US4376276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door alarm with flexible switch actuator
Assignee: Individual
•
Filing: 1981-09-14
•
Granted: 1983-03-08
•
Expires: 2001-09-14
Abstract
Abstract The alarm mechanism is electrically operated and includes an electrical switch having an arm which projects beyond the alarm's housing. The arm is semi-rigid and flexible such that it may be engaged to actuate the switch yet will deflect to one side to permit passage of a door engaged therewith during opening. The housing is mounted on a wall immediately adjacent to the door with the arm extending along side the door. Upon opening the door, the arm is engaged thereby sounding the alarm. The housing is frictionally and rotationally mounted on the wall such that it may be swung to a position in which the arm is moved out of interfering or engageable relation with the door.
Inventors
- 👤 Jesse Barta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:18
CPC Classifications
G; G08; G08B; G08B13/00; G08B13/02; G08B13/08
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
88 words
A door alarm comprising a support, an electrical alarm device carried by said support and including an elongated actuating arm that projects laterally beyond said support, said arm being movable between two spaced positions for actuating and deactuating, respectively, said alarm, said arm having a degree of flexibility whereby transverse engagement therewith by a door will deflect it to one side while moving it between said positions, and means mounting said support on a stationary object for movement between and holding said support in arming and disarming positions.
Claim 2
Dependent Claim
88 words
A door alarm comprising a support, an electrical alarm device carried by said support and including an elongated actuating arm that projects laterally beyond said support, said arm being movable between two spaced positions for actuating and deactuating, respectively, said alarm, said arm having a degree of flexibility whereby transverse engagement therewith by a door will deflect it to one side while moving it between said positions, and means mounting said support on a stationary object for movement between and holding said support in arming and disarming positions.
Claim 3
Dependent Claim
17 words
The door alarm of claim 1 wherein said means includes a pivot pin centrally of said support.
Claim 4
Dependent Claim
28 words
The door alarm of claim 2 wherein said support includes a casing having a wall spaced from a plane including said arm, said pin passing through said wall.
Claim 5
Dependent Claim
29 words
The alarm of claim 3 wherein said means further includes two slip discs, said discs rotationally engaging opposite surfaces, respectively, of said wall, said pin passing through said discs.
Claim 6
Dependent Claim
44 words
The alarm of claim 4 wherein said pin is in the form of a screw having a head, one of said discs being cup shaped and formed of spring material and further being sandwiched between said head and the adjacent surface of said wall.
Claim 7
Dependent Claim
95 words
The alarm of claim 1 including in combination a wall having a door opening and a door hingedly mounted on said wall in registry with said opening, said support being mounted on said wall out of interferring relation with the operation of said door but with said arm extending alongside and in substantial parallelism with said door whereby said door operatively engages said arm during opening thereof, said means mounting said support on said wall such that said arming and disarming positions dispose said arm in and out of operative engageability, respectively, with said door.
Claim 8
Dependent Claim
29 words
The device of claim 6 including an element on said door normally disposed out of operative engagement with said arm but which engages the latter upon opening said door.
Claim 9
Dependent Claim
25 words
The device of claim 7 wherein said element is a bracket having an abutment spaced from said door but juxtaposed with respect to said arm.
Claim 10
Dependent Claim
37 words
The device of claim 7 wherein said bracket is "Z" shaped with one end flange secured to the door and the other end flange juxtaposed with respect to said arm, said abutment being said other end flange.
Claim 11
Dependent Claim
20 words
The device of claim 6 wherein said support is rotated to move it between said armed and said disarmed positions.
Claim 12
Dependent Claim
56 words
The device of claim 5 including an electrical switch connected to and operated by said arm, an electrically energizable horn and a battery connected in a series circuit, said arm when actuated serving to operate said switch which in turn connects said battery to said horn, said switch being of the single pole double throw type.
Claim 13
Dependent Claim
19 words
The device of claim 1 wherein said means includes a friction device which holds said support in adjusted position.
Claim 14
Dependent Claim
21 words
The device of claim 1 wherein said means includes a pin and slot device whereby said support can be moved rectilinearly.
Claim 15
Dependent Claim
33 words
The device of claim 13 wherein said support includes a housing having a rear wall said slot being in said rear wall, said arm extending generally in the same direction as said slot.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-03-07 | 1986-09-06 | 1987-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-07 | 1990-09-06 | 1991-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-07 | 1994-09-06 | 1995-03-08 | $7700.00 | Window Closed / Lapsed |