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US 5,927,731 AGranted
Door trolley
OwnerJohn P. Clarkeinventor
Life of this patent
Estimating the term…
Abstract
A door supporting device comprising a low profile, compact, economically constructed frame made by bending a single flat piece of metal into four ninety degree bends; welding restricted to reinforcing of the ends, together with spot welding all threaded nuts to washers, and stems to rolling wheels; stabilizing said device by retracting its rolling wheels, allowing the entire width and length to make contact with the floor; and non-skid rubber on all contact points with the floor, to resist movement; desired movability and elevation of the door carrying service is adjustable.
Claims11
A door trolley comprising:
- a frame with a length and a width, said frame having a pocket for receiving a planer member such as a door or sheet of plywood, and wherein said pocket has a bottom with a width and generally vertically disposed sides;
- a plurality of retractable wheels connected to the frame via a pluralty of threaded shanks for lifting said frame up to allow the frame to roll over a surface on said wheels and for lowering the frame to rest on the surface;
- at least one non-slip bottom connected to said frame and extending to the widest points of said frame width for engaging a surface on which the frame placed when said wheels are retracted, and wherein said frame width extends beyond the threaded shanks;
- and
- a face plate retractably attached to one of the generally parallel vertically disposed sides for engaging a planer member when the plainer member is in said pocket.
2 more elements
A method for making a door trolley comprising:
- bending a single piece of metal into five planes with three planes being genrally horizontal and separated by two planes which are generally vertical;
- and
- connecting retractable wheels to two of the three generally horizontal planes.
Dependencies are inferred from the claim text.