Support member for hatch-cover lift cylinders

Details Support member for hatch-cover lift cylinders Support member for hatch-cover lift cylinders

1978-04-27

1979-03-27

Downey, Kenneth

Movable or removable closures

With means mounting closure for swinging

With biasing means

E05F 110

Patent

active

041458435

ABSTRACT:
A cup-shaped support member for a lift-cylinder in a horizontal door structure, such as a hatchway, in which the lift-cylinder counter-balances the weight of the door. The base of the lift-cylinder is pressed against the bottom of the cup by its spring in the usual manner, and tilts about a flange on the foot as the door is swung open or closed. One or more clean-out holes are provided in the cup bottom, and an inturned lip is formed on the edge of the cup so that it overlaps the flange on the foot of the lift-cylinder. Foreign matter, such as dirt or ice, which heretofore has built-up under the foot of the lift-cylinder until the foot of the cylinder is lifted out of the cup, is forced through the clean-out holes in the support cup by engagement of the lip with the flange on the cylinder foot, preventing it from being lifted off the bottom of the cup while still allowing the cylinder to tilt freely.

REFERENCES:
patent: 933070 (1909-09-01), Gleason
patent: 2686340 (1954-08-01), Shepard et al.
patent: 3561162 (1971-02-01), Goldman

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