Safety cover for a door knob
AssigneeReliance Products Ltd.
InventorAnthony Chrones
Life of this patent
Estimating the term…
Abstract
A safety cover for a door knob is designed to complicate the opening of the door by small children but permits the opening of the door by other persons by proper manipulation of the safety cover. A pair of inner and outer annular cover parts with interengaging fastening formations surround the shank and door knob. A resilient pressure pad is carried by the outer cover part between a flexible wall portion thereof and the front surface of the door knob. The safety cover when turned by a small child rotates freely on the door knob. When a sufficient force is applied to the flexible wall portion of the outer cover part, the resilient pressure pad is urged against the front surface of the door knob to frictionally grip same thus permitting the safety cover to turn the door knob.
Claims13
A safety cover for application to a door knob which is assembled on a door and designed to complicate the opening of the door by small children comprising a pair of inner and outer annular cover parts having a hollow interior, with the inner cover part having a shank engaging rim portion surrounding a centrally located opening therein and an annular ring-like portion terminating in an annular fastening formation, a slot extending through said rim portion and annular ring-like portion to permit the opening of said inner cover part for placement of the rim portion thereof around the shank of the door knob and said ring-like portion around and spaced from a portion of the door knob, said outer cover part including a cylindrical portion surrounding and spaced from the remaining portion of the door knob and having at one edge thereof an annular fastening formation for engaging and completely covering the fastening formation on said inner cover part, said engaged formations being hidden from view, the other edge of said cylindrical portion having a depending flexible wall portion which faces the front surface of the door knob and is provided with a centrally located opening therein, said flexible wall portion having inner and outer surfaces, a resiliently relatively thin pressure pad carried by said outer cover part and abutting the inner surface of said flexible plate portion for frictional engagement with the front surface of the door knob, said safety cover when turned rotating freely on the door knob and shank, said safety cover gripping the door knob and turning same when a sufficient force is applied to the outer surface of said flexible wall portion which urges said pressure pad against and into frictional engagement with the front surface of the door knob.
A safety cover for application to a door knob which is assembled on a door and designed to complicate the opening of a door by small children comprising a pair of inner and outer annular cover parts having a hollow interior, with the inner cover part having a shank engaging rim portion surrounding a centrally located opening therein and an annular ring-like portion terminating in an annular fastening formation, a slot extending through said rim portion and annular ring-like portion, said outer cover part including a cylindrical portion having at one edge thereof an annular fastening formation engaging and completely covering the fastening formation on said inner cover part, said engaged formations being hidden from view, the other edge of said cylindrical portion having a flexible wall portion extending transversely thereof and provided with a centrally located opening therein, said flexible wall portion having inner and outer surfaces, and a resilient relatively thin pressure pad carried by said outer cover part and abutting the inner surface of said flexible plate portion and adapted for frictional engagement with the front surface of a door knob.
Dependencies are inferred from the claim text.