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US3297076A - Adjustable window grille with collapsible guard bars - Google Patents

Adjustable window grille with collapsible guard bars Download PDF

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Publication number
US3297076A
US3297076A US400415A US40041564A US3297076A US 3297076 A US3297076 A US 3297076A US 400415 A US400415 A US 400415A US 40041564 A US40041564 A US 40041564A US 3297076 A US3297076 A US 3297076A
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Prior art keywords
grille
links
stiles
pivotally connected
rivets
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Expired - Lifetime
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US400415A
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Udin Albert
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ALBERT UDIN Inc
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ALBERT UDIN Inc
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    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/06—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type
    • E06B9/0607—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type comprising a plurality of similar rigid closing elements movable to a storage position
    • E06B9/0615—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type comprising a plurality of similar rigid closing elements movable to a storage position characterised by the closing elements
    • E06B9/0623—Grilles
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/06—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type
    • E06B9/0607—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type comprising a plurality of similar rigid closing elements movable to a storage position
    • E06B9/0646—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type comprising a plurality of similar rigid closing elements movable to a storage position characterised by the relative arrangement of the closing elements in the stored position
    • E06B9/0653—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type comprising a plurality of similar rigid closing elements movable to a storage position characterised by the relative arrangement of the closing elements in the stored position stored side by side in the closing plane
    • E06B9/0661—Lazy tongue, pantograph or scissor-like systems in the plane of the opening

Definitions

  • This invention relates to adjustable grilles for serving as guards in connection with rear openings in trucks, doors, windows and similar openings, particularly wherein said grille is adjustable within limits to the length thereof.
  • the primary object of the present invention is to economically produce a grille of this kind which is adjustable while having qualities present in a fixed grille, such as vertical bars mounted in conjunction with the grille structure.
  • a further object is to provide a grille of this kind with means to prevent tampering with the movable grille members at the top and bottom thereof.
  • Another object is to provide a collapsible grille construction of the lazy tong type which is readily extensible and collapsible and when collapsed may be positioned in a space greatly reduced from the space originally occupied when extended so that the collapsed grille may be compactly positioned immediately adjacent the side of the opening in a relatively unobstructive, obscure manner.
  • FIG. l is a top plan view of a grille embodying one form of the invention in extended position.
  • FIG. 2 is a similar view of the grille in collapsed condition.
  • FIG. 3 is an enlarged fragmentary perspective front view of the bottom end of the grille, parts being shown broken away.
  • FIG. 4 is a vertical sectional view taken on the line 4 4 of FIG. 3, parts being broken away.
  • FIG. 5 is an enlarged horizontal sectional view taken on the line 5 5 of FIG. l.
  • FIG. 6 is a similar view taken on the line 6 6 of FIG. 1.
  • FIG. 7 is a top plan view of a grille embodying a modied form of the invention.
  • FIG. 8 is a similar View of the grille in collapsed condition.
  • FIG. 9 is a vertical sectional View taken on the plane of the line 9 9 0f FIG. 7.
  • FIG. 10 is a sectional view taken on the plane of the line 1(1 10 of FIG. 7.
  • FIG. 11 is a cross-sectional View taken on the plane of the line 11 11 of FIG. 7.
  • FIG. 12 is a cross-sectional view taken on the plane of the line 12-12 of FIG. 7.
  • FIG. 13 is an enlarged fragmentary perspective view of a top corner of the grille in extended position.
  • FIG. 14 is an enlarged fragmentary perspective view of the bottom end of the grille, in extended position.
  • FIG. 1 there is shown an adjustable grille embodying the invention and designated generally at 10.
  • the grille comprises a rectangular shaped framework including side frame members in the form of vertical stiles 12 and 14 and top and bottom end pivotal frame members in the form of pairs of flat metal link bars 16, 16 and 18, 1S pivotally connected at one end to the stiles 12 and 14, by means of pivot pins 2t), the other ends of the bar links 16 and 18 being overlapped with the overlapped ends pivotally connected by pivot pins 22.
  • Each stile 12 and 14 preferably comprises a pair of uprights 24, 24 of channel formation which have their side flanges directed towards each other.
  • the uprights 24 are held together by rivets 26 and are maintained in spaced relation by spacer sleeves 28 through which the rivets extend.
  • each upright 32 is formed integrally with a short bar portion 3S closely spaced from the body of the upright and extending from a point adjacent the ends of the upright to a point inwardly thereof and being turned inwardly at the top and bottom thereof, each bar portion 38 and body of the upright constituting a trackway 4@ for guiding the sliding movement of the overlapped ends of the bar links 16 and 13.
  • a horizontal extensible unit indicated generally at 42 is interposed between the side stiles 12 and 14 and extends through the central stile assembly Sil.
  • the unit cornprises a linkage formed from a plurality of angularly disposed links 44, each link consisting of a channel-shaped bar.
  • the links crisscross each other as illustrated and are pivotally connected by rivets 46 at spaced intervals therealong intermediate their ends, such pivotal connections extending in horizontal lines intermediate the top and bottom ends of the stiles 12, 14 and 311.
  • the adjacent top and bottom ends of the links 44 are pivotally connected together by rivets 48 and Sil, respectively, so that a straight line linkage results.
  • While one end of the links 44 is pivotally connected to the adjacent end of the other link of a pair, by means of the rivets 43 and 50, the free ends of the links 44 projecting laterally into the side stiles 12 and 14 are pivotally connected to the web portions of the uprights 24 of the stiles by the rivets 26.
  • the grille 10 may be adjustedhorizon tally within limits by pushing the side stiles 12 and 14 toward and away from each other.
  • the center stile assembly 30 remains in a fixed position while the links 44 are caused to slide and pivot on the pivot pins 46 whereupon the overlapped ends of the bars 16 and 18 ride upwardly along the trackway provided in part by the bar portions 38, 38.
  • the links 44 vary their angular relation to each other accordingly. The reverse action takes place upon widening the grille by pushing the side stiles 12 and 14 away from each other.
  • this form of grille 10 comprises a rectangular shaped framework including side frame members in the form of vertical stiles 12 and 14 and top and bottom end pivotal frame members in the form of pairs of opposed articulated bar links 16', 16', and 18', 18.
  • the bar links 16', 16 are pivotally connected end to end by pivot pins 17 and are connected to Jthe side stile 12 by a pivot pin Ztl' and to the central stile assembly by a pivot pin 34'.
  • the bar links 18', 18' are pivotally connected end to end by pivot pins 19 and are pivotally connected to the side stile 14' by pivot pins 20' and to the central stile assembly 30' by a pivot pin 34'.
  • the bar links connected to the stile assembly are in overlapped relation.
  • Each stile 12' and 14' preferably comprises a pair of uprights 24', 24' of channel formation which have their side flanges directed towards each other.
  • the uprights 24' are held together by rivets 26 and are maintained in spaced relation by spacer sleeves similar to sleeves 28 through which the rivets extend.
  • a central stile assembly 30' which comprises a pair of opposed uprights 32', 32 of channel formation which have their side flanges directed towards each other.
  • the uprights 32' are held together by rivets V34' and are maintained in spaced relation by spacer sleeves 36' through which the rivets extend.
  • the bodies of the uprights 32', 32 constitute a trackway 40' for guiding the sliding movement of the overlapped ends of the bar links 16', 16', 18', 18'.
  • a horizontal extensible unit indicated generally at 42' is interposed between the side stiles 12' and 14' and extends through the central stile assembly 30'.
  • the unit comprises a linkage formed from a plurality of angularly disposed links 44', each link consisting of a channelshaped bar.
  • the links crisscross each other as illustrated and are pivotally connected by rivets 46' at spaced intervals therealong intermediate their ends, such pivotal connections extending in horizontal lines intermediate the top and bottom ends of the stiles 12', 14' and stile assembly 30'.
  • the adjacent top and bottom ends of the links 44' are pivotally connected together by rivets 48' and 50', respectively, so that a straight line linkage results.
  • bottom overlapped ends and top overlapped ends are normally disposed between the bar links 16', 16', 18', 18' when the grille is in extended position as shown in FIG. 7. This arrangement prevents tampering with, bending or otherwise damaging the grille members at the top and bottom thereof.
  • While one end of the links 44' is pivotally connected to the adjacent end of the other link of a pair, by means of the rivets 48' and 50', the free overlapping ends of the links 44 projecting laterally into the side stiles 12' and 14' are pivotally connected to each other by rivets 52.
  • the grille may be adjusted horizontally within limits by pushing the side stiles 12' and 14' ltoward and away from each other.
  • the central stile assembly 30' remains in a fixed position while the links 44' are caused to slide and pivot on the pivot pins 46' whereupon the overlapped ends of the bar links, 16', 16', and 18', 18' ride upwardly and downwardly across the links 44' while the overlapped ends of bar links 16' and 18' connected to central stile assembly 30 are immovable and fixed.
  • the links 44' vary their angular relation to each other accordingly. The reverse action takes place upon widening the grille by pushing the side stiles 12 and 14' away from each other.
  • a grille of the character described comprising a spaced pair of vertically disposed side stiles and a central intermediate stile assembly, each of said side stiles and stile assembly comprising a pair of spaced opposed channel irons connected together at the lower and top ends thereof, with the side flanges thereof extending inwardly toward each other, by pivot pins which extend through space sleeves interposed between opposed channel irons; a

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Securing Of Glass Panes Or The Like (AREA)

Description

Jan. 10, 1967 A, um 3,297,076
ADJUSTABLE WINDOW GRILLE WITH COLLAPSIBLE GUARD BARS Filed Sept. 30, 19,64 4 Sheets-Sheet 2 INVENTOR.
j 7TRN5,
Jan.v 10, 1967 v A, UDlN 3,297,076
ADJUSTABLE WINDOW GRILLE WITH COLLAPSIDLE GUARD BARS Filed sept. 50, 1964 4 sheets-sheet A l T 9-5. E19-Jil 34, JNVENTOR.
United States Patent Oiiice 3297,@75 Patented dan. 10, 1967 3,297,07 6 ADJUSTABLE WINDOW GRILLE Wl'llH CLLAPSIBLE GUARD BARS Albert Udin, Albert Udin, Inc., 4236 Park Ave., Bronx, NX. 10457 Filed Sept. 30, 1964, Ser. No. 400,415 1 Claim. (Cl. 16th-161) This invention relates to adjustable grilles for serving as guards in connection with rear openings in trucks, doors, windows and similar openings, particularly wherein said grille is adjustable within limits to the length thereof.
The primary object of the present invention is to economically produce a grille of this kind which is adjustable while having qualities present in a fixed grille, such as vertical bars mounted in conjunction with the grille structure.
A further object is to provide a grille of this kind with means to prevent tampering with the movable grille members at the top and bottom thereof.
Another object is to provide a collapsible grille construction of the lazy tong type which is readily extensible and collapsible and when collapsed may be positioned in a space greatly reduced from the space originally occupied when extended so that the collapsed grille may be compactly positioned immediately adjacent the side of the opening in a relatively unobstructive, obscure manner.
For further comprehension of the invention and of the objects and advantages thereof, reference will be had to the following description and accompanying drawings, and to the appended claim in which the various novel features of the invention are more particularly set forth.
In the accompanying drawings forming a material part of this disclosure:
FIG. l is a top plan view of a grille embodying one form of the invention in extended position.
FIG. 2 is a similar view of the grille in collapsed condition.
FIG. 3 is an enlarged fragmentary perspective front view of the bottom end of the grille, parts being shown broken away.
FIG. 4 is a vertical sectional view taken on the line 4 4 of FIG. 3, parts being broken away.
FIG. 5 is an enlarged horizontal sectional view taken on the line 5 5 of FIG. l.
FIG. 6 is a similar view taken on the line 6 6 of FIG. 1.
FIG. 7 is a top plan view of a grille embodying a modied form of the invention.
FIG. 8 is a similar View of the grille in collapsed condition.
FIG. 9 is a vertical sectional View taken on the plane of the line 9 9 0f FIG. 7.
FIG. 10 is a sectional view taken on the plane of the line 1(1 10 of FIG. 7.
FIG. 11 is a cross-sectional View taken on the plane of the line 11 11 of FIG. 7.
FIG. 12 is a cross-sectional view taken on the plane of the line 12-12 of FIG. 7.
FIG. 13 is an enlarged fragmentary perspective view of a top corner of the grille in extended position.
FIG. 14 is an enlarged fragmentary perspective view of the bottom end of the grille, in extended position.
Referring now in detail to the various views of the drawings wherein similar parts are indicated by similar reference numerals, in FIG. 1 there is shown an adjustable grille embodying the invention and designated generally at 10. The grille comprises a rectangular shaped framework including side frame members in the form of vertical stiles 12 and 14 and top and bottom end pivotal frame members in the form of pairs of flat metal link bars 16, 16 and 18, 1S pivotally connected at one end to the stiles 12 and 14, by means of pivot pins 2t), the other ends of the bar links 16 and 18 being overlapped with the overlapped ends pivotally connected by pivot pins 22.
Each stile 12 and 14 preferably comprises a pair of uprights 24, 24 of channel formation which have their side flanges directed towards each other. The uprights 24 are held together by rivets 26 and are maintained in spaced relation by spacer sleeves 28 through which the rivets extend.
Midway in the space between the side stiles 12 and 14, there is a central stile assembly 311 which comprises a pair of opposed uprights 32, 32 of channel formation which have their side flanges directed towards each other. The uprights 32 are held together by rivets 34 and are maintained in spaced relation by spacer sleeves 36 through which the rivets extend. At both the top and bottom ends, each upright 32 is formed integrally with a short bar portion 3S closely spaced from the body of the upright and extending from a point adjacent the ends of the upright to a point inwardly thereof and being turned inwardly at the top and bottom thereof, each bar portion 38 and body of the upright constituting a trackway 4@ for guiding the sliding movement of the overlapped ends of the bar links 16 and 13.
A horizontal extensible unit indicated generally at 42 is interposed between the side stiles 12 and 14 and extends through the central stile assembly Sil. The unit cornprises a linkage formed from a plurality of angularly disposed links 44, each link consisting of a channel-shaped bar. The links crisscross each other as illustrated and are pivotally connected by rivets 46 at spaced intervals therealong intermediate their ends, such pivotal connections extending in horizontal lines intermediate the top and bottom ends of the stiles 12, 14 and 311. The adjacent top and bottom ends of the links 44 are pivotally connected together by rivets 48 and Sil, respectively, so that a straight line linkage results.
It will be noted that the bottom overlapped ends and some of the ends at the top are normally disposed between the bar links 16, 16, 18, 18 when the grille is in extended position as shown in FIG. 1. This arrangement prevents tampering with, bending or otherwise damaging the grille members at the bottom thereof.
While one end of the links 44 is pivotally connected to the adjacent end of the other link of a pair, by means of the rivets 43 and 50, the free ends of the links 44 projecting laterally into the side stiles 12 and 14 are pivotally connected to the web portions of the uprights 24 of the stiles by the rivets 26.
In operation, the grille 10 may be adjustedhorizon tally within limits by pushing the side stiles 12 and 14 toward and away from each other. When they are pushed toward each other, the center stile assembly 30 remains in a fixed position while the links 44 are caused to slide and pivot on the pivot pins 46 whereupon the overlapped ends of the bars 16 and 18 ride upwardly along the trackway provided in part by the bar portions 38, 38. The links 44 vary their angular relation to each other accordingly. The reverse action takes place upon widening the grille by pushing the side stiles 12 and 14 away from each other.
Referring now to the modification of the invention shown in FIGS. 7 to 14, inclusive, this form of grille 10 comprises a rectangular shaped framework including side frame members in the form of vertical stiles 12 and 14 and top and bottom end pivotal frame members in the form of pairs of opposed articulated bar links 16', 16', and 18', 18. The bar links 16', 16 are pivotally connected end to end by pivot pins 17 and are connected to Jthe side stile 12 by a pivot pin Ztl' and to the central stile assembly by a pivot pin 34'. The bar links 18', 18' are pivotally connected end to end by pivot pins 19 and are pivotally connected to the side stile 14' by pivot pins 20' and to the central stile assembly 30' by a pivot pin 34'. The bar links connected to the stile assembly are in overlapped relation.
Each stile 12' and 14' preferably comprises a pair of uprights 24', 24' of channel formation which have their side flanges directed towards each other. The uprights 24' are held together by rivets 26 and are maintained in spaced relation by spacer sleeves similar to sleeves 28 through which the rivets extend.
Midway in the space between the side stiles 12 and 14' there is a central stile assembly 30' which comprises a pair of opposed uprights 32', 32 of channel formation which have their side flanges directed towards each other. The uprights 32' are held together by rivets V34' and are maintained in spaced relation by spacer sleeves 36' through which the rivets extend. The bodies of the uprights 32', 32 constitute a trackway 40' for guiding the sliding movement of the overlapped ends of the bar links 16', 16', 18', 18'.
A horizontal extensible unit indicated generally at 42' is interposed between the side stiles 12' and 14' and extends through the central stile assembly 30'. The unit comprises a linkage formed from a plurality of angularly disposed links 44', each link consisting of a channelshaped bar. The links crisscross each other as illustrated and are pivotally connected by rivets 46' at spaced intervals therealong intermediate their ends, such pivotal connections extending in horizontal lines intermediate the top and bottom ends of the stiles 12', 14' and stile assembly 30'. The adjacent top and bottom ends of the links 44' are pivotally connected together by rivets 48' and 50', respectively, so that a straight line linkage results.
It will be noted that the bottom overlapped ends and top overlapped ends are normally disposed between the bar links 16', 16', 18', 18' when the grille is in extended position as shown in FIG. 7. This arrangement prevents tampering with, bending or otherwise damaging the grille members at the top and bottom thereof.
While one end of the links 44' is pivotally connected to the adjacent end of the other link of a pair, by means of the rivets 48' and 50', the free overlapping ends of the links 44 projecting laterally into the side stiles 12' and 14' are pivotally connected to each other by rivets 52.
In operation, the grille may be adjusted horizontally within limits by pushing the side stiles 12' and 14' ltoward and away from each other. When they are pushed toward each other, the central stile assembly 30' remains in a fixed position while the links 44' are caused to slide and pivot on the pivot pins 46' whereupon the overlapped ends of the bar links, 16', 16', and 18', 18' ride upwardly and downwardly across the links 44' while the overlapped ends of bar links 16' and 18' connected to central stile assembly 30 are immovable and fixed. The links 44' vary their angular relation to each other accordingly. The reverse action takes place upon widening the grille by pushing the side stiles 12 and 14' away from each other.
While I have illustrated and described the preferred embodiments of my invention, it is to be understood that I do not limit myself to the precise constructions herein disclosed and that various changes and modifications may 4 be made Within the scope of the invention as defined in the appended claim.
What is claimed is:
A grille of the character described comprising a spaced pair of vertically disposed side stiles and a central intermediate stile assembly, each of said side stiles and stile assembly comprising a pair of spaced opposed channel irons connected together at the lower and top ends thereof, with the side flanges thereof extending inwardly toward each other, by pivot pins which extend through space sleeves interposed between opposed channel irons; a |lazy-tong lgrille work composed of a plurality of angularly disposed channel-shaped links arranged back to back with the flanges thereof presented outwardly and pivotally riveted together at their points of crossing and at the upper and lower ends thereof; said grille Work extending between said side stiles through said central stile assembly and pivotally connected to each of said side stiles and central stile assembly; front pairs of longitudinally disposed straight flat bottom and top sectional bar links, one section of each of said bottom and top sectional bar links having one end thereof pivotally connected to the forward surface of one of said side Stiles at the lower and upper ends thereof, respectively, by the pivot pins by which the lower and upper ends of the channel irons of the said one of said side stiles are connected together, the other section of each of said bottom and top sectional bar links having one end thereof pivotally connected to the forward surface of said central stile assembly at the lower and upper ends thereof, respectively, by the pivot pins by which the lower and upper ends of the irons of the central stile assembly are connected together, the other end of said bottom and top sectional bar links being connected to the free end of said one section of the bottom and top sectional bar links, the other bottom sectional bar link and top sectional bar link of said front pair of bottom sectional bar links and top sectional bar links having one end thereof pivotally connected to the forward surface of the other of said side stiles at the lower and upper ends thereof by the said pivot pins by which the lower and top ends of the channel irons of the said other of said side stiles are connected together; a rear pair of longitudinally disposed bottom and top sectional bar links which are similarly pivotally connected to the rearward surface of the said side stiles, in transversely spaced relation to said front pairs of bottom and top sectional bar links, said top sectional bar links are all inclined slightly downwardly from their pivotal connections with said side stiles and central stile assembly; the lower and upper pivotally connected ends of the channel-shaped links of said grille work being normally disposed within the space between the said front and rear pairs of bottom sectional bar links and top sectional bar links, respectively, whereby access to said channel links is prevented.
References Cited by the Examiner UNITED STATES PATENTS 312,380 2/1885 Pitt 160-159 X 351,084 10/1886 Wilson 160-163 X 949,739 2/1910 Bataille 160-163 X HARRISON R. MOSELEY, Primary Examiner. P. M. CAUN, Assistant Examiner.
US400415A 1964-09-30 1964-09-30 Adjustable window grille with collapsible guard bars Expired - Lifetime US3297076A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3358741A (en) * 1966-02-24 1967-12-19 Udin Albert Adjustable window grille
JPS49134037U (en) * 1973-03-09 1974-11-18
US20120073203A1 (en) * 2010-09-29 2012-03-29 Peter Fasnacht Sliding door for an elevator installation
US20120073204A1 (en) * 2010-09-29 2012-03-29 Bjarne Lindberg Sliding door for an elevator installation
US10472883B2 (en) 2016-05-31 2019-11-12 Peter Zwierzykowski Articulating expandable barrier
US20190390510A1 (en) * 2016-01-21 2019-12-26 Stackdoor B.V. Collapsible security grill, grille system, bar, and method
US20210047846A1 (en) * 2018-04-20 2021-02-18 Deltak Manufacturing, Inc. Scaffold Gate Toeboard Assembly for Use on a Scaffold Gate
US20220251790A1 (en) * 2021-02-05 2022-08-11 Peter Zwierzykowski Articulating expandable barrier

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US312380A (en) * 1885-02-17 William e
US351084A (en) * 1886-10-19 Folding gate
US949739A (en) * 1910-02-15 Bataille & Co A Folding gate.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US312380A (en) * 1885-02-17 William e
US351084A (en) * 1886-10-19 Folding gate
US949739A (en) * 1910-02-15 Bataille & Co A Folding gate.

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3358741A (en) * 1966-02-24 1967-12-19 Udin Albert Adjustable window grille
JPS49134037U (en) * 1973-03-09 1974-11-18
JPS5329001Y2 (en) * 1973-03-09 1978-07-20
US20120073203A1 (en) * 2010-09-29 2012-03-29 Peter Fasnacht Sliding door for an elevator installation
US20120073204A1 (en) * 2010-09-29 2012-03-29 Bjarne Lindberg Sliding door for an elevator installation
US20190390510A1 (en) * 2016-01-21 2019-12-26 Stackdoor B.V. Collapsible security grill, grille system, bar, and method
US10988977B2 (en) * 2016-01-21 2021-04-27 Stackdoor B.V. Collapsible security grille, grille system, bar, and method
US10472883B2 (en) 2016-05-31 2019-11-12 Peter Zwierzykowski Articulating expandable barrier
US10920485B2 (en) 2016-05-31 2021-02-16 Peter Zwierzykowski Articulating expandable barrier
US20210047846A1 (en) * 2018-04-20 2021-02-18 Deltak Manufacturing, Inc. Scaffold Gate Toeboard Assembly for Use on a Scaffold Gate
US11761217B2 (en) * 2018-04-20 2023-09-19 Deltak Manufacturing, Inc. Scaffold gate toeboard assembly for use on a scaffold gate
US20220251790A1 (en) * 2021-02-05 2022-08-11 Peter Zwierzykowski Articulating expandable barrier

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