Forced entry resistant check rail lock

Closure fasteners – Bolts – Swinging and camming

Patent

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Details

292106, E05C 304

Patent

active

052191931

ABSTRACT:
A check rail lock with a handle pivot shaft secured for pivotal movement with respect to the housing and a cam which pivots with the shaft between an open position with the cam enclosed in the housing and a locking position with the cam extending from the housing for grasping a keeper. An axially reciprocable locking member is associated with the pivot shaft for pivoting therewith, and has a manually engageable button end projecting above the housing and a locking end within the housing. The locking end has circumferentially spaced locking surfaces, and a spring biases the member locking end into engagement with the housing. First and second locking notches in the housing receive the member locking end when the cam and handle are in the open and locking positions, respectively, and the locking notches each have a surface engaging one of the locking end locking surfaces to prevent pivoting of the locking member and pivot shaft when the member locking end is received therein.

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Allen-Stevens Brochure for "Keyless Push Button Security Lock" 1 sheet; Sep. 1991 "Series 9600".
Truth Brochure for "Entrygard Sash Lock" (1991) pp. 11-11a 1 sheet; .COPYRGT.1991 cites U.S. Pat. No. 4,621,847.
Truth Brochure for "Non-Handed, Low Profile Sash Lock" (1991) pp. 12a-12b 12-12c cites U.S. Pat. No. 4,059,298; Canada No. 1,072,148.
Truth Brochure for "Sash Lock" (1991) pp. 13-13a.
Truth Brochure for "Concealed Casement Hardware-Lock" (1991) pp. 13.1; 13.1b; 13.1a.
Truth Brochure for "Entrygard Cam Lock" (1991) pp. 14-14a.
Truth Brochure for "Trimline Cam Lock" (1991) pp. 15-15a.
Truth Brochure for "Flush Mount Check Rail Lock" (1991) pp. 15.1-15.1A.
Truth Brochure for "Check-Rail Locks" (1991) pp. 16-16a.
Truth Brochure for "Low Profile Cam Lock" (1991) pp. 17-17a.
Truth Brochure for "Cam Lock" (1991) pp. 18-18a.
Truth Brochure for "Trimline Cam Lock" (1988) pp. 12; 12c; 12a; 12b.
Truth Brochure for "Locking Handle" (1988) pp. 14; 14e; 14a; 14b; 14c; 14d.
Truth Brochure for "Trimline Cam Handle Locks" (1988) pp. 15; 15c; 15a; 15b.
Truth Brochure for "Non-Handed, Low Profile Sash Lock" (1988) pp. 15-15a cites U.S. Pat. No. 4,059,298; Canada No. 1072148.
Truth Brochure for "Multi-Point Locking System" (1989) p. 20.1; 20.1e; 20.1a; 20.1b; 20.1c; 20.1d.

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