US2997089A

US2997089A - Door knob cover

Info

Publication number: US2997089A
Application number: US73416A
Authority: US
Inventors: Charles J Amdur; Edward J Weinstein
Original assignee: Individual
Current assignee: Individual
Priority date: 1960-12-02
Filing date: 1960-12-02
Publication date: 1961-08-22
Anticipated expiration: 1978-08-22

Description

g- 1961 c. J. AMDUR ET AL 2,997,089

DOOR KNOB COVER Filed Dec. 2, 1960 Mr," M, 1,7

INVENTOR CHARLES J. AMDUR EDWARD J WEINSTEIN United States Patent 2,997,089 DOOR KNOB COVER Charles J. Amdur, 2312 Ponce de Leon Blvd., and Edward J. Weinstein, 217 Aragon Ave., both of Coral Gables, Fla.

Filed Dec. 2, 1960, Ser. No. 73,416 2 Claims. (Cl. 150-52) This article of manufacture relates in general to hardware devices and more particularly to ornamental covers for door knobs.

Door knob covers prior to this invention were generally intended for bumpers and are usually retained on the knobs by unsightly fastening means such as lacings.

The present invention overcomes the above disadvantage in utility and provides an ornamental cover which may be readily attached to existing door knobs by manual manipulation without unsightly fasteners. Reference is had to applicants pending U.S. application Serial No. 25,706.

A principal object of this invention is the provision 'of an ornamental door knob cover which consists of a rear and outer member for covering the inward and outward surfaces of the knob by means of an adjustable closure.

Another object of the invention is a provision of an ornamental door knob cover adapted to be threaded together over existing knobs with resilient means therein for adapting the cover to knobs of various widths.

These and other objects and advantages in one embodiment of this invention are described and shown in the following specification and drawing in which:

FIG. 1 is a fragmentary perspective portion of a door showing a door knob with a detachable cover thereon.

-FIG. 2 is an enlarged perspective in view of the cover shown in FIG. 1.

FIG. 3 is a cross section elevation taken through section line 3--3, FIG. 1.

\FIG. 4 is an inside elevation of the rear member of the cover shown in FIGS. 2 and 3.

Referring to FIG. 1, a portion of -a door with a conventional door knob is shown with a cover assembly 2 secured on the outer surface thereof.

FIGURE 2 shows the cover detached from the knob and comprising an inner member 3 and an outer member 4. Both portions of the cover are preferably made from molded plastic material such as polyethylene, acrylate, butyrate or rubber, or other like compounds, which compounds are preferably made with sufficient rigidity to insure proper frictional holding engagement of the threaded portions.

The inner member 3 is provided with male threads about its outer periphery and the outer member 4 is provided with mating female threads 5 about the inner periphery thereof. Better shown in FIG. 3.

Three resilient pads 6 are shown secured by cement to the inner surface of member 3 and are preferably made from resilient material such as foam or sponge rubber.

It is now apparent that when the cover members are threaded together on a door knob the two portions 3 and 4 are manually secured by rotating the outer member and holding member 3 with the pads 6 urged against the rear surface of the knob until the cover is snugly secured on the knob. Differences in width of various knobs is thus readily compensated by the compression of the pads 6 which also serve the dual purpose of providing a high degree of friction against the outer surfaces of the knob preventing slippage of the cover when the knob is operated.

It is now also apparent that a metal spring washer of the wavy or finger type may be substituted for the pads 6 to accomplish the desired compensation for accommodating a cover of one size on door knobs of various widths.

It is understood that certain modifications using the features above described are intended to come within the scope of the appended claims.

Having described our invention, we claim:

1. An ornamental cover for a door knob comprising an inner member of pre-determined thickness shaped to cover the inward radial portions of said knob in spaced relation to the inner surface thereof and terminating in a threaded portion positioned around the outer periphery of said knob, an outer cover member of pre-determined thickness shaped to substantially conform to the outer portion of said knob in close relation to the outward surface thereof and terminating in a threaded portion in mating engagement with the said threaded portion of said inner member, resilient means positioned between the inner surface of said inner member and the said inward surface of said knob for urging said outer member into frictional engagement with the said outward surface of said knob.

2. An ornamental cover for a door knob comprising an inner member of pre-determined thickness shaped to cover the inward radial portions of said knob in spaced relation to the inner surface thereof and terminating in a threaded portion positioned around the outer periphery of said knob, an outer cover member of pre-determined thickness shaped to substantially conform to the outer portion of said knob in close relation to the outward surface thereof and terminating in a threaded portion in mating engagement with the said threaded portion of said inner member, a plurality of resilient pads secured to the inner surface of said inner member and bearing against the said inward surface of said knob for urging said outer member into frictional engagement with said outward surface of said knob.

Nebe et a1 Jan. 18, 1955 Pitrella Oct. 25, 1955