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Vehicular abutment alarm apparatus

  • US 5,374,918 A
  • Filed: 12/10/1992
  • Issued: 12/20/1994
  • Est. Priority Date: 12/10/1992
  • Status: Expired due to Fees
First Claim
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1. A vehicular abutment alarm apparatus in combination with a vehicular trailer, wherein the trailer includes a trailer top wall spaced from a trailer front wall, and a vehicular cab arranged for mounting to the vehicular trailer, wherein the apparatus comprises,a mounting bracket means for adjustable mounting along the trailer front wall in adjacency to the trailer top wall, wherein the mounting bracket means includes a first switch, the apparatus further including a second switch, and a third switch each respectively mounted to the trailer top wall in a spaced relationship relative to one another and to the first switch,a receiver unit mounted within the vehicular cab in electrical communication with the first switch, the second switch, and the third switch, wherein individual engagement of the first switch, the second switch, and the third switch with an abutment effects actuation of the receiver unit,the receiver unit includes a receiver housing top wall having an on/off switch, a speaker member, and an illumination bulb, and batteries contained within the receiver unit, with the on/off switch, the speaker member, the illumination bulb arranged in electrical communication with the first switch, the second switch, and the third switch to include an electrical communication cable in electrical communication between the receiver unit, the first switch, the second switch, and the third switch,said first switch, said second switch, and said third switch each include a switch housing, each switch housing having a switch housing top wall, with the electrical communication cable directed into each switch housing, wherein the electrical communication cable includes a first cable member and a second cable member, the first cable member directed to the switch housing top wall, wherein the switch housing top wall includes a metallic rigid rod directed therethrough in electrical communication with the first cable member, and a metallic first contact mounted to the switch housing top wall in electrical isolation relative to the rigid rod, with the metallic first contact in electrical communication with the second cable member, and the metallic first contact having a concave top wall, and a metallic second contact of a semi-spherical configuration positioned above the concave top wall having an annular contact edge spaced from and in adjacency to the contact top wall, wherein the metallic second contact having a concave bottom wall in confrontation to the concave top wall and the metallic second contact, including a polymeric spring interposed and captured between the metallic first contact and the metallic second contact, whereupon deflection of the rigid rod effects electrical communication between the first contact and the second contact.

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