Timed buzzer

Abstract

A timed buzzer assembly having a rectangular base with four terminals insert molded in the base and a generally cup-shaped cover member over the base providing the housing. All of the terminals project through the base member with the armature of the buzzer supported on one terminal and the coil assembly of the buzzer supported on a second terminal. For the purpose of timing the buzzer and also controlling a warning light, a bimetal timer is provided having bimetal elements one supported on a third terminal and the other supported on the above referred to second terminal. The fourth terminal is a ground to which a heating element for the bimetal timer is connected.

What is claimed is: 
     
       1. A timed buzzer, comprising; housing means, a coil assembly mounted in said housing means, an armature supporting member, a flexible armature connected to said armature supporting member, a contact carried by said armature, a contact member supported in said housing means and being positioned to be engageable with said armature contact, said armature being positioned so that the coil, when energized, will move the armature contact out of engagement with the contact member, first terminal means connected to said armature, said contact member being connected to one end of said coil assembly, second terminal means, said second terminal means being connected to the other end of the coil assembly, said armature having sound producing means thereon, a timer assembly mounted in said housing means, said timer assembly including first and second bimetal elements, third terminal means, .[.one of said elements.]. .Iadd.said first bimetal element .Iaddend.being connected to said third terminal means, one of said bimetal elements having heater means thereon, .[.another of said elements.]. .Iadd.said second bimetal element .Iaddend.being connected to said second terminal means, to provide a circuit to energize said coil assembly when said third terminal means is positive, fourth terminal means for grounding, said heater means being connected to both said third terminal means and said fourth terminal means so that the heater means heats the bimetal elements whenever said third terminal means is positive opening said bimetal elements after a predetermined time delay terminating operation of the sound producing means. 
     
     
       2. A timed buzzer as defined in claim 1, wherein; said housing means include a separate rectangular base member and said terminal means being insert molded in said base member. 
     
     
       3. A timed buzzer as defined in claim 2, wherein; said housing means includes a cup-shaped housing member over said base member. 
     
     
       4. A timed buzzer as defined in claim 1, wherein; said first, second, third and fourth terminal means are insert molded in said base member and have portions projecting completely through said base member. 
     
     
       5. A timed buzzer as defined in claim 4, wherein; said first terminal means projection supports said armature. 
     
     
       6. A timed buzzer as defined in claim 4, wherein; said second terminal means projection supports said coil assembly. 
     
     
       7. A timed buzzer as defined in claim 4, wherein; said second and third terminal means projections support said bimetal elements. 
     
     
       8. A timed buzzer, comprising; housing means, a coil assembly mounted in said housing means, an armature supporting member, a flexible armature connected to said armature supporting member, a contact carried by said armature, a contact member supported in said housing means and being positioned to be engageable with said armature contact, said armature being positioned so that the coil, when energized, will move the armature contact out of engagement with the contact member, first terminal means connected to said armature, said contact member being connected to one end of said coil assembly, second terminal means, said second terminal means being connected to the other end of the coil assembly, said armature having sound producing means thereon, a timer assembly mounted in said housing means, said timer assembly including first and second bimetal elements, third terminal means, .[.one of said elements.]. .Iadd.said first bimetal element .Iaddend.being connected to said third terminal means, one of said bimetal elements having heater means thereon, .[.another of said elements.]. .Iadd.said second bimetal element .Iaddend.being connected to said second terminal means, to provide a circuit to energize said coil assembly when said third terminal means is positive, fourth terminal means for grounding, said heater means being connected to both said third terminal means and said fourth terminal means so that the heater means heats the bimetal elements whenever said third terminal means is positive opening said bimetal elements after a predetermined time delay terminating operation of the sound producing means, a base member, said first, second, third and fourth terminal means being insert molded in said base member and having portions projecting completely through said base member, said first terminal means projection supporting said armature and said second terminal means projection supporting said coil assembly. 
     
     
       9. A timed buzzer, comprising; housing means, a coil assembly mounted in said housing means, an armature supporting member, a flexible armature connected to said armature supporting member, a contact carried by said armature, a contact member supported in said housing means and being positioned to be engageable with said armature contact, said armature being positioned so that the coil when energized will move the armature contact out of engagement with the contact member, first terminal means connected to said armature, said contact member being connected to one end of said coil assembly, second terminal means, said second terminal means being connected to the other end of the coil assembly, said armature having sound producing means thereon, a timer assembly mounted in said housing means, said timer assembly including first and second bimetal elements, third terminal means, .[.one of said elements.]. .Iadd.said first bimetal element .Iaddend.being connected to said third terminal means, one of said bimetal elements having heater means thereon, .[.another of said elements.]. .Iadd.said second bimetal element .Iaddend.being connected to said second terminal means, to provide a circuit to energize said coil assembly when said third terminal means is positive, fourth terminal means for grounding, said heater means being connected to both said third terminal means and said fourth terminal means so that the heater means heats the bimetal elements whenever said third terminal means is positive opening said bimetal elements after a predetermined time delay terminating operation of the sound producing means, a base member said first, second, third and fourth terminal means being insert molded in said base member and having portions projecting completely through said base member, said first terminal means projection supporting said armature and said second and third terminal means projections supporting said bimetal elements. 
     
     
       10. A timed buzzer, comprising; housing means, a coil assembly mounted in said housing means, an armature supporting member, a flexible armature connected to said armature supporting member, a contact carried by said armature, a contact member supported in said housing means and being positioned to be engageable with said armature contact, said armature being positioned so that the coil when energized will move the armature contact out of engagement with the contact member, first terminal means connected to said armature, said contact member being connected to one end of said coil assembly, second terminal means, said second terminal means being connected to the other end of the coil assembly, said armature having sound producing means thereon, a timer assembly mounted in said housing means, said timer assembly including first and second bimetal elements, third terminal means, .[.one of said elements.]. .Iadd.said first bimetal element .Iaddend.being connected to said third terminal means, one of said bimetal elements having heater means thereon, .[.another of said elements.]. .Iadd.said second bimetal element .Iaddend.being connected to said second terminal means, to provide a circuit to energize said coil assembly when said third terminal means is positive, fourth terminal means for grounding, electrical connections between said heater means and both said third terminal means and said fourth terminal means so that the heater means heats the bimetal elements whenever said third terminal means is positive opening said bimetal elements after a predetermined time delay terminating operation of the sound producing means, a base member, said first, second, third and fourth terminal means being insert molded in said base member and having portions projecting completely through said base member, said second terminal means projection supporting said coil assembly and said second and third terminal means projections supporting said bimetal elements. 
     
     
       11. A timed buzzer assembly, comprising; a housing having a generally rectangular plastic base, a cup-shaped cover over said base, first, second, third and fourth terminals aligned and insert molded in said base, each of said terminals having projecting portions in said housing, a buzzer assembly including a coil assembly supported on said second terminal, an armature supported on the first of said terminals in alignment with the coil assembly, a contact member insert molded in said base and projecting upwardly from said base adjacent said armature, bimetal elements supported on said second and third terminals and having engaging contacts therein, defining a circuit between said second and third terminals and between said first and third terminals through the buzzer assembly, a heater on one of said bimetal elements connected to said third and fourth terminals, said first terminal adapted to be connected to a normally closed seat belt switch, said second terminal being adapted to be connected to a warning light, said third terminal being adapted to be connected to a source of voltage, and said fourth terminal being adapted to be connected to ground.