초록 ▼

A support comprises a first support member formed for mounting to a wheelchair frame. A second support member is formed to carry a joystick. A pair of bars has first ends and second ends. The first ends are pivotally mounted to the first support member at spaced apart locations. The second ends are

A support comprises a first support member formed for mounting to a wheelchair frame. A second support member is formed to carry a joystick. A pair of bars has first ends and second ends. The first ends are pivotally mounted to the first support member at spaced apart locations. The second ends are pivotally mounted to the second support member at spaced apart locations to form a four-bar pantographic linkage assembly. The four-bar pantographic linkage assembly produces pantographic movement of the second support member with the joystick carried by the second support member between an extended position and a retracted position. A latch mechanism is provided between the pair of bars for releasably securing bars together in either the extended position or the retracted position. The latch mechanism includes a magnet exposed along an inner facing side wall of at least one bar. A steel insert is exposed along an inner facing side wall of the other one of the bars. The magnet cooperates with the steel insert to secure the bars in at least one of the extended or retracted positions.

대표청구항 ▼

A support comprises a first support member formed for mounting to a wheelchair frame. A second support member is formed to carry a joystick. A pair of bars has first ends and second ends. The first ends are pivotally mounted to the first support member at spaced apart locations. The second ends are

A support comprises a first support member formed for mounting to a wheelchair frame. A second support member is formed to carry a joystick. A pair of bars has first ends and second ends. The first ends are pivotally mounted to the first support member at spaced apart locations. The second ends are pivotally mounted to the second support member at spaced apart locations to form a four-bar pantographic linkage assembly. The four-bar pantographic linkage assembly produces pantographic movement of the second support member with the joystick carried by the second support member between an extended position and a retracted position. A latch mechanism is provided between the pair of bars for releasably securing bars together in either the extended position or the retracted position. The latch mechanism includes a magnet exposed along an inner facing side wall of at least one bar. A steel insert is exposed along an inner facing side wall of the other one of the bars. The magnet cooperates with the steel insert to secure the bars in at least one of the extended or retracted positions. ace of said horizontal body member for locating said flange; forming a pocket into said flange to receive a body of brazing filler material; fixing said body of brazing material in said flange such that said body protrudes from said pocket; shaping said flange against said second member with said location holes in alignment such that said protruding body defines a gap between said flange and the underlying surface for the flow of braze alloy; mechanically attaching said flange to said second member with rivets; and brazing said flange to said second member. 12. A method as recited in claim 11, wherein said second member is hydroformed. 13. A method as recited in claim 11, wherein said first member is hydroformed. 14. A method as recited in claim 11, wherein said body of brazing filler material is in the form of a ring, sheet, or rod, and having a thickness of approximately 0.1 to 3 millimeters. 15. A method as recited in claim 11, wherein said rivet is a blind rivet that is inserted through said location hole in said flange strip into said second member. 16. A method as recited in claim 11 or 14, wherein said brazing material comprises a silver-copper-zinc base alloy if said second member and/or said first member comprises steel. 17. A method as recited in claim 11 or 14, wherein said brazing material comprises an aluminum-silicon base alloy if said second member and/or said first member comprise aluminum. 18. A method as recited in claim 11, wherein said first member is a channel shaped pillar member and said second member is a tubular rocker member. 19. A method of joining an end of a first hydroformed member to a second hydroformed member, comprising steel or aluminum, in a T-shaped joint where said first member is to be the vertical portion of the T and the second member is the crossing portion of the T, said method comprising: cutting from said end of said first member to form at least one flange strip for shaping into conformance with the surface of said second member at which the joint is to be formed; forming corresponding location holes in each of said flange strip(s) and in the surface of said horizontal body member for locating said flange strip(s); forming a pocket into said flange strip(s) to receive a body of brazing filler material, such that said body protrudes from said pocket to define a brazing gap; fixing said brazing filler body in said pocket of said flange strip(s), where said brazing filler material comprises a silver-copper-zinc alloy in application to steel body members or an aluminum-silicon alloy in application to aluminum body members; shaping said flange strip(s) against said side of said second member with said location holes in alignment of the two so that the protruding brazing body causes a brazing fillet gap between said flange strip(s) and said second member; mechanically attaching said flange strip(s) to said second member with rivets, where said rivets are inserted through said location holes to which said flange strips(s) and said second member to preserve said brazing gap among said flange strip(s) and said second member; and