Patents Assigned to Quadra Wheelchairs, Inc.
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Patent number: 4572576Abstract: A wheelchair having swingable foot supports which are capable of being shifted out of the way of the user to enable easy entry and exit from the wheelchair. The wheelchair generally comprises a pair of laterally spaced apart longitudinally extending side frames. At least one of these side frames and preferably both of the side frames have a main frame section. A foot support is mounted on the front frame section of each side frame and is adapted to be located in a frontal region of the wheelchair for support of the feet of the user. Individual pivot means enable the front frame sections to be angularly shifted out of the plane of the main frame sections and to carry therewith the foot supports. In this way, when the foot support member is shifted laterally, a user having a lower body disability will have easier access to and from the wheelchair. A releasable locking means is provided for normally retaining the first frame section in alignment with the main frame section e.g.Type: GrantFiled: August 20, 1984Date of Patent: February 25, 1986Assignee: Quadra Wheelchairs, Inc.Inventor: Jeffrey P. Minnebraker
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Patent number: 4570756Abstract: A brake device for use with wheelchairs of the type having a main frame and a pair of spaced apart large diameter driving wheels, such as rear wheels. The brake device comprises a bracket or other mounting element for mounting to the wheelchair frame and a lever arm which is shiftable to a wheel locking position to move a brake tab into engagement with the rear wheel of a wheelchair to lock the wheel against further rotation. The lever arm is also capable of being shifted to a reverse or non-locking position so that it moves the tab out of engagement with the wheelchair driving wheel and to a position where it cannot be engaged with the driving wheel to permit free-wheeling movement thereof. The brake device is constructed so that the tab is moveable to a non-interfering position where it is generally parallel to the plane of rotation of the wheel and is not likely to be contacted by the hand of a user. In one embodiment, the tab is manually moveable to the non-interfering position.Type: GrantFiled: September 30, 1983Date of Patent: February 18, 1986Assignee: Quadra Wheelchairs, Inc.Inventors: Jeffrey P. Minnebraker, George E. Linder
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Patent number: 4515383Abstract: A wheelchair capable of being constructed in several different sizes from components of standard size in order to permit users of different sizes and users with one or more handicaps to conveniently use such wheelchairs. In addition, the wheelchair is constructed with a frame and related components so that it is capable of being folded to a collapsed position for storage and transport and expanded for operation and use. The wheelchair is uniquely adapted for normal wheelchair operation and is highly effective for use in sports or athletic activities. Adjustability of both the front wheels and the rear wheels permits different riding and maneuverability characteristics for both normal in-use transport and sports activities.Type: GrantFiled: May 24, 1984Date of Patent: May 7, 1985Assignee: Quadra Wheelchairs, Inc.Inventor: Jeffrey P. Minnebraker
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Patent number: 4477098Abstract: A wheelchair capable of being constructed in several different sizes from components of standard size in order to permit users of different sizes and users with one or more handicaps to conveniently use such wheelchairs. In addition, the wheelchair is constructed with a frame and related components so that it is capable of being folded to a collapsed position for storage and transport and expanded for operation and use. The wheelchair is uniquely adapted for normal wheelchair operation and is highly effective for use in sports or athletic activities. Adjustability of both the front wheels and the rear wheels permits different riding and maneuverability characteristics for both normal in-use transport and sports activities.Type: GrantFiled: May 14, 1982Date of Patent: October 16, 1984Assignee: Quadra Wheelchairs, Inc.Inventor: Jeffrey P. Minnebraker
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Patent number: 4428594Abstract: Front wheel assemblies for use with wheelchairs of the type having a main frame and large diameter rear wheels and a seat structure thereon. The front wheel assemblies are highly effective in that they permit a quick release of the front wheel for easy and quick removal of the front wheel and easy and quick replacement of a front wheel. The front wheel assemblies are designed so that the trailing angle of the front wheel relative to the ground or supporting surface can be varied and further, a locking mechanism is provided for temporarily locking the front wheels in a selected position.Type: GrantFiled: May 24, 1982Date of Patent: January 31, 1984Assignee: Quadra Wheelchairs, Inc.Inventor: Jeffrey P. Minnebraker
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Patent number: 4351540Abstract: A wheelchair capable of being constructed in several different sizes from components of standard size in order to permit users of different sizes and users with one or more handicaps to utilize such wheelchairs. The wheelchair includes a main frame and a foot support assembly which can be telescopically adjustably affixed to the main frame. In addition, a seat section can be telescopically adjustably affixed to the main frame such that the seat is located at a selected height and the foot support section can extend outwardly from the frame for a selected distance to accommodate users of differing height. The rear wheels are positionally mounted with respect to the main frame such that the rear wheels can be located in several different positions in order to change the overall center of gravity and the wheelbase of the wheelchair. In this way, the wheelchair can be used for conventional wheelchair movement, as well as for athletic activities.Type: GrantFiled: November 13, 1980Date of Patent: September 28, 1982Assignee: Quadra Wheelchairs, Inc.Inventor: Jeffrey P. Minnebraker
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Patent number: D269172Type: GrantFiled: September 8, 1980Date of Patent: May 31, 1983Assignee: Quadra Wheelchairs, Inc.Inventor: Jeffrey P. Minnebraker
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Patent number: D271679Type: GrantFiled: March 24, 1981Date of Patent: December 6, 1983Assignee: Quadra Wheelchairs, Inc.Inventor: Jeffrey P. Minnebraker
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Patent number: D277949Type: GrantFiled: May 14, 1982Date of Patent: March 12, 1985Assignee: Quadra Wheelchairs, Inc.Inventor: Jeffrey P. Minnebraker
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Patent number: RE32242Abstract: A wheelchair capable of being constructed in several different sizes from components of standard size in order to permit users of different sizes and users with one or more handicaps to utilize such wheelchairs. The wheelchair includes a main frame and a foot support assembly which can be telescopically adjustably affixed to the main frame. In addition, a seat section can be telescopically adjustably affixed to the main frame such that the seat is located at a selected height and the foot support section can extend outwardly from the frame for a selected distance to accommodate users of differing height. The rear wheels are positionally mounted with respect to the main frame such that the rear wheels can be located in several different positions in order to change the overall center of gravity and the wheelbase of the wheelchair. In this way, the wheelchair can be used for conventional wheelchair movement, as well as for athletic activities.Type: GrantFiled: September 24, 1984Date of Patent: September 9, 1986Assignee: Quadra Wheelchairs, Inc.Inventor: Jeffrey P. Minnebraker