EP0132458B1 - Gas spring with safety device - Google Patents
Gas spring with safety device Download PDFInfo
- Publication number
- EP0132458B1 EP0132458B1 EP83109832A EP83109832A EP0132458B1 EP 0132458 B1 EP0132458 B1 EP 0132458B1 EP 83109832 A EP83109832 A EP 83109832A EP 83109832 A EP83109832 A EP 83109832A EP 0132458 B1 EP0132458 B1 EP 0132458B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure spring
- outer tube
- gas
- annular body
- adjusting lever
- 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
Links
- 230000007704 transition Effects 0.000 claims abstract description 10
- 230000037431 insertion Effects 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 3
- 238000007373 indentation Methods 0.000 claims description 2
- 230000008602 contraction Effects 0.000 claims 1
- 238000005452 bending Methods 0.000 description 2
- 238000005422 blasting Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
- A47C3/20—Chairs or stools with vertically-adjustable seats
- A47C3/30—Chairs or stools with vertically-adjustable seats with vertically-acting fluid cylinder
Definitions
- the invention relates to a gas pressure spring with a safety device, in particular for use in chairs, the safety device consisting of an openable ring body which encloses an outer tube of the gas pressure spring, the outer tube being drawn in at one end and a piston rod emerging at the other end, and in that the outer tube has a lateral insertion opening for an adjusting lever.
- Gas springs are u. a. used to a greater extent in office chairs as suspension elements and seat adjustment elements.
- the outer tube from the seat support of the chair is also exposed to stronger alternating bending loads, which in exceptional cases have already caused the outer tube to break and accidents due to a closure piece shooting out of the outer tube of the gas pressure spring.
- the risk of the closure piece shooting out of the outer tube is reduced by the fact that the outer tube is retracted at its one open end.
- the invention is based on the object of providing a gas pressure spring with a safety device which reduces the risk of an outer tube breakage and even if the outer tube is torn open, the end portion of the outer tube of the gas pressure spring springs off and thus a possible shooting out of the closure piece, which is under high gas pressure the outer tube with certainty prevented.
- the object is achieved in a gas pressure spring with the features mentioned in the present invention in that the ring body consisting of at least two releasably connected parts is clamped onto the outer tube of the gas pressure spring in the area of the lateral insertion opening and at the transition point to the retracted end area, on its inside has a diameter constriction adapted to the transition point to the drawn-in area and has an opening for the adjusting lever in one of its parts.
- the openable ring body can be formed from two ring halves of the same size, one of which has an all-round closed opening for the adjusting lever of the gas pressure spring, the axis of which extends perpendicular to the plane of division of the ring body.
- the gas pressure spring designed according to the invention has a securing collar due to the ring body, which encompasses the break-critical area of the outer tube at the point of use of the laterally protruding adjusting lever and the transition point into the retracted end area of the outer tube.
- the bending forces that occur are largely absorbed by this securing collar and the external tube is thus relieved of these forces.
- Due to the narrowing of the diameter of the ring body adapted to the transition point to the retracted area the fuse is still driven so far that even if the retracted end area is completely separated from the remaining outer tube, this end area cannot detach from the remaining outer tube. A blasting off of the narrowed end area together with the locking ring.
- An additional security advantage is that the passage opening for the adjusting lever is not formed in the parting plane between two ring body parts, but rather as a completely closed, gap-free passage opening in one of the ring body parts.
- An additional positive axial adjustment of the ring body on the outer tube can be brought about by the fact that the outer tube of the gas spring has indentations and the ring body has internal projections which are matched thereto and which also facilitate assembly of the ring body on the outer tube.
- the invention has the advantage that the safety device can still be attached to gas pressure springs already installed in office chairs. In this case, assembly can be made easier by the fact that the two ring halves of the ring body are articulated at one of their separation points and are therefore captively connected to one another.
- the adjustment movement of a chair seat body is normally not hindered by the ring body.
- the ring body which is advantageously designed as a turned part with a circular-cylindrical outer lateral surface, can be designed in the shape of a truncated cone at one end and towards the adjustable seat body on the chair. The truncated cone surface can partially still grasp the through hole for the adjusting lever, as a result of which the adjusting lever is given an increased clearance angle for its adjustment.
- the seat support 11 is connected via a gas pressure spring 12 to a central chair column 13 which is arranged on a star star 14 and is adjustable in height.
- An overflow valve arranged in the interior of the gas pressure spring can be opened on a laterally protruding adjustment lever 15 and the position of a piston (not shown) inside the gas pressure spring can be changed for the purpose of height adjustment of the seat support 11.
- the gas pressure spring 12 is provided with a securing device in the form of an annular body 16 enclosing its upper end region.
- FIG. 2 shows the outer tube 17 and its upper end section 18 drawn in from a transition point 19 and a lateral insertion opening 20 for the adjusting lever 15 of the gas pressure spring 12.
- the two halves 16a and 16b of the ring body 16 forming the securing device are shown in an exploded view.
- the two halves of the ring body can be connected to one another by screws 21, which can be inserted into holes 22 in the ring body half 16a and screwed into aligned threaded bores 23 (FIGS. 5, 6) of the ring body half 16b, and clamped onto the outer tube 17.
- the ring body halves 16a, 16b are provided on their inside at the upper end with an inwardly directed collar 24 adapted to the transition point 19 of the outer tube 17 of the gas pressure spring 12.
- the ring body half 16b has a through hole 25 which is aligned with the lateral opening 20 of the outer tube 17 of the gas pressure spring 12 and through which the adjusting lever 15 can be used for the gas pressure spring 12.
- FIG. 3 and 5 show the ring body 16 shown in FIG. 2 in an exploded view in the clamped state.
- the ring body 16 is manufactured as a turned part, which has then been divided into the two ring body halves 16a and 16b and has been provided with the through bore 25 in the ring body half 16b.
- Fig. 5 shows that the two halves 16a and 16b do not touch in their parting plane 26, that is, are clamped by the screws 21 on the outer tube 17 with a clamp.
- the circular cylindrical ring body 16 is provided with a truncated cone lateral surface 27, in which a part of the through opening 25 opens.
- FIGS. 4 and 6 differs from the embodiment according to FIGS. 2, 3 and 5 in that the two ring body halves 16a 'and 16b' according to FIG. 6 are articulated at one point about an axis 28 parallel to the outer tube 17 and are therefore captively connected. On the opposite side, they are connected to one another by means of clamping screws 21.
- this embodiment has a securing of the ring body 16 ′, which can be seen from FIG. 4, against axial displacement.
Landscapes
- Fluid-Damping Devices (AREA)
- Chairs Characterized By Structure (AREA)
- Springs (AREA)
- Gas Separation By Absorption (AREA)
- Treating Waste Gases (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
- Fluid-Pressure Circuits (AREA)
- Insulators (AREA)
- Finger-Pressure Massage (AREA)
- Carbon And Carbon Compounds (AREA)
- Ceramic Products (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
Description
Die Erfindung betrifft eine Gasdruckfeder mit Sicherungsvorrichtung, insbesondere zur Verwendung für Stühle, wobei die Sicherungsvorrichtung aus einem öffenbaren Ringkörper besteht, der ein Außenrohr der Gasdruckfeder umschließt, wobei das Außenrohr an seinem einen Ende eingezogen ist und an dessen anderem Ende eine Kolbenstange austritt, und daß das Außenrohr eine seitliche Einstecköffnung für einen Verstellhebel aufweist.The invention relates to a gas pressure spring with a safety device, in particular for use in chairs, the safety device consisting of an openable ring body which encloses an outer tube of the gas pressure spring, the outer tube being drawn in at one end and a piston rod emerging at the other end, and in that the outer tube has a lateral insertion opening for an adjusting lever.
Gasdruckfedern werden u. a. in größerem Umfange in Bürostühlen als Federungselemente und Sitzkörperverstellelemente verwendet. Dabei wird das Außenrohr vom Sitzträger des Stuhles aus auch stärkeren Biegewechselbelastungen ausgesetzt, die in Ausnahmefällen schon zu einem Bruch des Außenrohres und zu Unfällen durch ein aus dem Außenrohr der Gasdruckfeder herausschießendes Verschlußstück geführt haben. Die Gefahr des Herausschießens des Verschlußstückes aus dem Außenrohr wird zwar dadurch vermindert, daß das Außenrohr an seinem einen offenen Ende eingezogen ist. Der Erfindung liegt aber die Aufgabe zugrunde, eine Gasdruckfeder mit einer Sicherungsvorrichtung zu versehen, welche die Gefahr eines Außenrohrbruches vermindert und selbst bei einem Aufreißen des Außenrohres ein Abspringen des eingezogenen Endbereiches des Außenrohres der Gasdruckfeder und damit ein mögliches Herausschießen des unter hohem Gasdruck stehenden Verschlußstückes aus dem Außenrohr mit Sicherheit verhindert.Gas springs are u. a. used to a greater extent in office chairs as suspension elements and seat adjustment elements. The outer tube from the seat support of the chair is also exposed to stronger alternating bending loads, which in exceptional cases have already caused the outer tube to break and accidents due to a closure piece shooting out of the outer tube of the gas pressure spring. The risk of the closure piece shooting out of the outer tube is reduced by the fact that the outer tube is retracted at its one open end. However, the invention is based on the object of providing a gas pressure spring with a safety device which reduces the risk of an outer tube breakage and even if the outer tube is torn open, the end portion of the outer tube of the gas pressure spring springs off and thus a possible shooting out of the closure piece, which is under high gas pressure the outer tube with certainty prevented.
Die gestellte Aufgabe wird bei einer Gasdruckfeder mit den eingangs genannten Merkmalen erfindungsgemäß dadurch gelöst, daß der aus mindestens zwei miteinander lösbar verbundenen Teilen bestehende Ringkörper auf das Außenrohr der Gasdruckfeder im Bereich der seitlichen Einstecköffnung und an der Übergangsstelle zum eingezogenen Endbereich aufgespannt ist, auf seiner Innenseite eine an die Übergangsstelle zum eingezogenen Bereich angepaßte Durchmesserverengung und in einem seiner Teile eine Öffnung für den Verstellhebel aufweist. Vorteilhafterweise kann der öffenbare Ringkörper aus zwei gleichgroßen Ringhälften gebildet sein, von denen eine eine ringsum geschlossene Durchgangsöffnung für den Verstellhebel der Gasdruckfeder aufweist, deren Achse senkrecht zur Teilungsebene des Ringkörpers verläuft.The object is achieved in a gas pressure spring with the features mentioned in the present invention in that the ring body consisting of at least two releasably connected parts is clamped onto the outer tube of the gas pressure spring in the area of the lateral insertion opening and at the transition point to the retracted end area, on its inside has a diameter constriction adapted to the transition point to the drawn-in area and has an opening for the adjusting lever in one of its parts. Advantageously, the openable ring body can be formed from two ring halves of the same size, one of which has an all-round closed opening for the adjusting lever of the gas pressure spring, the axis of which extends perpendicular to the plane of division of the ring body.
Die erfindungsgemäß ausgebildete Gasdruckfeder besitzt durch den Ringkörper einen Sicherungskragen, der den bruchkritischen Bereich des Außenrohres an der Einsatzstelle des seitlich abstehenden Verstellhebels und der Übergangsstelle in den eingezogenen Endbereich des Außenrohres umfaßt. Von diesem Sicherungskragen werden die auftretenden Biegekräfte weitgehend aufgenommen und dadurch das Außenrohr von diesen Kräften entlastet. Durch die an die Übergangsstelle zum eingezogenen Bereich angepaßte Durchmesserverengung des Ringkörpers ist die Sicherung noch so weit getrieben, daß selbst bei einem vollständigen Abtrennen des eingezogenen Endbereiches vom übrigen Außenrohr dieser Endbereich sich nicht vom übrigen Außenrohr ablösen kann. Ein Absprengen des verengten Endbereiches zusammen mit dem Sicherungsring . würde bereits dadurch verhindert, daß die mindestens zwei Teile des Ringkörpers auf dem Außenrohr durch Verbindungsschrauben festgespannt sind. Als zusätzlicher Sicherungsvorteil ist zu werten, daß die Durchgangsöffnung für den Verstellhebel nicht in der Trennungsebene zwischen zwei Ringkörperteilen, sondern als ringsum geschlossene, trennspaltfreie Durchgangsöffnung in einem der Ringkörperteile ausgebildet ist. Eine zusätzliche formschlüssige Axialverstellsicherung des Ringkörpers auf dem Außenrohr kann dadurch bewirkt werden, daß das Außenrohr der Gasfeder Einbuchtungen und der Ringkörper daran angepaßte innere Vorsprünge aufweist, die auch eine Montage des Ringkörpers auf dem Außenrohr erleichtern.The gas pressure spring designed according to the invention has a securing collar due to the ring body, which encompasses the break-critical area of the outer tube at the point of use of the laterally protruding adjusting lever and the transition point into the retracted end area of the outer tube. The bending forces that occur are largely absorbed by this securing collar and the external tube is thus relieved of these forces. Due to the narrowing of the diameter of the ring body adapted to the transition point to the retracted area, the fuse is still driven so far that even if the retracted end area is completely separated from the remaining outer tube, this end area cannot detach from the remaining outer tube. A blasting off of the narrowed end area together with the locking ring. would already be prevented that the at least two parts of the ring body are clamped on the outer tube by connecting screws. An additional security advantage is that the passage opening for the adjusting lever is not formed in the parting plane between two ring body parts, but rather as a completely closed, gap-free passage opening in one of the ring body parts. An additional positive axial adjustment of the ring body on the outer tube can be brought about by the fact that the outer tube of the gas spring has indentations and the ring body has internal projections which are matched thereto and which also facilitate assembly of the ring body on the outer tube.
Die Erfindung hat den Vorteil, daß die Sicherungsvorrichtung noch nachträglich an bereits in Bürostühle eingebaute Gasdruckfedern angebracht werden kann. Hierbei kann eine Montageerleichterung noch dadurch erreicht werden, daß die beiden Ringhälften des Ringkörpers an einer ihrer Trennstellen gelenkig und damit unverlierbar miteinander verbunden sind. Die Verstellbewegung eines Stuhlsitzkörpers wird durch den Ringkörper normalerweise nicht behindert. Hier kann der vorteilhafterweise als Drehteil mit einer kreiszylindrischen Außenmantelfläche ausgebildete Ringkörper an seinem einen und am Stuhl dem verstellbaren Sitzkörper zugewandten Ende kegelstumpfförmig ausgebildet sein. Die Kegelstumpffläche kann dabei teilweise noch die Durchgangsbohrung für den Verstellhebel erfassen, wodurch der Verstellhebel nach oben einen vergrößerten Freiwinkel für seine Verstellung erhält.The invention has the advantage that the safety device can still be attached to gas pressure springs already installed in office chairs. In this case, assembly can be made easier by the fact that the two ring halves of the ring body are articulated at one of their separation points and are therefore captively connected to one another. The adjustment movement of a chair seat body is normally not hindered by the ring body. Here, the ring body, which is advantageously designed as a turned part with a circular-cylindrical outer lateral surface, can be designed in the shape of a truncated cone at one end and towards the adjustable seat body on the chair. The truncated cone surface can partially still grasp the through hole for the adjusting lever, as a result of which the adjusting lever is given an increased clearance angle for its adjustment.
Nachfolgend werden Ausführungsbeispiele erfindungsgemäß mit einer Sicherungsvorrichtung ausgebildeter Gasdruckfedern anhand der beiliegenden Zeichnung näher erläutert.In the following, exemplary embodiments according to the invention with a safety device of gas pressure springs are explained in more detail with reference to the attached drawing.
Es zeigen :
- Fig. 1 eine schematische Gesamtdarstellung eines mit einer Gasdruckfeder versehenen Bürostuhles ;
- Fig. 2 die Sicherungsvorrichtung der Gasdruckfeder zusammen mit einem Teil des Außenrohres der Gasdruckfeder und ihrem Verstellhebel in Explosionsdarstellung ;
- Fig. 3 einen axialen zentralen Querschnitt durch ein erstes Ausführungsbeispiel der Sicherungsvorrichtung ;
- Fig. 4 eine Seitenansicht eines zweiten Ausführungsbeispieles der Sicherungsvorrichtung, teilweise im Schnitt ;
- Fig. 5 eine Draufsicht auf die Sicherungsvorrichtung nach Fig. 3, teilweise im Schnitt ;
- Fig. 6 eine Draufsicht auf die Sicherungsvorrichtung nach Fig. 4, teilweise im Schnitt.
- Figure 1 is a schematic overall view of an office chair provided with a gas pressure spring.
- Figure 2 shows the securing device of the gas pressure spring together with a part of the outer tube of the gas pressure spring and its adjusting lever in an exploded view.
- 3 shows an axial central cross section through a first exemplary embodiment of the securing device;
- Fig. 4 is a side view of a second embodiment of the securing device, partly in section;
- Fig. 5 is a plan view of the fuse 3, partly in section;
- Fig. 6 is a plan view of the safety device of FIG. 4, partially in section.
Bei dem in Fig. 1 dargestellten Bürostuhl 10 ist der Sitzträger 11 über eine Gasdruckfeder 12 mit einer zentralen und auf einem Fußstern 14 angeordneten Stuhlsäule 13 höhenverstellbar verbunden. An einem seitlich abstehenden Verstellhebel 15 läßt sich ein im Innern der Gasdruckfeder angeordnetes Überströmventil öffnen und dadurch zwecks Höhenverstellung des Sitzträgers 11 die Lage eines nicht dargestellten Kolbens im Innern der Gasdruckfeder verändern. Die Gasdruckfeder 12 ist mit einer Sicherungsvorrichtung in Form eines ihren oberen Endbereich umschließenden Ringkörpers 16 versehen.In the
Fig. 2 zeigt das Außenrohr 17 und dessen ab einer Übergangsstelle 19 eingezogenen oberen Endabschnitt 18 sowie eine seitliche Einstecköffnung 20 für den Verstellhebel 15 der Gasdruckfeder 12. Die beiden Hälften 16a und 16b des die Sicherungsvorrichtung bildenden Ringkörpers 16 sind in Explosionsansicht dargestellt. Die beiden Ringkörperhälften lassen sich durch Schrauben 21, die sich in Bohrungen 22 der Ringkörperhälfte 16a versenkt einsetzen lassen und in fluchtende Gewindebohrungen 23 (Fig. 5, 6) der Ringkörperhälfte 16b einschraubbar sind, miteinander verbinden und auf dem Außenrohr 17 festspannen. Die Ringkörperhälften 16a, 16b sind auf ihrer Innenseite am oberen Ende mit einem an die Übergangsstelle 19 des Außenrohres 17 der Gasdruckfeder 12 angepaßten, einwärts gerichteten Kragen 24 versehen. Außerdem weist die Ringkörperhälfte 16b eine Durchgangsbohrung 25 auf, die mit der seitlichen Öffnung 20 des Außenrohres 17 der Gasdruckfeder 12 fluchtet und durch welche der Verstellhebel 15 für die Gasdruckfeder 12 einsetzbar ist.2 shows the
Die Fig. 3 und 5 zeigen den aus Fig. 2 in Explosionsdarstellung ersichtlichen Ringkörper 16 in aufgespanntem Zustand. Der Ringkörper 16 ist als Drehteil gefertigt, das anschließend in die beiden Ringkörperhälften 16a und 16b geteilt und in der Ringkörperhälfte 16b mit der Durchgangsbohrung 25 versehen worden ist. Fig. 5 zeigt, daß die beiden Hälften 16a und 16b sich in ihrer Trennungsebene 26 nicht berühren, also durch die Schrauben 21 auf dem Außenrohr 17 mit Klemmsitz festgespannt sind. Im oberen Teil ist der kreiszylindrische Ringkörper 16 mit einer Kegelstumpf-Mantelfläche 27 versehen, in welcher ein Teil der Durchgangsöffnung 25 mündet.3 and 5 show the
Das in den Fig. 4 und 6 dargestellte Ausführungsbeispiel unterscheidet sich vom Ausführungsbeispiel nach den Fig. 2, 3 und 5 dadurch, daß die beiden Ringkörperhälften 16a' und 16b' gemäß Fig. 6 an einer Stelle um eine zum Außenrohr 17 parallele Achse 28 gelenkig und damit unverlierbar miteinander verbunden sind. Auf der gegenüberliegenden Seite sind sie durch Spannschrauben 21 miteinander verbunden. Außerdem weist diese Ausführungsform eine aus Fig. 4 ersichtliche Sicherung des Ringkörpers 16' gegen eine Axialverschiebung auf. Sie wird durch einen in eine Innenbohrung der Ringkörperhälfte 16a' des Ringkörpers 16 mit nach innen vorstehendem Kopf eingesetzten Stift 29 bewirkt, der in eine durch eine Einkerbung erhaltene Vertiefung 30 des Außenrohres 17 der Gasdruckfeder 12 eintaucht. Diese Vertiefung 30 kann zwangsläufig beim Aufspannen des Ringkörpers 16' durch den Stift 29 geschaffen werden.The embodiment shown in FIGS. 4 and 6 differs from the embodiment according to FIGS. 2, 3 and 5 in that the two
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT83109832T ATE33921T1 (en) | 1983-07-22 | 1983-10-01 | GAS STRUT WITH SAFETY DEVICE. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE8321120 | 1983-07-22 | ||
| DE8321120U | 1983-07-22 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0132458A2 EP0132458A2 (en) | 1985-02-13 |
| EP0132458A3 EP0132458A3 (en) | 1986-03-19 |
| EP0132458B1 true EP0132458B1 (en) | 1988-05-04 |
Family
ID=6755443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP83109832A Expired EP0132458B1 (en) | 1983-07-22 | 1983-10-01 | Gas spring with safety device |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US4557470A (en) |
| EP (1) | EP0132458B1 (en) |
| AT (1) | ATE33921T1 (en) |
| CA (1) | CA1237059A (en) |
| DE (2) | DE8321120U1 (en) |
| DK (1) | DK154922C (en) |
| ES (1) | ES284911Y (en) |
| NO (1) | NO160324C (en) |
| PT (1) | PT77502B (en) |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3337617A1 (en) * | 1983-10-15 | 1985-04-25 | Röder GmbH Sitzmöbelwerke, 6000 Frankfurt | Sleeve for reinforcing a gas spring |
| US4699177A (en) * | 1984-08-20 | 1987-10-13 | Thomas Charles T | Positionable flanged wall pipe for masonry wall installation |
| GB2197422B (en) * | 1986-11-08 | 1991-06-26 | Evertaut Limited | Height adjustment mechanism for swivel chairs and other articles of furniture |
| US4824082A (en) * | 1988-03-08 | 1989-04-25 | Schaupp Edward R | Mechanical support for failed gas struts and method |
| GB2221249A (en) * | 1988-07-29 | 1990-01-31 | Ford Motor Co | A ball stud assembly |
| US5024303A (en) * | 1989-10-31 | 1991-06-18 | Kosloff Ronald S | Hatchback locking device |
| US5404914A (en) * | 1992-08-17 | 1995-04-11 | Christopher G. Ziu | Centering support for double containment pipe assembly |
| US5573290A (en) * | 1993-08-25 | 1996-11-12 | Smith; Edward J. | Hydraulic cylinder retainer |
| US6120385A (en) * | 1994-09-27 | 2000-09-19 | Nemeckay; Stephen A. | Golf training device |
| US5538299A (en) * | 1994-09-27 | 1996-07-23 | Nemeckay; Stephen A. | Housing and securing device |
| USD387971S (en) * | 1995-02-13 | 1997-12-23 | Dexter Automatic Products Company | Combined housing and securing device |
| US6343737B1 (en) * | 2000-04-25 | 2002-02-05 | Security Accessories Corp. | Mail slot door immobilizer |
| US6520067B1 (en) | 2001-12-12 | 2003-02-18 | Michael H. Hunt | Hydraulic piston locking device |
| EP1656331A1 (en) * | 2003-08-07 | 2006-05-17 | Ceramtec AG Innovative Ceramic Engineering | Material based on sialon's |
| US6874338B1 (en) | 2003-09-30 | 2005-04-05 | Michael H Hunt | Hydraulic piston locking device |
| EP2402098B2 (en) † | 2004-12-22 | 2021-03-03 | Ngk Spark Plug Co., Ltd. | Sialon insert and cutting tool equipped therewith |
| US8201506B1 (en) * | 2008-04-09 | 2012-06-19 | Parlapiano John P | Portable anti-theft device |
| US7930914B1 (en) * | 2009-11-23 | 2011-04-26 | Richard Warren Taylor | Anti-theft device |
| US8424925B2 (en) | 2011-06-03 | 2013-04-23 | The Pipe Line Development Company | Split fitting for pipe |
| USD665471S1 (en) | 2012-03-22 | 2012-08-14 | Karsten Manufacturing Corporation | Collar clamp for sports equipment |
| US20160144931A1 (en) * | 2014-11-20 | 2016-05-26 | British Columbia Maritime Employers Association | Folding hatch cover blocking device |
| DE102015010880A1 (en) * | 2015-08-25 | 2017-03-02 | Guido Wandschneider | Device for triggering a gas spring |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US540558A (en) * | 1895-06-04 | Grine | ||
| US1781911A (en) * | 1929-12-04 | 1930-11-18 | Ball Howard | Adjustable scaffolding |
| US1951754A (en) * | 1931-01-21 | 1934-03-20 | Early L Gilbert | Adjustable standard |
| CH271599A (en) * | 1949-02-16 | 1950-11-15 | Bigler Spichiger & Cie Ag | Swivel chair. |
| US3445130A (en) * | 1966-08-23 | 1969-05-20 | West Virginia Pulp & Paper Co | Split machinery hub |
| US3707032A (en) * | 1969-01-23 | 1972-12-26 | Weatherhead Co | Method of forming an abrasion resistant hose assembly |
| DE2459340C2 (en) * | 1974-12-16 | 1985-05-23 | Stabilus Gmbh, 5400 Koblenz | Infinitely height adjustable column |
| JPS52159313U (en) * | 1976-05-28 | 1977-12-03 | ||
| US4146058A (en) * | 1976-12-17 | 1979-03-27 | Bercovitz Louis J | Hose end protector |
| US4145044A (en) * | 1977-03-07 | 1979-03-20 | The Ohio Art Company | Portable basketball set |
| US4217061A (en) * | 1977-06-30 | 1980-08-12 | Abram N. Spanel | Tapered key coupling |
| CH619604A5 (en) * | 1977-08-25 | 1980-10-15 | Fehlbaum & Co | Apparatus for adjusting the seat height on a swivel chair |
| US4261446A (en) * | 1979-07-20 | 1981-04-14 | Bolger Joseph E | Removable closure subassembly for a sealed strut |
-
1983
- 1983-07-22 DE DE8321120U patent/DE8321120U1/en not_active Expired
- 1983-10-01 AT AT83109832T patent/ATE33921T1/en not_active IP Right Cessation
- 1983-10-01 EP EP83109832A patent/EP0132458B1/en not_active Expired
- 1983-10-01 DE DE8383109832T patent/DE3376463D1/en not_active Expired
- 1983-10-03 DK DK454883A patent/DK154922C/en not_active IP Right Cessation
- 1983-10-03 NO NO833580A patent/NO160324C/en unknown
- 1983-10-10 ES ES1983284911U patent/ES284911Y/en not_active Expired
- 1983-10-13 PT PT77502A patent/PT77502B/en unknown
- 1983-11-10 US US06/551,822 patent/US4557470A/en not_active Expired - Fee Related
- 1983-11-22 CA CA000441661A patent/CA1237059A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| PT77502B (en) | 1986-02-14 |
| CA1237059A (en) | 1988-05-24 |
| NO160324C (en) | 1989-04-12 |
| DK454883D0 (en) | 1983-10-03 |
| US4557470A (en) | 1985-12-10 |
| NO160324B (en) | 1989-01-02 |
| EP0132458A2 (en) | 1985-02-13 |
| NO833580L (en) | 1985-01-23 |
| DE3376463D1 (en) | 1988-06-09 |
| ES284911U (en) | 1985-11-01 |
| PT77502A (en) | 1983-11-01 |
| EP0132458A3 (en) | 1986-03-19 |
| ES284911Y (en) | 1986-05-16 |
| DE8321120U1 (en) | 1983-12-29 |
| ATE33921T1 (en) | 1988-05-15 |
| DK454883A (en) | 1985-01-23 |
| DK154922C (en) | 1989-05-29 |
| DK154922B (en) | 1989-01-09 |
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