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71. 发明专利

CA2243385A1 IMPROVED BALL SOCKET CONNECTOR 未知
公开(公告)号：CA2243385A1
公开(公告)日：1999-01-23
申请号：CA2243385
申请日：1998-07-20
申请人： AVM INC
发明人： BAUMAN WALTER DOUGLAS
IPC分类号： F16C11/06 , E05F5/10
摘要： A ball socket connector particularly adapted for connecting a gas spring shaft with a vehicle so that the gas spring may be used to hold open the vehicle's truck lid, deck lid, hood, lift glass, hatch door (in hatch type vehicles) or the rear door or gate (in minivan or sports utility type vehicles). A manually slidable plate, which is mounted on and slidable with respect to the connector body, retains the ball on a ball stud in an internal cavity in a connector body. The ball stud projects from the internal cavity through an elongated open slot in the connector body so as to permit the ball socket connector to provide four degrees of freedom of motion between the gas spring and vehicle.

72. 发明专利

GB2293206B Adjustable speed gas spring 未知
公开(公告)号：GB2293206B
公开(公告)日：1998-08-19
申请号：GB9513703
申请日：1995-07-05
申请人： AVM INC
发明人： JEFFRIES MARK STEVEN
IPC分类号： E05F3/02 , E05F1/08 , F16F9/00 , F16F9/02 , F16F9/516 , E05F3/00
摘要： An adjustable speed gas spring primarily adapted for use has a part of a door closing mechanism. The gas spring includes a piston assembly which is disposed within an elongated fluid chamber and which upon relative rotation of the shaft with respect to the tubular body, permits the user to adjust the shaft extension velocity. The gas spring is fully functional in any shaft orientation.

73. 发明专利

DE19681445T1 未知
公开(公告)号：DE19681445T1
公开(公告)日：1998-05-20
申请号：DE19681445
申请日：1996-05-30
申请人： AVM INC
发明人： CHAMBERLIN JAMES B
IPC分类号： F16F9/02 , F16F9/32 , F16F9/34 , F16F9/36
摘要： A pneumatic counterbalance spring includes a hollow cylinder defining a first internal chamber divided into a compression compartment and an extension compartment by a piston movably mounted in the chamber. The compression compartment contains pressurized gas and a seal assembly mounted on the piston prevents the gas from escaping into the extension compartmint. A piston rod is slibably mounted in the open end of the cylinder and has its inner end connected to the piston. The piston rod includes a hollow portion defining a second internal chamber which is fluidly connected to the compression compartment by a flow passage. As a result, the compression compartment has an effective volume of A+B, where A represents the volume of the compression compartment and B represents the volume of the piston rod internal chamber. This design is advantageous in applications where a low spring rate is desired and where the length of the spring needs to be minimized. A gas permeable insert may be positioned in the flow passage to provide restricted rate flow of gas through the flow passage. Alternatively, a check valve may be provided for providing restricted rate flow of gas through the flow passage during the extension stroke and a tree, by-pass flow of gas through the flow passage during the compression stroke.

74. 发明专利

CA2267329A1 IMPROVED SEAL FOR GAS SPRINGS AND THE LIKE 未知
公开(公告)号：CA2267329A1
公开(公告)日：1998-04-09
申请号：CA2267329
申请日：1997-10-01
申请人： AVM INC
发明人： CHAMBERLIN JAMES B , BAUMAN WALTER DOUGLAS , BOYD RICHARD M , ROACH JACK R , JEFFRIES MARK S
IPC分类号： F16F9/02 , F16F9/36 , F16J15/16 , F16J15/32 , F16J15/56
摘要： A seal (12) that is particularly suitable for use in a gas spring (14) and other high pressure hydraulic and pneumatic sealing applications and that minimizes the leakage of relatively high pressure gas and lubricating oil from the rod end of the gas spring or other applications. The generally annular seal body (62) includes a number of convex sealing lobes (74, 76, 78, 82, 84) on its radially inwardly and outwardly facing surfaces. All of the sealing lobes have a predetermined radius and project radially beyond the plane of their respective surfaces. The axial facing surfaces (68, 72) of the seal body (62) are generally flat or non-concave. The seal also includes a wiper insert (94) secured in a recess (92) in one corner of the radially inwardly facing surface (64) of the seal body (62). When the seal body (62) is compressed between the relatively movable, annularly spaced piston rod (32) and cylinder (16), the compression induced stress in the seal causes the seal body (52) and insert (94) to form an effective gas and oil seal.

75. 发明专利

GB2306567A Variable-speed gas spring:door closer 未知
公开(公告)号：GB2306567A
公开(公告)日：1997-05-07
申请号：GB9622112
申请日：1996-10-23
申请人： AVM INC
发明人： JEFFRIES MARK STEVEN , CHAMBERLAIN JAMES B , EVANS ARCHIE L
IPC分类号： E05F1/08 , E05F1/10 , E05F3/02 , F16F9/02 , F16F9/46 , F16F9/516 , E05F3/00 , F16F9/00
摘要： In a variable-speed gas spring, usable as a door closer, a piston has one part rotatable, with piston rod rotation, relative to another part to vary the length of a liquid flow path through the piston, thus varying the speed of extension of the piston rod. One piston part has an inwardly-directed duct which overlaps groove 106 of an abutting part 76, relative part rotation varying the length of groove part 112 through which fluid has to flow. Alternatively, path length may be varied by relative rotation so that: one part having a curved outer surface exposes a varying length of a radial groove, of varying depth, in another part (Figures 11-16, not shown); or, a radial slot in one part overlaps, with relative rotation, different ones of inwardly-directed slots in a second part, the second-part slots having different widths and radial extent (Figures 17-26, not shown). The piston moves axially on the rod to allow fluid flow during spring compression. A seal on piston part 76 has a projection which engages a cylinder groove.

76. 发明专利

CA2222799A1 PNEUMATIC SPRING 未知
公开(公告)号：CA2222799A1
公开(公告)日：1996-12-19
申请号：CA2222799
申请日：1996-05-30
申请人： AVM INC
发明人： CHAMBERLIN JAMES B
IPC分类号： F16F9/02 , F16F9/32 , F16F9/34 , F16F9/36 , E05F3/02
摘要： A pneumatic counterbalance spring (10) includes a hollow cylinder (15) defining a first internal chamber (20) divided into a compression compartment (50) and an extension compartment (55) by a piston (25) movably mounted in the chamber. The compression compartment (50) contains pressurized gas and a seal assembly (60) which is mounted on the piston (25) prevents the gas from escaping into the extension compartment (55). A piston rod is slidably mounted in the open end of the piston. The piston rod (30) includes a hollow portion defining a second internal chamber (125) which is fluidly connected to the compression compartment (50) by a flow passage (140). A gas permeably insert (150) may be positioned in the flow passage to provide restricted rate flow of gas through the flow passage.

77. 发明专利

GB9622112D0 Adjustable speed gas spring 未知
公开(公告)号：GB9622112D0
公开(公告)日：1996-12-18
申请号：GB9622112
申请日：1996-10-23
申请人： AVM INC
IPC分类号： E05F1/08 , E05F1/10 , E05F3/02 , F16F9/02 , F16F9/46 , F16F9/516
摘要： An adjustable speed gas spring primarily adapted for use as a part of a door closing mechanism. The gas spring includes a piston assembly which is disposed within an elongated fluid chamber and which upon relative rotation of the shaft with respect to the tubular body, permits the user to adjust the shaft extension velocity. The gas spring is fully functional in any shaft orientation.

78. 发明专利

DE4324472A1 未知
公开(公告)号：DE4324472A1
公开(公告)日：1994-01-27
申请号：DE4324472
申请日：1993-07-21
申请人： AVM INC SOUTH CAROLINA CORP
发明人： CHAMBERLIN JAMES B
IPC分类号： F16C11/06 , F16F9/54 , E05F1/10
摘要： A captive ball and end connector assembly having a spring wire split, ball retaining ring positioned within the socket. The ball retaining ring is movable to an expanded position so as to enable the ball to be inserted through the ring. After the ball has been inserted, the ring then presses against the ball and a shoulder in the socket so as to hold the ball firmly in the socket. The ball shaft may be inserted into the socket so that its threaded end may selectively project from the socket in either one of two directions. The ball retaining ring may be returned to its expanded position, whereby the ball may be removed from the socket, by the use of a tool manipulated from without the socket.

79. 发明专利

GB2268971A Captive ball joint end connector assembly 未知
公开(公告)号：GB2268971A
公开(公告)日：1994-01-26
申请号：GB9308673
申请日：1993-04-27
申请人： AVM INC
发明人： CHAMBERLIN JAMES B
IPC分类号： F16C11/06 , F16F9/54
摘要： A captive bail and end connector assembly has a spring wire, ball retaining ring (96) positioned within the socket of the connector (34). The ball retaining ring (96) is movable to an expanded position so as to enable the ball (36) to be inserted through the ring. After the ball has been inserted, the ring then presses against the ball and a shoulder in the socket so as to hold the ball firmly in the socket. The ball shaft (32) may be inserted into the socket so that its threaded end (42) may selectively project from the socket in either of two directions. The ball retaining ring (96) may be returned to its expanded position, whereby the ball (36) may be removed from the socket, by the use of a tool manipulated from without the socket via a slot 98. The assembly may be used to connect a gas spring to the body or hatch back of a vehicle.

80. 发明专利

GB2206645B PNEUMATIC SPRING LINK 未知
公开(公告)号：GB2206645B
公开(公告)日：1991-06-26
申请号：GB8818852
申请日：1988-08-09
申请人： AVM INC
发明人： LUDWIG GEORGE C
IPC分类号： E05F3/02 , B60J5/10 , E05F1/12 , F16F9/00 , F16F9/06 , F16F9/49
摘要： A transversely mounted, single pneumatic spring, and dual bell crank and idler link assembly providing a compact counterbalance for hinged closures such as automobile trunk lids. In an automobile trunk installation, the assembly is installed with the spring in lateral disposition in the forward upper portion of the trunk, thus being effectively concealed. Alternative pneumatic spring enhancements, e.g., a multi-output force feature and a pressure decay compensation feature may be incorporated in the spring unit to enhance opening of the lid and to improve life expectancy of the pneumatic spring by minimizing and effectively negating pressure loss due to leakage of gas past the shaft seal. Excess spring cylinder length can provide space or volume zones used for the enhancement features. Structure which provides a multiple output force for the pneumatic spring, utilizes positioning of the spring shaft end bushing and seal to vary the working volume by changing effective cross-section area of the piston shaft near the end of a compression stroke. The extra cylinder length enables a sealed partition wall to separate extra volume and the operative volume part of the cylinder. The extra volume is filled with a supply of gas under higher pressure than that of the spring operative gas pressure and, in conjunction with permeability characterisitcs of the spring shaft seal and the partition wall seal, enables compensation for leakage from the cylinder. Multiple force output provisions can be used in a substantially vertically disposed spring, filled with a predetermined quantity of oil, and used as a liquid-pneumatic shock absorber. A supplemental orifice type disc valve unit can be used in such a shock absorber, located near the closed end of the spring cylinder.

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