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 Title: |
US4392122:
Magnetically triggered on-board elapsed time indicator
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Hocken, Redvers A.; Stirchley, Birmingham, United Kingdom
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| Assignee: |
None
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| Published / Filed: |
1983-07-05
/ 1981-06-25
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| Application Number: |
US1981000277399
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| IPC Code: |
Advanced:
G01P 3/66;
G07C 1/24;
Core:
G01P 3/64;
G07C 1/00;
IPC-7:
G08B 21/00;
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| ECLA Code: |
G01P3/66; G07C1/24;
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| U.S. Class: |
Current:
340/323.R;
073/490;
324/179;
340/309.7;
340/309.8;
340/670;
346/018;
377/024.1;
Original:
340/323.R;
073/490;
324/179;
340/062;
340/309.15;
340/670;
346/018;
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| Field of Search: |
340/323 R,309.4,309.1,52 R,62,670
324/179,160
073/490
180/167,168,171
346/018
235/92 GA,92 TA
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| Priority Number: |
| 1980-06-26 |
GB1980000020899 |
| 1981-04-29 |
GB1981000013188 |
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| Abstract: |
A vehicle such as a speedboat or racing car is equipped with a magnetic sensing coil (22) for producing electrical signals in response to detection of magnets disposed at one or more positions along the course. In the case of buoy-mounted markers, the magnets (26) may be mounted on certain of the buoys (10,13,14,17). The output from the sensing coil (22) is used to control on-board timing circuitry to enable the average vehicle speed over the course to be determined and displayed.
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| Attorney, Agent or Firm: |
LeBlanc, Nolan, Shur & Nies ;
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| Primary / Asst. Examiners: |
Swann, III, Glen R.;
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| Maintenance Status: |
E2 Expired Check current status
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| INPADOC Legal Status: |
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Family Legal Status Report
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| Designated Country: |
AT BE CH DE FR IT LU NL SE
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| Family: |
Show 4 known family members
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First Claim:
Show all 17 claims |
I claim:
1. A system for on-board timing for a vehicle traversing a predetermined course, said system comprising sensing coil means adapted to be carried by the vehicle for producing an electrical signal in response to sensing at least one magnet located at at least one predetermined position along said course, on-board timing means and on-board control means responsive to said sensing coil means for controlling operation of the timing means to provide a record of the time interval elapsing between successive or selected electrical signals produced by said sensing coil means.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 12 U.S. patent(s) that reference this one
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