Lock and alarm means lockable on window and door rail

• US 5,595,075 A
• Filed: 01/31/1995
• Issued: 01/21/1997
• Est. Priority Date: 01/31/1995
• Status: Expired due to Fees

• Current Assignee: Mike Chen
• Original Assignee: Mike Chen
• Inventors: Chen, Mike
• Primary Examiner(s): Gall, Lloyd A.
• Application Number:
  US08/381,345
• Time in Patent Office: 721 Days
• Field of Search: 70/19, 70/DIG. 49, 70/89, 70/90, 70/95, 70/14, 70/96, 70/97, 70/99, 292/258, 292/288, 292/DIG. 46, 340/545, 340/546
• US Class Current: 70/95
• CPC Class Codes: E05B 45/08 with contact making inside the lock or in the striking plate
• CPC Class Codes: E05B 65/0894 Portable or removable locks E05B65/0864, E05B65/0888 take precedence
• CPC Class Codes: Y10S 292/46 Sliding door fasteners
• CPC Class Codes: Y10S 70/49 with alarm
• CPC Class Codes: Y10T 292/34 Portable
• CPC Class Codes: Y10T 70/515 Sliding sash
• CPC Class Codes: Y10T 70/5173 Sliding door

Abstract

A lock and alarm device includes: a lock body held on a window and door rail at a lower position of the door or window for an easier concealment, a vise having two jaw members telescopically mounted in a bottom of the lock body to be firmly tensioned or retained on the rail as driven by a knob for retarding a sliding opening of the window and door, and an alarm mounted on the lock body and operatively actuated for sensitively detecting an unexpected opening of the window and door for enhancing security when the opening of the window or door triggers a touch-on switch of an alarm circuit, or when the vibrations caused by the opening of the window or door actuates a vibration sensor of the alarm circuit.

Claims

1. A lock and alarm means lockable on a window or door rail comprising:

a lock body having at least a side wall formed on a side portion of said lock body;

a vise means having two jaw members telescopically mounted on a bottom of said lock body to be movably held in a rail means of a window or door slidably held on the rail means along a rail axis of said rail means;

a driving means rotatably mounted on the lock body and operatively driving one of said two jaw members of said vise means for tightly retaining said two jaw members in said rail means to allow said side wall of said lock body to retard a side frame of the window or door for locking said window or door for preventing a sliding opening on said rail means; and

an alarm means mounted on said lock body for actuating an alarm sounding when said alarm means and said lock body are impacted by said window or door when intentionally opened by an intruder;

the improvement which comprises;

said lock body including;

a bottom having a sliding slot longitudinally formed in the bottom, an upper portion having a shaft hole formed in a central portion of the upper portion;

said vise means including;

a fixed jaw member protruding downwardly from a rear portion of the lock body to be contacted with a first rail wall of said rail means adjacent to an exterior of the window or door, a movable jaw member protruding downwardly from a sliding plate slidably reciprocatively held in the lock body to be extendibly retained on a second rail wall of the rail means adjacent to an interior and opposite to the fixed jaw member, and a plurality of rack teeth equally spaced and longitudinally formed on an upper surface of the sliding plate, with the movable jaw member having a neck portion formed under a bottom surface of the sliding plate to be slidably engaged with the sliding slot formed in the bottom of the lock body; and

said driving means operatively driving said movable jaw member in relation to said fixed jaw member to be locked in said rail means, said driving means including;

a knob secured to a shaft rotatably engageable with the shaft hole formed in the upper portion of the lock body and protruding upwardly from the upper portion of the lock body, a driving disk secured to the shaft and positioned below the upper portion of the lock body, and a spiral thread spirally formed on a bottom surface of the driving disk to be engageable with the rack teeth formed on the sliding plate of the movable jaw member, whereby upon rotation of the knob of the driving means, the sliding plate of the movable jaw member will be driven in a direction generally perpendicular to said rail axis of said rail means for firmly retaining the jaw members in said rail means.