Back to results
US 4,662,594 AGranted
Tray for use with ladders
OwnerRonald Dubisinventor
Life of this patent
Estimating the term…
Abstract
A tray for use with ladders having hollow rungs opening to the side is disclosed, with the device being supported by a resilient member which is inserted into the rung and expanded against the inside of the rung by applying a compression force to the ends of the member, which holds the device firmly in place. The particular means for expanding the member disclosed herein uses the resilient characteristic of the member to "lock" the device in place.
Claims3
A ladder tray, comprising:
- a. a member shaped so as to be capable of placement within a hollow ladder rung, and which expands about its circumference in response to compression by pressure being applied to each end thereof;
- b. a bar slideably running through said member and being relatively large on one end thereof so as to apply pressure to said member upon said large end of said bar being pulled against said member;
- c. a handle pivotally attached to said bar opposite said relatively large end, so that upon pivoting said handle said bar slides and pulls said relatively large end toward said member so as to compress said member;
- d. a brace located between said member and said handle through which said bar is slideably located;
- e. a roller rotatably mounted on said handle contacting said brace upon said handle being pivoted, facilitating pivoting of said handle, and causing said handle to to be held in place after being fully rotated by a force exerted upon said handle and said roller by said member under compression;
- and
- f. a tray attached to said brace.
4 more elements
Dependencies are inferred from the claim text.