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US 5,490,700 AGranted
Sheet metal U.L. screw
AssigneeEmhart Inc.
InventorMartin Zuckerman
Life of this patent
Estimating the term…
Abstract
A tubular lock assembly which is to be located within a suitable thru bore in a door comprising: a pair of rose liner assemblies each including a rose liner, a collar selectively sized to effectively close the thru bore of the door, and means for securing the collar on the rose liner. Means for securing the rose liner assemblies together on either side of the door with the collars effectively closing the door thru bore, the securing means including a screw interconnecting the collars.
Claims4
A tubular lock assembly which is to be located within a suitable thru bore in a door comprising:
- a pair of rose liner assemblies each including
- a rose liner
- a steel collar selectively sized to effectively close the thru bore of the door, and
- means for securing said collar on said rose liner,
- fastener means for securing said rose liner assemblies together on either side of the door with said collars effectively closing the door thru bore,
- coaxial holes in one of said rose liners and in each of said steel collars and
- a self tapping screw extending through said hole in said one rose liner and through said holes in said steel collars,
- said steel collar holes being selectively sized so that said self tapping screw will define a screw thread therein during insertion to permanently maintain said steel collars closing the door thru bore.
5 more elements
Dependencies are inferred from the claim text.