Camlock
OwnerRobert B. Ayrestinventor
Life of this patent
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Abstract
An all-plastic, tumbler-free cam lock includes a cylindrical lock body with a flange extending radially from the distal end to be glued to a surface surrounding a mounting hole. The lock body has a bore extending axially and a central spindle received coaxially in the bore. A key has a cylindrical tubular key body insertable concentrically between the lock body shoulder and the distal end of the spindle. A pair of outer key lugs extend radially outwardly from the tubular key body to pass through the key channels of an interior shoulder of the lock body, thus permitting access only by one key configuration. A third key lug extends radially inwardly from the inner surface of the tubular key body to engage a keyway channel of the spindle.
Claims21
A tumbler-free cam lock for securing a moving closure with respect to a fixed frame, including:
- a lock body having a bore extending along an axis therethrough, and an interior shoulder disposed at a distal end of said bore and extending radially inwardly to define a narrow distal opening;
- at least one key channel extending through said interior shoulder parallel to said axis;
- a central spindle extending axially in said bore in rotatable fashion, said spindle including a distal portion extending axially and distally and configured to be received within said narrow distal opening and define an annular gap therebetween;
- a key having a tubular key body dimensioned to be received in said annular gap, said key including at least one outer key lug extending radially outwardly therefrom and positioned to slidably extend through said at least one key channel;
- further including a semi-helix split washer locking device extending about said distal portion of said spindle and disposed coaxially within said bore and said lock body.
Dependencies are inferred from the claim text.