US 9,809,997 B2
Robert B. Ayrest, Placerville, CA (US)
Filed by Robert B. Ayrest, Placerville, CA (US)
Filed on May 7, 2015, as Appl. No. 14/706,306.
Application 14/706,306 is a continuation in part of application No. 13/889,215, filed on May 7, 2013, abandoned.
Prior Publication US 2015/0240520 A1, Aug. 27, 2015
Int. Cl. E05B 15/00 (2006.01); E05B 17/20 (2006.01); E05B 65/44 (2006.01); E05C 3/04 (2006.01); E05B 15/16 (2006.01); E05B 19/00 (2006.01); E05B 15/04 (2006.01)
CPC E05B 15/00 (2013.01) [E05B 15/1607 (2013.01); E05B 17/2019 (2013.01); E05B 19/0047 (2013.01); E05B 65/44 (2013.01); E05C 3/042 (2013.01); E05B 2015/0468 (2013.01); E05B 2015/1642 (2013.01); Y10T 70/7486 (2015.04)] 21 Claims
OG exemplary drawing
1. 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.