Security apparatus

• US 4,271,338 A
• Filed: 07/10/1979
• Issued: 06/02/1981
• Est. Priority Date: 07/10/1979
• Status: Expired due to Term

• Current Assignee: North American Philips Corp. (Koninklijke Philips N.V.)
• Original Assignee: North American Philips Corp. (Koninklijke Philips N.V.)
• Inventors: Rakocy, William J.
• Primary Examiner(s): Dobeck, B.
• Assistant Examiner(s): Ginsburg, Morris
• Application Number:
  US06/056,168
• Time in Patent Office: 693 Days
• Field of Search: 200/61.71, 200/61.93, 200/61.72, 200/61.73, 200/61.62, 200/61.81, 340/547, 340/541, 340/545, 335/205, 335/206, 335/207
• US Class Current: 200/61.71
• CPC Class Codes: G08B 13/08 by opening, e.g. of door, of window, of drawer, of shutter, of curtain, of blind
• CPC Class Codes: H01H 3/161 for actuation by moving a closing member, e.g. door, cover or lid the switch controlling enclosed equipment H01H9/226; switches operated by a removable member, wherein one single insertion movement of a key comprises an unlocking stroke and a switch actuating stroke, e.g. security switch for safety guards H01H27/002
• CPC Class Codes: H01H 36/0046 Limit switches, also fail-safe operation or anti-tamper considerations

Abstract

A security device adapted for use with a slidable-type window or the like basically comprises a two-part electrical contact switch, one switch part being mounted on the molding surrounding the window frame and being electrically connectible to an alarm system, and the other switch part being slidably associated with a longitudinal bracket mounted on the window frame adjacent the first switch part. The window frame can be slid open or closed, without activation of the alarm system, by holding the two switch parts in electrical contact with each other.

Claims

1. Security apparatus adapted for use with a slidable-type window or the like, which comprises a two-part electrical contact switch, one of said switch parts being electrically connectible to an alarm system;

means to attach said one switch part to the molding surrounding a window frame;

a linearly extending bracket; and

means to attach said bracket on the window frame so that the bracket is adjacent said one switch part, said second switch part being mounted on said bracket so as to be slidable with respect thereto, whereby the window frame can be slid open or slid closed, without activation of the alarm system, by holding the two switch parts in electrical contact with each other.

2. Security apparatus according to claim 1, in which the switch comprises a two-part magnetic contact switch.

3. Security apparatus according to claim 1, in which the bracket is so attached to the window frame that, when the window frame is closed, one end of the bracket is opposite said one switch part.

4. Security apparatus according to claim 3, in which the bracket is vertically attached to the window frame.

5. Security apparatus according to claim 1, in which the bracket is formed with a U-shaped linearly extending channel for slidable contact by said second switch part.

6. Security apparatus according to claim 5, in which the bracket channel faces inwardly toward the window frame, a linearly extending slot being provided in the base of said channel, and in which an element is provided within the channel for association through said slot with said second switch part for slidable retention of the second switch part on the bracket.

7. Security apparatus according to claim 6, in which the second switch part is longitudinally shaped and is slidable on the outer surface of said channel, the element within the channel is longitudinally shaped and is slidable within said channel, and means is provided for slidably retaining said second switch part and said element together.

8. Security apparatus according to claim 7, in which said retaining means comprises at least a pair of apertures in said second switch part and at least a pair of corresponding projections on said element for protrusion through said slot into respective engagement with said apertures.

9. Security apparatus adapted for use with a closure comprising a panel-like element slidable with respect to a surrounding molding, which comprises a two-part electrical contact switch, one of said switch parts being electrically connectible to an alarm system;

means to mount said one switch part on said molding;

a longitudinally extending bracket; and

means to mount said bracket on the panel-like element so that the bracket is adjacent said one switch part, said second switch part being slidably associated with said bracket, whereby the panel-like element can be slid open or slid closed, without activation of the alarm system, by holding the two switch parts in electrical contact with each other.