Alarm apparatus for cabinets and the like

Claim 2

An alarm apparatus comprising a mounting plate, a generally enclosed housing having a base wall with an opening therein, hinge means pivotally interconnecting one edge of said base wall with one edge of said mounting plate, said base wall when disposed substantially parallel to said mounting plate defining an alarm ready position, a primary switch assembly and an alarm buzzer within said housing, a plunger assembly within said housing and including a plunger disposed to project through said base wall opening and a rocker lever pivotally mounted at its intermediate portion within said housing, said plunger extending away from one arm of said rocker lever, spring means urging said plunger outwardly of said housing and into engagement with said mounting plate when said base wall is in said alarm ready position, and said primary switch assembly including primary switch closing means for energizing said alarm buzzer disposed to be actuated by the other arm of said rocker lever upon outward movement of said plunger when said base wall is swung out of said alarm ready position away from said mounting plate.

Claim 3

An alarm apparatus comprising a mounting plate, a generally enclosed housing having a wall with an opening therein, hinge means pivotally interconnecting one end of said base wall with one edge of said mounting plate, said base wall when disposed substantially parallel to said mountIng plate defining an alarm ready position, a primary switch assembly and an alarm buzzer within said housing, a plunger assembly within said housing and including a plunger disposed to project through said base wall opening, spring means urging said plunger outwardly of said housing and into engagement with said mounting plate when said base wall is in said alarm ready position, said primary switch assembly including primary switch closing means for energizing said alarm buzzer disposed to be actuated by said plunger assembly upon outward movement of said plunger when said base wall is swung out of said alarm ready position away from said mounting plate, a secondary switch assembly within said housing, and said secondary switch assembly including secondary switch closing means for energizing said alarm buzzer disposed to be actuated by said plunger assembly upon inward movement of said plunger when said base wall is swung out of said alarm ready position toward said mounting plate.

Claim 4

An alarm apparatus comprising a mounting plate, a generally enclosed housing having a wall with an opening therein, hinge means pivotally interconnecting one end of said base wall with one edge of said mounting plate, said base wall when disposed substantially parallel to said mountIng plate defining an alarm ready position, a primary switch assembly and an alarm buzzer within said housing, a plunger assembly within said housing and including a plunger disposed to project through said base wall opening, spring means urging said plunger outwardly of said housing and into engagement with said mounting plate when said base wall is in said alarm ready position, said primary switch assembly including primary switch closing means for energizing said alarm buzzer disposed to be actuated by said plunger assembly upon outward movement of said plunger when said base wall is swung out of said alarm ready position away from said mounting plate, a secondary switch assembly within said housing, and said secondary switch assembly including secondary switch closing means for energizing said alarm buzzer disposed to be actuated by said plunger assembly upon inward movement of said plunger when said base wall is swung out of said alarm ready position toward said mounting plate.

Claim 5

An alarm apparatus as defined in claim 2, further comprising latch means carried by said mounting plate and engageable with said housing whereby the latter may be releasably latched to the former with said base wall disposed in said alarm ready position.

Claim 6

An alarm apparatus as defined in claim 3, further comprising resilient means secured to said base wall and being engageable with said mounting plate to yieldably space said base wall from said mounting plate in said alarm ready position.

Claim 7

An alarm apparatus as defined in claim 3, further comprising means for selectively deactivating at least said primary switch assembly.

Claim 8

An alarm apparatus as defined in claim 5, wherein said deactivating means includes a lock device having a lock cylinder mounted through a side wall of said housing and disposed adjacent said primary switch closing means, a lock arm mounted on the inner end of said lock cylinder and rotatable between two angular orientations with said lock arm engaging said primary switch closing means in one of said two angular orientations in a manner to prevent the actuation of said primary switch closing means.

Claim 9

An alarm apparatus as defined in claim 5, wherein said plunger assembly includes a rocker lever pivotally mounted at its intermediate portion within said housing, said plunger extends away from one arm of said rocker lever, and said primary switch closing means is disposed to be actuated by the other arm of said rocker lever upon said outward movement of said plunger; and wherein said secondary switch closing means includes a first electrical contact mounted on said one arm of said rocker lever, and a second electrical contact disposed to be contacted by said first electrical contact upon said inward movement of said plunger.