Retractable cover for an opening having limited stacking space

Details Retractable cover for an opening having limited stacking space Retractable cover for an opening having limited stacking space

1987-10-16

1988-08-09

Hall, George T.

Receptacles

Leg or lap supported

With pail encircling band or ring

220345, B65D 4320

Patent

active

047622423

ABSTRACT:
A retractable cover for closing an opening in a substantially flat surface. The cover has particular application for closing the oil change pit in the floor of a vehicle service facility. The cover comprises a plurality of stacked flat members, each of the flat members being provided with a clasper for engaging the flat member which is stacked therebelow as well as a wheel for engaging a track for guiding the extension of flat members from a first, retracted position in which the flat members are stacked directly above each other to allow access to the opening to a second, extended position in which the flat members are stacked in staircase fashion to cover the opening. Each of the flat members is provided with a stop for engaging the flat member stacked therebelow to retain the flat members in engagement with each other when extended to the second position.

REFERENCES:
patent: 2223023 (1940-11-01), Weilemann
patent: 3295907 (1967-01-01), Galvin
patent: 4653662 (1987-03-01), Wise et al.

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