US3636320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonreversible odometer
Assignee: Ford Motor Co
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Filing: 1970-07-23
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Granted: 1972-01-18
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Expires: 1990-07-23
Abstract
Abstract A nonreversible odometer for a driven vehicle includes a plurality of driven number wheels which display the total distance traveled by the vehicle. The gear train of the odometer is designed so that an input thereto which increases the total indicated travel of the vehicle is transmitted through the gear train to increase the travel distance displayed on the number wheels. On the other hand, if the input to the odometer is one which would decrease the total displayed travel of the vehicle, the drive between the input shaft and the number wheels is interrupted and no decrease is effected.
Inventors
- 👤 George C Wallis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:41
CPC Classifications
G; G06; G06M; G06M1/00; G06M1/04; G06M1/06; G06M1/062
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
223 words
A nonreversible odometer for use in a vehicle to indicate the total distance traveled by the vehicle, which odometer comprises: a frame; an input shaft rotatably mounted in said frame, said shaft being driven by apparatus responsive to movement of the vehicle; a plurality of number wheels supported for rotation in said frame for displaying an indication of the distance traveled by the vehicle; gear drive means associated with said number wheels for rotatively driving said number wheels to vary the displayed indication of the distance traveled by the vehicle; gear train means supported by said frame for interconnecting said input shaft and said gear drive means so that rotation of said input shaft results in displacement of said number wheels, said gear train means including both a primary shaft and a drive gear rotatably mounted on said primary shaft, said drive gear being in driving engagement with said gear drive means associated with said number wheels and said primary shaft being driven when said input shaft is rotated; and interruptable drive means interconnecting said primary shaft and said drive gear mounted on said shaft for interrupting the driving connection between said two last mentioned elements when said primary shaft is driven by said input shaft in a direction which would reduce the total displayed travel indicated on said plurality of number wheels.
Claim 2
Dependent Claim
223 words
A nonreversible odometer for use in a vehicle to indicate the total distance traveled by the vehicle, which odometer comprises: a frame; an input shaft rotatably mounted in said frame, said shaft being driven by apparatus responsive to movement of the vehicle; a plurality of number wheels supported for rotation in said frame for displaying an indication of the distance traveled by the vehicle; gear drive means associated with said number wheels for rotatively driving said number wheels to vary the displayed indication of the distance traveled by the vehicle; gear train means supported by said frame for interconnecting said input shaft and said gear drive means so that rotation of said input shaft results in displacement of said number wheels, said gear train means including both a primary shaft and a drive gear rotatably mounted on said primary shaft, said drive gear being in driving engagement with said gear drive means associated with said number wheels and said primary shaft being driven when said input shaft is rotated; and interruptable drive means interconnecting said primary shaft and said drive gear mounted on said shaft for interrupting the driving connection between said two last mentioned elements when said primary shaft is driven by said input shaft in a direction which would reduce the total displayed travel indicated on said plurality of number wheels.
Claim 3
Dependent Claim
153 words
The nonreversible odometer as defined in claim 1 wherein: said interruptable drive means includes a ring encircling and keyed to said primary shaft for axial movement therealong, said ring having a sloping cam surface terminating in a dropoff facing said drive gear; a spring encircling said primary shaft and biasing said ring toward said drive gear; and a lug on said drive gear extending toward said ring, said lug both making driving contact with said dropoff of said ring when said primary shaft is rotated to increase the value of the display of said number wheels, and said lug moving over said cam surface of said ring and off said dropoff of said cam surface during rotation of said primary shaft in a direction opposite said direction causing an increase in the displayed distance of travel of the vehicle whereby said number wheels are not driven through said gear drive means associated therewith.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |