Material or article handling – Self-loading or unloading vehicles – Loading or unloading by other carrier or mover means – and...
Reexamination Certificate
2007-12-11
2007-12-11
Brahan, Thomas J. (Department: 3654)
Material or article handling
Self-loading or unloading vehicles
Loading or unloading by other carrier or mover means, and...
C414S921000
Reexamination Certificate
active
10768310
ABSTRACT:
A dual function, inboard barrier/bridgeplate assembly for wheelchair lifts having a stowable platform, the barrier being pivotably secured to the inboard end of the lift5platform, which barrier is actuated by a link to variously raise the barrier to a safety position and lower it to a bridging position in accordance with the position of the platform. The dual function barrier/bridgeplate system is particularly useful in combination with a parallelogram type lift employing an articulated lever assembly having a sliding block for leveraging the platform from a horizontal transfer orientation to a vertical, or over-vertical stowage position. There is disclosed a barrier assembly in which a spring assist system comprising a gas spring acting on one member of the articulated lever assembly and a lever arm linking a second arm of the articulated lever assembly to the barrier co-operate to actuate the barrier from a raised position when the platform is away from the transfer level and a lowered position to act as a bridge plate at the transfer level. A telescoping push arm is included which actuates the barrier by means of a pivoted link which rotates the barrier in response to the telescoping motion of the push arm. A safety interlock and load detecting system may be employed to prevent the platform from moving to the stowed position when a load greater than a predetermined weight is on the platform. An anti-free fall mechanism is disclosed comprising a pin in the slide block which engages mating slots in the telescoping push arm members to lock their length during the initial stage of deploy of the platform downwardly from the vertical stowed position.
REFERENCES:
patent: 4124099 (1978-11-01), Dudynskyj
patent: 4353436 (1982-10-01), Rice et al.
patent: 4474527 (1984-10-01), Risner et al.
patent: 4534450 (1985-08-01), Savaria
patent: 4671387 (1987-06-01), Bourgeois
patent: 5149246 (1992-09-01), Dorn
patent: 5158419 (1992-10-01), Kempf et al.
patent: 5261779 (1993-11-01), Goodrich
patent: 5556250 (1996-09-01), Fretwell et al.
patent: 5605431 (1997-02-01), Saucier et al.
patent: 5672041 (1997-09-01), Ringdahl et al.
patent: 5806632 (1998-09-01), Budd et al.
patent: 5944473 (1999-08-01), Saucier et al.
patent: 6039528 (2000-03-01), Cohn
patent: 6062805 (2000-05-01), Tremblay et al.
patent: 6102648 (2000-08-01), Fretwell et al.
patent: 6238169 (2001-05-01), Dupuy et al.
patent: 33 43 724 (1984-06-01), None
patent: 3739 267 (1989-06-01), None
patent: 0 774 243 (1997-05-01), None
patent: WO 94/27546 (1994-04-01), None
Budd Alfred L.
Dupuy James Robert
Pierrou James R.
Wolff Barry E.
Brahan Thomas J.
Michael & Best & Friedrich LLP
The Braun Corporation
LandOfFree
Dual function inboard barrier/bridgeplate assembly for... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Dual function inboard barrier/bridgeplate assembly for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dual function inboard barrier/bridgeplate assembly for... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3850952