Land vehicles – Wheeled – Occupant propelled type
Patent
1984-01-16
1986-01-21
Peters, Jr., Joseph F.
Land vehicles
Wheeled
Occupant propelled type
280242WC, 297DIG4, B62B 1100
Patent
active
045653852
ABSTRACT:
A tiltable supporting wheel chair having a tilting mechanism with front support wheels which pivot downward and outward engaging the floor and raising the front of the wheelchair and tilting it backwards. The tilting mechanism further includes a cross-frame pivotably attached to the frame of the wheelchair and activated by movement of an arm attached to it. The arm is controlled by a rod leading to a pivotal plate which is connected to a lever on the side of the wheelchair by a linkage. Upon movement of the lever, the linkage rotates the plate, moving the arm and cross-frame to extend or retract the front wheels. A locking mechanism prevents accidental movement of the level. Rear supports extend behind the wheelchair and engage the floor upon the front wheels being pivoted to their furthest point forward. An adjustable leg support includes a leg pad slidably mounted on a cross-frame which is pivotly mounted to the frame with a locking rod engaging a locking plate for controlled pivotal movement of the cross-frame. A spring latch engages supports of the cross-frame to allow the pad to lockingly slide along the length of the cross-frame. A head rest is provided which includes a heat support secured to the back support of the chair with a head cushion adjustably mounted thereon.
REFERENCES:
patent: 1241357 (1917-09-01), Drosdowet
patent: 2150441 (1939-03-01), Harris
patent: 2601889 (1952-07-01), Everest et al.
patent: 3189384 (1965-06-01), Bliss
patent: 3674310 (1972-07-01), Montagano
patent: 3848883 (1974-11-01), Breacain
Birkenholz James D.
Peters Jr. Joseph F.
Watts Charles R.
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