Door lifter construction

Details Door lifter construction Door lifter construction

1978-04-24

1979-05-22

Krizmanich, George H.

Miscellaneous hardware (e.g., bushing, carpet fastener, caster,

Panel hangers, travelers and/or tracks

Wheel mounts

49235, A47H 3302

Patent

active

041551451

ABSTRACT:
A door lifter mechanism for a railway car door is operable by a handle which acts on two fulcrum bars. A fulcrum bar lifter roller is carried by the handle and supports the ends of the fulcrum bars, which are joined by a pivot spool received in slots in the fulcrum bars.

REFERENCES:
patent: 2299297 (1942-10-01), Beauchamp
patent: 2335397 (1943-11-01), Ditchfield
patent: 2682075 (1954-06-01), Dietrichson
patent: 3998801 (1976-11-01), Hutchison
patent: 4112540 (1978-09-01), Wright et al.

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