Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
October 27, 2015
Patent Application Number
13925436
Date Filed
June 24, 2013
Patent Citations Received
Patent Primary Examiner
Patent abstract
According to one embodiment, an extension apparatus includes, a housing, a hook portion, a switch portion, a mechanical portion which moves the hook portion between the engaged state and the disengaged state, a pin portion provided inside the switch portion, a first spring portion interposed between the housing and the pin portion, an abutting portion provided in the mechanical portion, abutting a distal end of the pin portion, and releasing abutment when the pushing amount of the switch portion exceeds a predetermined amount, and a second spring portion striking the distal end of the pin portion against a sound-producing portion when abutment of the distal end of the pin portion is released.
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