CA2072901C - Power tool shield and guiding apparatus - Google Patents
Power tool shield and guiding apparatus Download PDFInfo
- Publication number
- CA2072901C CA2072901C CA002072901A CA2072901A CA2072901C CA 2072901 C CA2072901 C CA 2072901C CA 002072901 A CA002072901 A CA 002072901A CA 2072901 A CA2072901 A CA 2072901A CA 2072901 C CA2072901 C CA 2072901C
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- Canada
- Prior art keywords
- guiding apparatus
- compressing
- housing
- guiding
- attached
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000005291 magnetic effect Effects 0.000 claims description 15
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 239000000696 magnetic material Substances 0.000 claims description 2
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000005294 ferromagnetic effect Effects 0.000 description 3
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- OYFJQPXVCSSHAI-QFPUQLAESA-N enalapril maleate Chemical compound OC(=O)\C=C/C(O)=O.C([C@@H](C(=O)OCC)N[C@@H](C)C(=O)N1[C@@H](CCC1)C(O)=O)CC1=CC=CC=C1 OYFJQPXVCSSHAI-QFPUQLAESA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000001540 sodium lactate Substances 0.000 description 1
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Electrodes For Cathode-Ray Tubes (AREA)
Abstract
A power tool guiding and shielding apparatus that is magnetically attached to a work surface. The guide holds a work piece against a guide fence and the work table, allowing the work piece to slide on the work table while being machined. The shield is attached to the guide and the guide fence, which also holds the work piece to the work table.
Description
~~"~~:~~~.
~o~ER '.~'O~Ia ~I3~ELD STD fyUID~PT~ AP~~'UE
~ACx~~ottND s~~ ~~3~ xrtu~;t~~xc~ra Field of the xnvention lTechnical Field)o The present invention relates to a power tool shield and guiding apparatus.
1Q .
~ackoround Arty Stationary power tools normally have cutting and shaping blades protruding through a table top. These tools, for example, table saws, shapers, inverted routers, surface planers, and bandsaws, normally cut or shape a work piece or stock which the operator pushes directly at the protruding blade. ~tormally, a guide fence to one side of the table, and projecting vertically from the table, guides the work piece. xn addition to being pushed toward 2Q the blade, a work piece must also be pressed downwardly and laterally to maintain engagement with both the table top and the guide fence.
. 25 ~~ ~~i~~~
~o~ER '.~'O~Ia ~I3~ELD STD fyUID~PT~ AP~~'UE
~ACx~~ottND s~~ ~~3~ xrtu~;t~~xc~ra Field of the xnvention lTechnical Field)o The present invention relates to a power tool shield and guiding apparatus.
1Q .
~ackoround Arty Stationary power tools normally have cutting and shaping blades protruding through a table top. These tools, for example, table saws, shapers, inverted routers, surface planers, and bandsaws, normally cut or shape a work piece or stock which the operator pushes directly at the protruding blade. ~tormally, a guide fence to one side of the table, and projecting vertically from the table, guides the work piece. xn addition to being pushed toward 2Q the blade, a work piece must also be pressed downwardly and laterally to maintain engagement with both the table top and the guide fence.
. 25 ~~ ~~i~~~
Safety, of course, is the primary concern in the use of such devices. if the work piece binds against the back of the blade,~for example, °'kickback°° may occur, hurling the work piece towards the operator. also of great concern is the possibility of the operator directly cantacting the protruding blade, with possibly disastrous consequences.
Numerous safety devices have been proposed in the 1Q prior art. Hlade guards shield the operator from the blade; they frequently also are inconveniently located, inhibit visibility, and require accessary equipment to be fully effective. Hold-down devices force the stock snugly y against the table, thereby purportedly preventing ''kickback.°° Such devices may also be inconvenient, require accessory devices such as guards, and interfere with the use of push sticks and guards when cutting narrow work pieces. °°Tablesaw Safety nevices,°° by l2obinson (Fans Woodwork~.ng, March/~pril 1990, pp. ~4-88), discusses various prior art guards and hold-down devices.
t~.S. Patent No. 1,712,E325, to IClehm, entitled Saw Guard, discloses a cantilevered guard shielding a rotary blade. Rlehm, however, lacks disclosure regarding hold-down devices and is extremely expensive.
U. S. Patent No. 2,593,596, to Olson, entitled CIRCULAR SAW GUARD, likewise lacks a hold-down device, as well as lateral pressure against the fence. The guard must be removed during certain sawing operations such as dadoing, shaping, and narrow cuts. l4eaauring, positioning, and aligning the rip fence are difficult with this guard in position; ripping, particularly angled rip cuts, are also rendered difficult with the guard in position.
U. S. Patent No. 4,403,534, to Altendorf, et al., entitled I~VABLE PROTECTIVE HOOD FOR POWER TOOL OF A WORK
TOOL I~rCHINE discloses a guard with a vacuum hood which also lacks a hold-down device.
U. S. Patent No. 4,096,789, to 8lessinger, entitled SAW GUARD, likewise lacks hold-down devices, does not prevent "kickback," and provides neither vertical nor lateral pressure on the work piece.
Numerous safety devices have been proposed in the 1Q prior art. Hlade guards shield the operator from the blade; they frequently also are inconveniently located, inhibit visibility, and require accessary equipment to be fully effective. Hold-down devices force the stock snugly y against the table, thereby purportedly preventing ''kickback.°° Such devices may also be inconvenient, require accessory devices such as guards, and interfere with the use of push sticks and guards when cutting narrow work pieces. °°Tablesaw Safety nevices,°° by l2obinson (Fans Woodwork~.ng, March/~pril 1990, pp. ~4-88), discusses various prior art guards and hold-down devices.
t~.S. Patent No. 1,712,E325, to IClehm, entitled Saw Guard, discloses a cantilevered guard shielding a rotary blade. Rlehm, however, lacks disclosure regarding hold-down devices and is extremely expensive.
U. S. Patent No. 2,593,596, to Olson, entitled CIRCULAR SAW GUARD, likewise lacks a hold-down device, as well as lateral pressure against the fence. The guard must be removed during certain sawing operations such as dadoing, shaping, and narrow cuts. l4eaauring, positioning, and aligning the rip fence are difficult with this guard in position; ripping, particularly angled rip cuts, are also rendered difficult with the guard in position.
U. S. Patent No. 4,403,534, to Altendorf, et al., entitled I~VABLE PROTECTIVE HOOD FOR POWER TOOL OF A WORK
TOOL I~rCHINE discloses a guard with a vacuum hood which also lacks a hold-down device.
U. S. Patent No. 4,096,789, to 8lessinger, entitled SAW GUARD, likewise lacks hold-down devices, does not prevent "kickback," and provides neither vertical nor lateral pressure on the work piece.
SU1~RY OF THE INVENTION
According to the invention, there is provided a power tool shield guiding apparatus for use with a magnetically attractable surface, the apparatus comprising:
housing means;
a handle attached to said housing means having an opening extending therethrough;
magnetic holding means attached to said housing means for securing said housing means to a magnetically attractable surface;
a first compressing engagement means on said housing means for exerting a first compressing force and for guiding a work piece against a first work supporting member; and a second compressing engagement means on said housing means for exerting a second compressing force and for guiding the workpiece against a second work supporting member, the second compressing engagement means comprising a slidably insertable means received in the opening in the handle for adjusting the second compressing force, wherein said first compressing engageanent means exerts said first compressing force substantially perpendicular to the second compressing force of said second compressing engagemnent means, wherein the first compressing force is adjustable and the second compressing force is adjustable independently of the first compressing force.
According to the invention, there is provided a power tool shield guiding apparatus for use with a magnetically attractable surface, the apparatus comprising:
housing means;
a handle attached to said housing means having an opening extending therethrough;
magnetic holding means attached to said housing means for securing said housing means to a magnetically attractable surface;
a first compressing engagement means on said housing means for exerting a first compressing force and for guiding a work piece against a first work supporting member; and a second compressing engagement means on said housing means for exerting a second compressing force and for guiding the workpiece against a second work supporting member, the second compressing engagement means comprising a slidably insertable means received in the opening in the handle for adjusting the second compressing force, wherein said first compressing engageanent means exerts said first compressing force substantially perpendicular to the second compressing force of said second compressing engagemnent means, wherein the first compressing force is adjustable and the second compressing force is adjustable independently of the first compressing force.
5 In a preferred embodiment, the housing means is made of a non-magnetic material.
In a further preferred embodiment, the magnetic holding means comprises at least one permanent magnet.
Other objects, advantages and novel features, and further scope of applicability of the present invention will be set forth in part in the detailed description to follow, taken in conjunction with the accompanying drawings, and in part will become apparent to those skilled in the art upon examination of the following, or may be learned by practise of the invention. The objects and advantages of the invention.may be realised and attained by means of the instrum~entalities and combinations particularly pointed out in the appended claims.
In a further preferred embodiment, the magnetic holding means comprises at least one permanent magnet.
Other objects, advantages and novel features, and further scope of applicability of the present invention will be set forth in part in the detailed description to follow, taken in conjunction with the accompanying drawings, and in part will become apparent to those skilled in the art upon examination of the following, or may be learned by practise of the invention. The objects and advantages of the invention.may be realised and attained by means of the instrum~entalities and combinations particularly pointed out in the appended claims.
BRIEF DESCRIPTION OF THE DRAWINGS
The accompanying drawings, which are incorporated into and form a part of the specification, illustrate several embodiments of the present invention and, together with the description, serve to explain the principles of the invention. The drawings are only for the purpose of illustrating a preferred e~obodim~ent of the invention and are not to be construed as limiting the invention.
Figure. 1 is a perspective view of the preferred embodiment of the guiding apparatus:
Figure 2 is an alternative embodiment of the invention with a shield;
Figure 3 is yet another alternative embodiment of the guide, shield and pivoting handle;
~~'~FaM~~
Fig. 4 is a side view of the alternative embodiment of Fig. 3;
Fig. 5 is a perspective view of yet another alternative embodiment of the guide, shield with hold downs, and coupling device for the shield;
Fig. 6 is a front view of the guide in the alternative embodiment of Fig. 5;
Fig. '~ is a front view of the alternative embodiment of the invention of Fig. 5 with an electromagnet;
Fig. 8 is a top view of the alternative embodiment of the invention of Fig. 5 with a guide wheel with a leaf spring axle;
Fig. 9 is a front view of an alternative embodiment of the invention of Fig. 5 with springable bristles;
Fig. 10 is a front view of the alternative embodiment of the invention of Fig. ~ with a compressible guide wheel; and Fig. 11 is a side view of the preferred embodiment of the guideJshield.
o~~~~~u~..
DESCRIPTION OF TIE PREFERRED EMBODxMENTS
(BEST MODES FO1R CARRYING OUT ',PHE TNS)'ENTION) Fundamental to this invention are the problems of an easily adjusting power tool guiding apparatus, how to improve holding a work piece to a guide fence and work table, and shielding a person from debris and °'kickback°°
from the operation of a power tool.
This invention provides for a solution to these problems by a power tool guiding device which comprises a magnetic housing attached to a magnetic work table with bendable holding devices to hold a work piece in both a horizontal and vertical position. Additional hold-down is accomplished by the use of the guide/shield, which also protects the operator.
In the preferred embodiment, different bendable leaf spring devices are used for holding the work piece horizontally and vertically. Adjustment for different work pieces and for compression is easily performed by pressing the housing towards the work piece and sliding the L-shaped member that is inserted through an opening in the handle.
Reference is now made to the drawings which illustrate the preferred and alternative embodiments of the invention. Figs. 1 and 2 illustrate the preferred embodiment of the invention, which depicts a guarding apparatus ~40 comprising housing fl. Embedded within housing 61 are permanent magnets 60~a and ~nb. Handle 62 is attached to one end of housing Bendable "wings°' 65a and fSb are attached by screw 65 at an angle to "~l" cutouts ~Sa and ~~b on each side of the housing ~~. An L-shaped member 6~ having a long end 69 and a short leg 7~ is inserted into slot 63b at its long end X69. ~ihen inserted, the short leg 7~ is at an angle, as shown in Fig. ~. and bendable (for example made of polycarbonate or plastic material or the like). Member ~S~
can be adjusted to increase the holding compression by sliding long leg ~~ into slot 6~b. Slot ~3a can be used in a similar manner for wider work pieces.
A work piece l~ is placed on a magnetically attractable (for example ferromagnetic) work table 10 against guide fence l2, as shown in Fig. 2. Rousing 61 with embedded permanent magnets ~~a and 6~b is positioned on work table ~0, compressing bendable wing 6~a against work piece 14. In the configuration of Fig. 1, L-shaped bendable member ~~ is adjusted for the desired amount of compression by sliding long leg Cr9 of L-shaped member in or out of slot E~3b in handle ~2.
An alternative embodiment for the apparatus is shown in Fig. 2. riotor 72 and wheel 7f are used to compress work piece ~.~& to work table ~Ø One end S~ of shield 7~, attached by screws 7~, preferably of clear polycarbonate material or the like, is attached to motor 72, and other end a2 is attached to a side of housing 6~.. Magnetic housing apparatus cl in Fig. 2 is attached to ferromagnetic sheet 5~, which is attached to guide fence ~2. Bendable wing ~~a holds work piece ~.~ to work table ~,0, and L-shaped member 64 compresses work piece 1~
towards guide fence ~2.
Yet another alternative embodiment is shown in Fig.
3. Rotatable wheel a~ is attached to one end of axle 9~, and the other end attached to motor 72. Shield 74 is attached as shown to motor 72 and to the top of housing 61. In this embodiment, handle ~~ is attached to housing ~1 by handle axle 57, allowing handle 62 to pivot backwards, as shown in Fig. 4. When handle ~~ is pivoted, magnetic housing 61 is released from the magnetically attractable surface 10.
Fig. 4 also illustrates shield 7~ attached by screw 7~ to housing ~l and motor ~2.
Fig. 5 is yet another alternative embodiment of the apparatus. Magnets 38a and 38b are attached to ~0 ferromagnetic focusing caps 36a and 36b, which are attached to bottom of housing 30. Leaf spring guide blades 3~a and 3~b are attached to either side of housing 30. Exposed ends of the leaf spring guide blades 39 are angled as shown. In this embodiment, placement of magnetic housing 30 compresses work piece ~.~
in a horizontal direction and angled guide blade 3~
~'~~'~3~1, compresses work piece 1~ in a vertical direction.
Shield 20 is attached to housing 3A by threaded bolt a8.
other side of shield 20 is attached to guide fence 12 by a coupling device ~.5. Guide/shield 20 and coupling device 15 are shown in detail in Fig. 11. It illustrates how caupling device 15 is bendable 16 and how protruding end ~.7 locks into shield attachment hole 2~. Sendable hold down flaps 22 and 2~ are angled to compress work piece 1~. Guide/shield 20 is attached by bolts is and 18b to magnetic housing 30.
Fig. 6 is a front view of the magnetic guide of Fig. 5 illustrating housing 3~ with leaf spring guide blades 3~a and 3~b. Magnets 38a and 38b are attached to housing 30 by screws ~40a and ~Ob. Focusing caps 36a and 36b are attached t0 magnets 38a and 38b and are magnetically attached to work table l0.
Other alternative variations of the invention of Fig. 6 are shown in Fig. 7 wherein electromagnet 52, battery 5~, and switch 56 are disposed within housing 30.
Fig. 8 is a top view of an alternative embodiment of the invention of Fig. 6 with housing 30, attached leaf spring axle ~8, and mounted wheel ~e~.
Fig. 9 dF-picts another alternative embodiment of the apparatus using bristles ii as a hold--down device.
AV
a2 Fig. l0 shows yet another alternative embodimewt of the invention which has fixed axle ~~ with compressible guide wheel 44 mounted for compression hold-down.
Although. the invention has been described with reference to these preferred embodiments, other embodiments can achieve the same results. Variations and modificati~ns of the present invention will be obvious to those s3cilled in the art and it is intended to cover in the appended claims all such modifications and 5.0 equivalents. the entire disclosures of all applications, patents, and publications cited above, and of the corresponding application are hereby incarporated by reference.
The accompanying drawings, which are incorporated into and form a part of the specification, illustrate several embodiments of the present invention and, together with the description, serve to explain the principles of the invention. The drawings are only for the purpose of illustrating a preferred e~obodim~ent of the invention and are not to be construed as limiting the invention.
Figure. 1 is a perspective view of the preferred embodiment of the guiding apparatus:
Figure 2 is an alternative embodiment of the invention with a shield;
Figure 3 is yet another alternative embodiment of the guide, shield and pivoting handle;
~~'~FaM~~
Fig. 4 is a side view of the alternative embodiment of Fig. 3;
Fig. 5 is a perspective view of yet another alternative embodiment of the guide, shield with hold downs, and coupling device for the shield;
Fig. 6 is a front view of the guide in the alternative embodiment of Fig. 5;
Fig. '~ is a front view of the alternative embodiment of the invention of Fig. 5 with an electromagnet;
Fig. 8 is a top view of the alternative embodiment of the invention of Fig. 5 with a guide wheel with a leaf spring axle;
Fig. 9 is a front view of an alternative embodiment of the invention of Fig. 5 with springable bristles;
Fig. 10 is a front view of the alternative embodiment of the invention of Fig. ~ with a compressible guide wheel; and Fig. 11 is a side view of the preferred embodiment of the guideJshield.
o~~~~~u~..
DESCRIPTION OF TIE PREFERRED EMBODxMENTS
(BEST MODES FO1R CARRYING OUT ',PHE TNS)'ENTION) Fundamental to this invention are the problems of an easily adjusting power tool guiding apparatus, how to improve holding a work piece to a guide fence and work table, and shielding a person from debris and °'kickback°°
from the operation of a power tool.
This invention provides for a solution to these problems by a power tool guiding device which comprises a magnetic housing attached to a magnetic work table with bendable holding devices to hold a work piece in both a horizontal and vertical position. Additional hold-down is accomplished by the use of the guide/shield, which also protects the operator.
In the preferred embodiment, different bendable leaf spring devices are used for holding the work piece horizontally and vertically. Adjustment for different work pieces and for compression is easily performed by pressing the housing towards the work piece and sliding the L-shaped member that is inserted through an opening in the handle.
Reference is now made to the drawings which illustrate the preferred and alternative embodiments of the invention. Figs. 1 and 2 illustrate the preferred embodiment of the invention, which depicts a guarding apparatus ~40 comprising housing fl. Embedded within housing 61 are permanent magnets 60~a and ~nb. Handle 62 is attached to one end of housing Bendable "wings°' 65a and fSb are attached by screw 65 at an angle to "~l" cutouts ~Sa and ~~b on each side of the housing ~~. An L-shaped member 6~ having a long end 69 and a short leg 7~ is inserted into slot 63b at its long end X69. ~ihen inserted, the short leg 7~ is at an angle, as shown in Fig. ~. and bendable (for example made of polycarbonate or plastic material or the like). Member ~S~
can be adjusted to increase the holding compression by sliding long leg ~~ into slot 6~b. Slot ~3a can be used in a similar manner for wider work pieces.
A work piece l~ is placed on a magnetically attractable (for example ferromagnetic) work table 10 against guide fence l2, as shown in Fig. 2. Rousing 61 with embedded permanent magnets ~~a and 6~b is positioned on work table ~0, compressing bendable wing 6~a against work piece 14. In the configuration of Fig. 1, L-shaped bendable member ~~ is adjusted for the desired amount of compression by sliding long leg Cr9 of L-shaped member in or out of slot E~3b in handle ~2.
An alternative embodiment for the apparatus is shown in Fig. 2. riotor 72 and wheel 7f are used to compress work piece ~.~& to work table ~Ø One end S~ of shield 7~, attached by screws 7~, preferably of clear polycarbonate material or the like, is attached to motor 72, and other end a2 is attached to a side of housing 6~.. Magnetic housing apparatus cl in Fig. 2 is attached to ferromagnetic sheet 5~, which is attached to guide fence ~2. Bendable wing ~~a holds work piece ~.~ to work table ~,0, and L-shaped member 64 compresses work piece 1~
towards guide fence ~2.
Yet another alternative embodiment is shown in Fig.
3. Rotatable wheel a~ is attached to one end of axle 9~, and the other end attached to motor 72. Shield 74 is attached as shown to motor 72 and to the top of housing 61. In this embodiment, handle ~~ is attached to housing ~1 by handle axle 57, allowing handle 62 to pivot backwards, as shown in Fig. 4. When handle ~~ is pivoted, magnetic housing 61 is released from the magnetically attractable surface 10.
Fig. 4 also illustrates shield 7~ attached by screw 7~ to housing ~l and motor ~2.
Fig. 5 is yet another alternative embodiment of the apparatus. Magnets 38a and 38b are attached to ~0 ferromagnetic focusing caps 36a and 36b, which are attached to bottom of housing 30. Leaf spring guide blades 3~a and 3~b are attached to either side of housing 30. Exposed ends of the leaf spring guide blades 39 are angled as shown. In this embodiment, placement of magnetic housing 30 compresses work piece ~.~
in a horizontal direction and angled guide blade 3~
~'~~'~3~1, compresses work piece 1~ in a vertical direction.
Shield 20 is attached to housing 3A by threaded bolt a8.
other side of shield 20 is attached to guide fence 12 by a coupling device ~.5. Guide/shield 20 and coupling device 15 are shown in detail in Fig. 11. It illustrates how caupling device 15 is bendable 16 and how protruding end ~.7 locks into shield attachment hole 2~. Sendable hold down flaps 22 and 2~ are angled to compress work piece 1~. Guide/shield 20 is attached by bolts is and 18b to magnetic housing 30.
Fig. 6 is a front view of the magnetic guide of Fig. 5 illustrating housing 3~ with leaf spring guide blades 3~a and 3~b. Magnets 38a and 38b are attached to housing 30 by screws ~40a and ~Ob. Focusing caps 36a and 36b are attached t0 magnets 38a and 38b and are magnetically attached to work table l0.
Other alternative variations of the invention of Fig. 6 are shown in Fig. 7 wherein electromagnet 52, battery 5~, and switch 56 are disposed within housing 30.
Fig. 8 is a top view of an alternative embodiment of the invention of Fig. 6 with housing 30, attached leaf spring axle ~8, and mounted wheel ~e~.
Fig. 9 dF-picts another alternative embodiment of the apparatus using bristles ii as a hold--down device.
AV
a2 Fig. l0 shows yet another alternative embodimewt of the invention which has fixed axle ~~ with compressible guide wheel 44 mounted for compression hold-down.
Although. the invention has been described with reference to these preferred embodiments, other embodiments can achieve the same results. Variations and modificati~ns of the present invention will be obvious to those s3cilled in the art and it is intended to cover in the appended claims all such modifications and 5.0 equivalents. the entire disclosures of all applications, patents, and publications cited above, and of the corresponding application are hereby incarporated by reference.
Claims (19)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A power tool shield guiding apparatus for use with a magnetically attractable surface, the apparatus comprising:
housing means;
a handle attached to said housing means having an opening extending therethrough;
magnetic holding means attached to said housing means for securing said housing means to a magnetically attractable surface;
a first compressing engagement means on said housing means for exerting a first compressing force and for guiding a work piece against a first work supporting member; and a second compressing engagement means on said housing means for exerting a second compressing force and for guiding the workpiece against a second work supporting member, the second compressing engagement means comprising a slidably insertable means received in the opening in the handle for adjusting the second compressing force, wherein said first compressing engagement means exerts said first compressing force substantially perpendicular to the second compressing force of said second compressing engagement means, wherein the first compressing force is adjustable and the second compressing force is adjustable independently of the first compressing force.
housing means;
a handle attached to said housing means having an opening extending therethrough;
magnetic holding means attached to said housing means for securing said housing means to a magnetically attractable surface;
a first compressing engagement means on said housing means for exerting a first compressing force and for guiding a work piece against a first work supporting member; and a second compressing engagement means on said housing means for exerting a second compressing force and for guiding the workpiece against a second work supporting member, the second compressing engagement means comprising a slidably insertable means received in the opening in the handle for adjusting the second compressing force, wherein said first compressing engagement means exerts said first compressing force substantially perpendicular to the second compressing force of said second compressing engagement means, wherein the first compressing force is adjustable and the second compressing force is adjustable independently of the first compressing force.
2. The guiding apparatus of claim 1 wherein said housing means is made of a non-magnetic material.
3. The guiding apparatus of claim 1 wherein said magnetic holding means comprises at least one permanent magnet.
4. The guiding apparatus of claim 1 wherein said magnetic holding means comprises magnetic circuit means.
5. The guiding apparatus of claim 4 wherein said magnetic circuit means comprises electromagnet means, voltage source means, and switching means.
6. The guiding apparatus of claim 1 wherein said magnetic holding means is attached to said housing means by embedding it in said housing means.
7. The guiding apparatus of claim 1 wherein at least one of said compressing engagement means comprises leaf spring means.
8. The guiding apparatus of claim 7 wherein said leaf spring means comprises an angled end.
9. The guiding apparatus of claim 7 wherein said leaf spring means comprises bendable material.
10. The guiding apparatus of claim 1 wherein at least one of said compressing engagement means comprise a plurality of flexible strips.
11. The guiding apparatus of claim 1 wherein said first compressing engagement means comprises a rotating wheel means.
12. The guiding apparatus of claim 11 Wherein said rotating wheel means is attached to compression spring means.
13. The guiding apparatus of claim 11 wherein said rotating wheel means is made of compressible deformable material.
14. The guiding apparatus of claim 1 wherein said handle is pivotally attached to said housing means for removably securing said housing means to the magnetically attractable surface.
15. The guiding apparatus of claim 1 wherein said first compressing engagement means is attached to a side of said housing means.
16. The guiding apparatus of claim 1 wherein said first compressing engagement means comprises bendable wings protruding from either side of said housing means.
17. The guiding apparatus of claim 1 wherein said slidably insertable means comprises the L-shaped bendable member insertable through an opening in said handle.
18. The guiding apparatus of claim 1 wherein said apparatus further comprises guide shield means.
19. The guiding apparatus of claim 18 wherein said guide shield means further comprises a third compressing engagement means for guiding the work piece against the second work support member.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US72539991A | 1991-07-01 | 1991-07-01 | |
| US07/725,399 | 1991-07-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2072901A1 CA2072901A1 (en) | 1993-01-02 |
| CA2072901C true CA2072901C (en) | 2002-10-01 |
Family
ID=24914398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002072901A Expired - Lifetime CA2072901C (en) | 1991-07-01 | 1992-07-02 | Power tool shield and guiding apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2072901C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2133016B1 (en) * | 1995-02-22 | 2000-03-16 | Esteban Jose Maria Arroyo | GUIDED COVERING PLATES APPLICABLE TO WOOD PIECES MACHINING MACHINES. |
-
1992
- 1992-07-02 CA CA002072901A patent/CA2072901C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2072901A1 (en) | 1993-01-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed | ||
| MKEC | Expiry (correction) | ||
| MKEC | Expiry (correction) |
Effective date: 20121202 |