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公开(公告)号：EP0901444A1
公开(公告)日：1999-03-17
申请号：EP97916133.0
申请日：1997-03-06
申请人： Teftec Corporation
CPC分类号： B60K1/00 , A61G5/042 , A61G2203/14 , B60K17/046 , B60K17/30 , B60Y2200/84 , B62D11/14 , Y10S180/907
摘要： An electrically powered vehicle having two primary ground engaging wheels (5) operatively connected to a driving motor (10) by an automatic transmission (50) and to a steering motor (20) by a shiftable bevel gear (7b) which permits opposite variations in rotational speed of the ground engaging wheels (5).
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公开(公告)号：EP0898517B1
公开(公告)日：2006-02-08
申请号：EP97925658.3
申请日：1997-05-20
申请人： Teftec Corporation
CPC分类号： A61G5/06 , A61G5/042 , A61G5/10 , A61G5/1078 , B60G17/052 , B60G21/023 , B60G21/026 , B60G21/10 , B60G2202/21 , B60G2300/24 , Y10S180/907
摘要： A suspension system for the ground engaging powered wheels (3) and/or caster wheels (4) of a power wheelchair (1) comprises three links, two of which (6) are universally pivotally connected between the frame (2) of the wheelchair (1) and a wheel mounting transaxle housing or subframe (5) so that the wheels (3) can tilt relative to the frame (2) of the wheelchair (1) in a vertical plane. A third link (7) is connected between the vehicle frame (2) and the wheel mounting structure which can only pivot in a vertical plane, thus restraining the wheels (3) from any lateral displacement relative to the vehicle frame (2). Fluid cylinders (13, 13) operable between the links (6, 7) and the vehicle frame (20) provide cushioning of the frame (2) and also, by subtraction of fluid from the fluid cylinders (13), can lower the entire frame of the wheelchair (2) relative to the ground engaging wheels (3) to permit the wheelchair (1) and occupant to drive into the side door opening of a conventional van.
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公开(公告)号：EP0901444B1
公开(公告)日：2004-11-10
申请号：EP97916133.8
申请日：1997-03-06
申请人： Teftec Corporation
IPC分类号： B62D11/14
CPC分类号： B60K1/00 , A61G5/042 , A61G2203/14 , B60K17/046 , B60K17/30 , B60Y2200/84 , B62D11/14 , Y10S180/907
摘要： An electrically powered vehicle having two primary ground engaging wheels (5) operatively connected to a driving motor (10) by an automatic transmission (50) and to a steering motor (20) by a shiftable bevel gear (7b) which permits opposite variations in rotational speed of the ground engaging wheels (5).
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公开(公告)号：EP0898517A1
公开(公告)日：1999-03-03
申请号：EP97925658.0
申请日：1997-05-20
申请人： Teftec Corporation
CPC分类号： A61G5/06 , A61G5/042 , A61G5/10 , A61G5/1078 , B60G17/052 , B60G21/023 , B60G21/026 , B60G21/10 , B60G2202/21 , B60G2300/24 , Y10S180/907
摘要： A suspension system for the ground engaging powered wheels (3) and/or caster wheels (4) of a power wheelchair (1) comprises three links, two of which (6) are universally pivotally connected between the frame (2) of the wheelchair (1) and a wheel mounting transaxle housing or subframe (5) so that the wheels (3) can tilt relative to the frame (2) of the wheelchair (1) in a vertical plane. A third link (7) is connected between the vehicle frame (2) and the wheel mounting structure which can only pivot in a vertical plane, thus restraining the wheels (3) from any lateral displacement relative to the vehicle frame (2). Fluid cylinders (13, 13) operable between the links (6, 7) and the vehicle frame (20) provide cushioning of the frame (2) and also, by subtraction of fluid from the fluid cylinders (13), can lower the entire frame of the wheelchair (2) relative to the ground engaging wheels (3) to permit the wheelchair (1) and occupant to drive into the side door opening of a conventional van.
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公开(公告)号：EP0869874B1
公开(公告)日：2004-11-03
申请号：EP96945108.7
申请日：1996-12-26
申请人： Teftec Corporation
发明人： FINCH, Thomas, E.
IPC分类号： B60B33/00
CPC分类号： B60B33/0007 , B60B33/0021 , B60B33/0028 , B60B33/0039 , B60B33/0049 , B60B33/0057 , B60B33/0068 , B60B33/0073 , B62B2301/046 , Y10T16/1867 , Y10T16/196
摘要： An assemblage for mounting a caster wheel (3) on a depending stationary post (10) on a wheeled load carrier comprises a body element (20) having a cylindrical chamber (20a) concentrically surrounding the support post (10). The body element has a bracket (20b) for mounting a caster wheel for rotation about a horizontal axis. A vertical stack of washers (21, 22) surround the support post and alternate ones of such washers are secured to the support post and rotatable within the cylindrical chamber while the remainder of such washers are co-rotatable with the body element about the axis of the support post. The cylindrical chamber is filled with a lubricating fluid to a sufficient depth to cover all abutting surfaces of said washers, thereby providing viscous fluid sharing resistance to shimmying movement of the caster wheel relative to the support post.
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公开(公告)号：EP0869874A1
公开(公告)日：1998-10-14
申请号：EP96945108.0
申请日：1996-12-26
申请人： Teftec Corporation
发明人： FINCH, Thomas, E.
IPC分类号： B60B33
CPC分类号： B60B33/0007 , B60B33/0021 , B60B33/0028 , B60B33/0039 , B60B33/0049 , B60B33/0057 , B60B33/0068 , B60B33/0073 , B62B2301/046 , Y10T16/1867 , Y10T16/196
摘要： An assemblage for mounting a caster wheel (3) on a depending stationary post (10) on a wheeled load carrier comprises a body element (20) having a cylindrical chamber (20a) concentrically surrounding the support post (10). The body element has a bracket (20b) for mounting a caster wheel for rotation about a horizontal axis. A vertical stack of washers (21, 22) surround the support post and alternate ones of such washers are secured to the support post and rotatable within the cylindrical chamber while the remainder of such washers are co-rotatable with the body element about the axis of the support post. The cylindrical chamber is filled with a lubricating fluid to a sufficient depth to cover all abutting surfaces of said washers, thereby providing viscous fluid sharing resistance to shimmying movement of the caster wheel relative to the support post.
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