Chess clock
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United States of America Patent
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N/A
Issued Date -
Feb 26, 2004
app pub date -
Aug 5, 2003
filing date -
Apr 9, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention concerns a chess clock comprising a first clockwork mechanism (1) driven by its own quartz module (10), and a second mechanism (1') likewise driven by its own quartz module (10'), powered by a common power source (14) on the terminals whereof they are mounted in parallel. The driving means of said clockwork mechanisms (1, 1') consist of two switches (18, 18') placed each on one of the electric circuits (15, 15') powering said mechanisms (1, 1'). The two switches (18, 18') comprise each a contact switch system (19, 19') for opening or closing the corresponding electrical circuit (15, 15'), and an operating member (20, 20'). Said operating members (20 and 20') are arranged each at the end of an articulated arm (21), forming a balance.
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