Land vehicles – Wheeled – Occupant propelled type
Reexamination Certificate
2008-03-11
2008-03-11
Morris, Lesley D. (Department: 3611)
Land vehicles
Wheeled
Occupant propelled type
C280S251000, C074S025000, C074S163000
Reexamination Certificate
active
07341267
ABSTRACT:
A reversible ratchet mechanism includes a pair of roller clutches set to operate in opposite directions when engaged by a belt. During the forward motion of the ratchet assembly in either direction of propulsion of the belt, one roller clutch is disengaged while the other is engaged and locked, thereby propelling the belt. During the backward stroke, the engaged roller clutch is free to rotate. The result is that the reciprocating motion of the assembly is converted into the linear motion of the belt. The ratchet assembly includes a shift mechanism to reverse the engagement of the roller clutches and change the direction of propulsion of the belt produced by the push/pull action of the operator. The invention is advantageously used in conjunction with a wheelchair.
REFERENCES:
patent: 1058123 (1913-04-01), Whitaker
patent: 4453729 (1984-06-01), Lucken
patent: 4583754 (1986-04-01), Seeliger
patent: 4758013 (1988-07-01), Agrillo
patent: 4762332 (1988-08-01), Seol
patent: 4805711 (1989-02-01), Lautzenhiser
patent: 4858483 (1989-08-01), Blakemore
patent: 5007655 (1991-04-01), Hanna
patent: 5288092 (1994-02-01), Miller et al.
patent: 5303945 (1994-04-01), Oxford
patent: 5351566 (1994-10-01), Barnett
patent: 5540111 (1996-07-01), Barnett et al.
patent: 5632499 (1997-05-01), Hutcherson et al.
patent: 5683321 (1997-11-01), Barnett
patent: 5746437 (1998-05-01), Faber
patent: 5865455 (1999-02-01), Taylor
patent: 6024369 (2000-02-01), Goldstein et al.
patent: 2004/0104554 (2004-06-01), Watwood et al.
patent: WO9301787 (1993-02-01), None
patent: WO9915397 (1999-04-01), None
Morris Lesley D.
Quarles & Brady LLP
Williams Maurice
LandOfFree
Reversible ratchet mechanism does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Reversible ratchet mechanism, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reversible ratchet mechanism will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2790243