×

Travel burglar/smoke alarm

  • US 4,484,181 A
  • Filed: 04/19/1982
  • Issued: 11/20/1984
  • Est. Priority Date: 04/19/1982
  • Status: Expired due to Fees
First Claim
Patent Images

1. A portable alarm apparatus, comprising:

  • a housing having a power supply and mountable to a door;

    a lever pivotably mounted about said housing and biased against a door jamb when said housing is mounted to said door;

    a switch carried by said housing and actuated by pivotable movement of said lever when said door is moved from said door jamb;

    smoke detection means carried by said housing;

    alarm means carried by said housing for signalling movement of said door away from said door jamb and the presence of smoke; and

    a dual purpose detection circuit carried by said housing and operatively connected to said power supply, said detection circuit having first and second integrated circuits, said first integrated circuit connected to said second integrated circuit and said switch for enabling said second integrated circuit to activate said alarm when said switch is actuated by said lever movement and enabled said first integrated circuit, and said second integrated circuit connected to said smoke detection means and activating said alarm when said smoke detection means is actuated and enables said second integrated circuit.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×