Pendant with an alarm built in

• US 4,158,197 A
• Filed: 10/21/1977
• Issued: 06/12/1979
• Est. Priority Date: 10/21/1977
• Status: Expired due to Term

• Current Assignee: Mitsuhiro Takagaki
• Original Assignee: Mitsuhiro Takagaki
• Inventors: Takagaki, Mitsuhiro
• Primary Examiner(s): Swann, III, Glen R.
• Application Number:
  US05/844,158
• Time in Patent Office: 599 Days
• Field of Search: 340/283, 340/277, 340/220, 340/279, 340/321
• US Class Current: 340/574
• CPC Class Codes: G08B 13/00 Burglar, theft or intruder alarms
• CPC Class Codes: G08B 15/004 using portable personal devices hand-held or body-worn self-defence devices using repellent gases or chemicals F41H9/10

Abstract

The body of a pendant is of hollow construction to accommodate therein a battery, a buzzer etc. to form an electric circuit. A pair of normally closed contact elements is included, as one element, in the electric circuit; the contact elements ordinarily receiving therebetween an insulating insertion member to break the electric circuit. The insulating insertion member is designed to be detachably inserted through an opening provided in the upper end of the pendant body, the insertion member having a projection to connect the pendant body to a chain.

Claims

1. A pendant with an alarm built in, comprising a pendant body of hollow construction having an opening at its upper end;

a buzzer and a battery installed within the hollow space of said pendant body;

a pair of contact elements to constitute an electric circuit in association with said buzzer and said battery, one of said elements being resilient and tending to contact the other element and being provided with a convexity;

an insulating insertion member provided with a concavity to accommodate said convexity of said one contact element, one end of which constitutes a connecting means to connect said pendant body to a chain, the insulating insertion member being designed to be inserted through said opening of said pendant body between said pair of contact elements and be held in the position by the cooperative engagement between said concavity of said insertion member and said convexity of said one resilient contact element.

2. A pendant with an alarm built in as claimed in claim 1, wherein a pushbutton inspection mechanism is installed in one wall of said pendant body to allow the user to test, without pulling out said insertion member, if the electric circuit is in normal condition to properly operate the buzzer.

3. A pendant with an alarm built in as claimed in claim 1, wherein a sound emitting hole is provided in one wall of said pendant body to emit the sound generated by the buzzer.