EP 0163139 A3 19870107 - COLLAPSIBLE WHEEL CHAIR
Title (en)
COLLAPSIBLE WHEEL CHAIR
Publication
Application
Priority
CH 249484 A 19840521
Abstract (en)
[origin: US4684149A] To reduce the weight of the collapsible wheelchair, and the depth of the wheelchair, when collapsed, only three spreader braces (25,49,51) are used to connect, respectively, the back and side frame elements, (45,47) of the collapsible wheelchair together, the remaining interconnection being formed by tension cables (53;57',57'',59''), which tend to counteract the spreading effect of the collapsible spreader braces, and are located, with respect to the spreader braces, in triangular position, one (53) of the tensioning cable extending parallel to two spreader braces (49,51) located in triangular configuration with respect to the frame elements (45,47), and other tensioning cables extending diagonally, in pairs (57,59) between the frame elements (45,47), located at the rear portion of the chair to hold the rear portion towards each other when the weight (24) of the user tends to pull together the forward portions (45d,47d) of the frame elements (45,47). The spreader braces are preferably formed with over-center toggle, or knee joints and lockable in position by a safety connecting sleeve (61).
IPC 1-7
IPC 8 full level
A61G 5/02 (2006.01); A61G 5/08 (2006.01); A61G 5/14 (2006.01)
CPC (source: EP US)
A61G 5/08 (2013.01 - EP US); A61G 5/0816 (2016.10 - EP US); A61G 5/1054 (2016.10 - EP US); A61G 5/14 (2013.01 - EP US)
Citation (search report)
- [E] US 4553770 A 19851119 - LYMAN ROGER T [US]
- [A] DE 389653 C 19240205 - JACOB RUECKERT
- [A] GB 640737 A 19500726 - WILLIAM JOHN MILLS
- [A] US 2633896 A 19530407 - MARTIN THOMPSON HERMAN
- [A] US 3848883 A 19741119 - BREACAIN S
- [A] DE 2625045 B1 19770811 - VALUTEC AG
- [AP] EP 0127511 A2 19841205 - LACOSTE SA [FR]
Designated contracting state (EPC)
CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0163139 A2 19851204; EP 0163139 A3 19870107; EP 0163139 B1 19900808; CH 665121 A5 19880429; DE 3579041 D1 19900913; JP H0510103 B2 19930208; JP S60253450 A 19851214; US 4684149 A 19870804
DOCDB simple family (application)
EP 85105115 A 19850426; CH 249484 A 19840521; DE 3579041 T 19850426; JP 10418085 A 19850517; US 73643985 A 19850521