Detector coupling mechanism
AssigneeHochiki Corporation
InventorsHiroyuki Kitta, Shinichi Aizawa, Hiroshi Sawa
Life of this patent
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Abstract
A fire detector comprising a socket and a detector head with an electric circuit therein. The socket is provided with couplings for voluntarily defining the structure of an engaging portion thereof to designate a detector head to be coupled and each engaging portion of the detector heads have a specific structure to engage with the engaging portion defined by the couplings. Hence, no detector head other than the designated detector head can be coupled to the socket plate.
Claims12
In a fire detector having a socket and a detector head with a fire detector and an electric circuit therein, and at least two different couplings on said socket associated with coupling various types of said detector heads to said socket, the improvement comprising;
- said socket provided with means for selectively defining an engaging portion structure for one designated detector head to be coupled to said socket and precluding coupling other detector heads and each engaging portion of said various type of detector heads having specific structure to engage with a particular engaging portion defined by said means, whereby no detector head other than the designated detector head can be coupled to said socket plate.
Dependencies are inferred from the claim text.