Digital chess clock
OwnerRobert J. Fischerinventor
Life of this patent
Estimating the term…
Abstract
A game timing apparatus and method for simultaneously timing events for two players is disclosed. The method involves presetting a pair of clocks for respective initial time periods, starting one of the clocks to time a first player's move, simultaneously stopping one clock and starting the other, and incrementing or decrementing each of the clocks by a time interval once for each move or a group of moves. The apparatus includes a pair of clock means, a pair of start switches for starting and stopping the clock means, and a compensation means for incrementing or decrementing each clock means by a time interval.
Claims20
A timing device for timing two events which comprises:
- a pair of clock means for timing two different events;
- compensation means coupled to said clock means for incrementing or decrementing each of said clock means;
- a pair of start switches coupled to said clock means, each of which starts one of said clock means for timing one event and simultaneously stops the other of said clock means to interrupt the timing of the other of the two different events;
- at least one of said start switches also being coupled to said compensation means for actuation of said compensation means;
- and
- display means coupled to said clock means for displaying the time for each of the two different events.
A chess clock for timing a competitive chess game comprising:
- a pair of clock means for timing each of the players of the chess game;
- a means coupled to said clock means for setting an initial time period for each of said clock means;
- a compensation means coupled to said clock means for incrementing each of said clock means;
- a means coupled to said compensation means for selecting the amount by which said clock means will be incremented by said compensation means;
- a pair of start switches coupled to said clock means, each of which starts one of said clock means for timing one of the players and simultaneously stops the other of said clock means to interrupt the timing of the other of the players;
- at least one of said start switches also being coupled to said compensation means for actuating said compensation means;
- alarm means coupled to said clock means for indicating the expiration of the time period for each of said clock means;
- and
- display means coupled to said clock means for displaying the time for each of the players.
A method of timing a two-player game comprising:
- presetting each of a pair of clock means for respective initial time periods;
- starting one of said clock means to time the first player's move;
- simultaneously stopping one of said clock means and starting the other of said clock means to time the second player's move;
- and
- incrementing or decrementing each of said clock means by a time interval once for each move or group of moves.
Dependencies are inferred from the claim text.