System for indicating operation time of motor vehicles and the like
First Claim
1. A system for informing a driver of a vehicle of elapsed driving time, said system comprising:
- means for detecting starting and stopping of the driving of the vehicle;
a first timer for counting a limit driving time period;
first electric circuit means connecting said detecting means to said first timer, causing the first timer to start operating to count driving time in response to detection of the starting of the driving of the vehicle by said detecting means;
a second timer for counting a rest time period;
second electric circuit means connecting said detecting means to said second timer, causing the second timer to start operating to count rest time in respect to detection of stopping of driving of the vehicle by said detecting means;
warning means for generating and emitting a warning;
third electric circuit means connecting said first timer to said warning means, causing the warning means to generate and emit a warning in respect to completion of the counting of said limit driving time period by said first timer;
fourth electric circuit means connecting said second timer to said warning means, causing the warning means to become inoperative in response to completion of the counting of said rest time period by said second timer; and
fifth electric circuit means connecting said detecting means to said first and second timers permitting the counting operation of the first timer to continue and causing the counting operation of the second timer to be nullified in response to detection, by said detecting means, of restarting of the driving of the vehicle before completion of the counting of said rest time period by the second timer.
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Accused Products
Abstract
The driver of a vehicle is informed that he has driven continuously for a present limit driving time and thus should rest for a preset rest period by a system comprising: a first timer for setting the limit driving time and starting to operate upon detecting that the vehicle driving has started; a second timer for setting the rest period and starting to operate upon detecting stopping of driving; warning means for emitting a warning upon detecting that the set limit driving time has been counted after start of the first timer operation; means for rendering the warning means inoperative upon detecting that the set rest period has been counted after start of the second timer operation; and means for causing the operation of the first timer to continue when the vehicle driving is restarted before completion of counting of the set rest period after start of the second timer operation.
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Citations
20 Claims
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1. A system for informing a driver of a vehicle of elapsed driving time, said system comprising:
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means for detecting starting and stopping of the driving of the vehicle; a first timer for counting a limit driving time period; first electric circuit means connecting said detecting means to said first timer, causing the first timer to start operating to count driving time in response to detection of the starting of the driving of the vehicle by said detecting means; a second timer for counting a rest time period; second electric circuit means connecting said detecting means to said second timer, causing the second timer to start operating to count rest time in respect to detection of stopping of driving of the vehicle by said detecting means; warning means for generating and emitting a warning; third electric circuit means connecting said first timer to said warning means, causing the warning means to generate and emit a warning in respect to completion of the counting of said limit driving time period by said first timer; fourth electric circuit means connecting said second timer to said warning means, causing the warning means to become inoperative in response to completion of the counting of said rest time period by said second timer; and
fifth electric circuit means connecting said detecting means to said first and second timers permitting the counting operation of the first timer to continue and causing the counting operation of the second timer to be nullified in response to detection, by said detecting means, of restarting of the driving of the vehicle before completion of the counting of said rest time period by the second timer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for informing the driver of a vehicle of driving time, said system comprising:
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means for detecting starting and stopping of the driving of the vehicle, said means including an electric switch adapted to be closed or opened when vehicle driving is to be started or stopped, respectively; a first timer for counting a limit driving time period in response to detection of starting of the driving of the vehicle; a second timer for counting a rest time period in response to detection of stopping of the driving of the vehicle; a warning means for generating and emitting a warning; a first electric relay connected in series to said electric switch; a second electric relay; an electric power source, said first timer, second timer, warning device, first relay and second relay being connected in parallel with respect to said electric power source; a normally-open electric contact of the first relay, connected in series to said first timer; a normally-closed electric contact of the first relay, connected in series to said second timer; a first normally-open electric contact of the second relay, connected in series to said second relay; a second normally-open electric contact of the second relay, connected in series to said second timer; a normally-open time limit electric contact of said first timer connected in series to said warning means; a normally-closed time limit electric contact of said second timer, connected in series to said first timer and said normally-open electric contact of the first relay and in series to said second relay and its first normally-open electric contact; and electric circuit means connecting the circuit of said first timer and said normally-open electric contact of the first relay and the circuit of said second relay and said first normally-open electric contact of the second relay in such a manner that the first timer and the first normally-open electric contact of the second relay are connected in series and that the second relay and the normally-open electric contact of the first relay are also connected in series.
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11. A system for informing a driver of a vehicle of elapsed driving time, said system comprising:
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means for detecting starting and stopping of an engine of the vehicle; a first timer for counting a limit driving time period; first electric circuit means connecting said detecting means to said first timer, causing the first timer to start operating to count driving time in response to detection of the starting of the engine of the vehicle by said detecting means; a second timer for counting a rest time period; second electric circuit means connecting said detecting means to said second timer, causing the second timer to start operating to count rest time in respect to detection of stopping of the engine of the vehicle by said detecting means; warning means for generating and emitting a warning;
third electric circuit means connecting said first timer to said warning means, causing the warning means to generate and emit a warning in respect to completion of the counting of said limit driving time period by said first timer;fourth electric circuit means connecting said second timer to said warning means, causing the warning means to become imperative in response to completion of the counting of said rest time period by said second timer, and fifth electric circuit means connecting said detecting means to said first and second timers permitting the counting operation of the first timer to continue and causing the counting operation of the second timer to be nullified in response to detection, by said detecting means, of restarting of the engine of the vheicle before completion of the counting of said rest time period by the second timer. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A system for informing the driver of a vehicle of driving time, said system comprising:
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means for detecting starting and stopping of an engine of the vehicle, said means including an electric switch adapted to be closed or opened when the engine is to be started or stopped, respectively; a first timer for counting a limit driving time period in response to detection of starting of the engine of the vehicle; a second timer for counting a rest time period in response to detection of stopping of the engine of the vheicle; a warning means for generating and emitting a warning; a first electric relay connected in series to said electric switch; a second electric relay; an electric power source, said first timer, second timer, warning device, first relay and second relay being connected in parallel with respect to said electric power source; a normally-open electric contact of the first relay connected in series to said first timer; a normally-closed electric contact of the first relay connected in series to said second timer; a first normally-open electric contact of the second relay connected in series to said second relay; a second normally-open electric contact of the second relay connected in series to said second timer; a normally-open time limit electric contact of said first timer connected in series to said warning means; a normally-closed time limit electric contact of said second timer, connected in series to said first timer and said normally-open electic contact of the first relay and in series to said second relay and its first normally-open electric contact; and electric circuit means connecting the circuit of said first timer and said normally-open electric contact of the first relay and the circuit of said second relay and said first normally-open electric contact of the second relay in such a manner that the first timer and the first-normally-open electric conctact of the second relay are connected in series and that the second relay and the normally-open electric contact of the first relay are also connected in series.
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Specification