Detector system

• US 6,492,907 B1
• Filed: 09/01/2000
• Issued: 12/10/2002
• Est. Priority Date: 09/01/2000
• Status: Expired due to Fees

• Current Assignee: Robert E. Mccracken
• Original Assignee: Robert E. Mccracken
• Inventors: McCracken, Robert E.
• Primary Examiner(s): Lieu, Julie
• Application Number:
  US09/654,461
• Time in Patent Office: 830 Days
• Field of Search: 340/628, 340/693.5, 340/539, 340/693.6, 340/693.11
• US Class Current: 340/628
• CPC Class Codes: F21V 33/0076 Safety or security signalisation, e.g. smoke or burglar alarms, earthquake detectors; Self-defence devices
• CPC Class Codes: G08B 17/00 Fire alarms; Alarms responsive to explosion
• CPC Class Codes: G08B 17/113 Constructional details
• CPC Class Codes: G08B 29/181 due to failing power supply

Abstract

A smoke detector apparatus that provides a generally continuous supply of electrical power to a smoke detector unit. The apparatus provides flexibility in locating the detector unit while still generally maintaining uninterrupted access to electrical power. In various forms, the apparatus allows for mounting of a smoke detector unit remote from an electrical wall outlet. Generally uninterrupted power from the electrical system of a home or building to the smoke detector unit may be provided by way of an integral mounting plate, blocking member, and/or outlet covers.

Claims

1. An apparatus for providing uninterrupted power to a smoke detector unit via a wall outlet connected to an electrical system of a home or building, the apparatus comprising:

a small, portable housing of the smoke detector unit including electrical circuitry for receiving power to operate the smoke detector unit;

an elongated power supply line having spaced ends along its length for being connected to the electrical circuitry of the smoke detector unit at one end of the ends thereof;

an outlet cover plate integral with the power supply line at the other end thereof for being wall mounted over the outlet to maintain the power supply line thereto; and

plug blades carried by the cover plate for being inserted into the wall outlet to supply power from the electrical system to the smoke detector circuitry via the power supply line.

2. The apparatus of claim 1 wherein the outlet cover plate includes fastener through openings and fasteners for insertion through the through openings and securing the plate to the wall against unintentional removal therefrom.

3. The apparatus of claim 1 wherein the power supply line includes outer insulation of a polymer material, and the outlet cover plate is integrally molded of the same polymer material as the power supply line insulation.

4. The apparatus of claim 3 wherein the outlet cover plate is molded as a decorative face plate.

5. The apparatus of claim 1 wherein the smoke detector unit includes a light for indicating when power is provided to the electrical circuitry of the smoke detector unit by the electrical system.

6. The apparatus of claim 1 wherein the smoke detector unit includes splicing terminals for cutting through insulation at the one end of the power supply line for electrically connecting the power supply line to the electrical circuitry of the smoke detector unit.

7. The apparatus of claim 1 including a conduit adjustably sized to match the length of the power supply line for attaching a portion of the power supply line along the length thereof to a wall of the house or building.

8. The apparatus of claim 1 wherein the outlet cover plate includes an opening for access to the wall outlet.

9. The apparatus of claim 8 wherein the cover plate includes a blocking member movable to block the opening to prevent access to the wall outlet.

10. The apparatus of claim 1 wherein the smoke detector unit includes a power outlet connected with the electrical circuitry therein for providing power to an accessory.

11. The apparatus of claim 10 wherein the accessory includes a battery for providing back-up power supply to the smoke detector and a battery charger for recharging the battery.

12. The apparatus of claim 10 wherein the accessory includes on of the following accessories:

a clock for displaying time, a carbon monoxide detector for detecting carbon monoxide, or a light for providing illumination.

13. The apparatus of claim 10 wherein the accessory includes an accessory power outlet for receiving another accessory in electrical engagement.

14. An apparatus for providing uninterrupted power to a smoke detector unit via an electrical system in a home or building, the apparatus comprising:

a small, portable housing of the smoke detector unit including electrical circuitry for;

receiving power to operate the smoke detector unit;

a switch that controls supply of power from the electrical system operable by a user between on and off states thereof;

an intermediate conductive member for supplying power from the electrical system to the electrical circuitry of the smoke detector unit; and

a blocking member associated with the switch to substantially prevent user access thereto with the switch in the on state for maintaining uninterrupted power supply from the electrical system to the smoke detector unit and electrical circuitry therein, wherein the blocking member comprises a radio transmitter for sending radio signals including a fixture switch that controls the transmission of the radio signal for powering the female lightbulb socket of the smoke detector unit when the radio signal is received.

15. The apparatus of claim 14 wherein the intermediate conductive member includes a female lightbulb socket and the smoke detector unit has a male thread contact for insertion into the female lightbulb socket.

16. The apparatus of claim 14 wherein the blocking member includes a switch plate cover for mounting over a standard wall switch.

17. The apparatus of claim 14 wherein the housing of the smoke detector unit includes a female lightbulb socket for receiving electrical power from the electrical circuitry of the smoke detector unit.

18. The apparatus of claim 14 wherein the intermediate conductive member is a lamp with a bulb socket and a power supply line connected to the wall outlet, and the switch is disposed on the lamp for controlling the supply of power from the electrical system with the power supply line connected to the wall outlet.

19. The apparatus of claim 14 wherein the blocking member comprises a sheath of the housing that confines the switch to prevent user access thereto.