US3775575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switch for connecting window foil with a burglar alarm circuit
Assignee: Alarm Products International Inc
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Filing: 1972-06-30
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Granted: 1973-11-27
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Expires: 1992-06-30
Abstract
Abstract A foil window switch consists of two assemblies carrying respective elongated sliding contacts. One assembly is stationarily mounted and the other is mounted on a window or other access opening to a building, and terminals on the movable assembly are connected to a conventional conductive foil on the window. Movement of the window by some distance greater than a preset distance opens the connection between the sliding contacts to initiate an alarm. The assemblies are capable of top, bottom or side installation in the window.
Inventors
- 👤 P Parlato
- 👤 O Trasorras
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:23
CPC Classifications
G; G08; G08B; G08B13/00; G08B13/02; G08B13/08; H; H01; H01H; H01H3/00; H01H3/02; H01H3/16; H01H3/161
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
175 words
A burglar alarm switch for interconnecting window foil conductors with an alarm circuit comprising: a first switch member adapted to be mounted on a movable window; a second switch member adapted to be mounted on a fixed surface adjacent to the movable window; said first switch member comprising a first housing having an open side, first contact means supported within the housing and exposed through the open side thereof, and means to electrically connect said first contact means with the ends of a conductive foil carried on said movable window; said second switch member comprising a second housing having an open side, second contact means supported within the housing and exposed through the open side thereof, and means to electrically connect said second contact means with a burglar alarm circuit; said first and second contact means being constructed to engage so as to form a continuous circuit from said window foil to said burglar alarm circuit only when said open side of said first housing is contiguous with said open side of said second housing.
Claim 2
Dependent Claim
175 words
A burglar alarm switch for interconnecting window foil conductors with an alarm circuit comprising: a first switch member adapted to be mounted on a movable window; a second switch member adapted to be mounted on a fixed surface adjacent to the movable window; said first switch member comprising a first housing having an open side, first contact means supported within the housing and exposed through the open side thereof, and means to electrically connect said first contact means with the ends of a conductive foil carried on said movable window; said second switch member comprising a second housing having an open side, second contact means supported within the housing and exposed through the open side thereof, and means to electrically connect said second contact means with a burglar alarm circuit; said first and second contact means being constructed to engage so as to form a continuous circuit from said window foil to said burglar alarm circuit only when said open side of said first housing is contiguous with said open side of said second housing.
Claim 3
Dependent Claim
29 words
The switch of claim 1 wherein said open sides of said first and second housings are enclosed when said open sides of said housings are contiguous with one another.
Claim 4
Dependent Claim
23 words
The switch of claim 1 wherein said first and second contact means each comprise first and second contact members insulated from one another.
Claim 5
Dependent Claim
23 words
The switch of claim 2 wherein said first and second contact means each comprise first and second contact members insulated from one anohter.
Claim 6
Dependent Claim
46 words
The switch of claim 3 wherein said means to electrically connect said first contact means with said window foil comprises a first and second conductor connected to said first contact means and adapted to be connected to opposite ends of a gap in said conductive foil.
Claim 7
Dependent Claim
46 words
The switch of claim 4 wherein said means to electrically connect said first contact means with said window foil comprises a first and second conductor connected to said first contact means and adapted to be connected to opposite ends of a gap in said conductive foil.
Claim 8
Dependent Claim
30 words
The switch of claim 6 wherein each of said first and second contact means of said first and second housings consist of elongated contact members adapted for sliding contact engagement.
Claim 9
Dependent Claim
45 words
The switch of claim 6 wherein said first and second contact means of one of said first and second housings comprise spring-type contacts which produce contact pressure when engaging the said first and second contact means of the other of said first and second housings.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |