US3681987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air actuated ski speedometer
Assignee: Individual
•
Filing: 1970-08-21
•
Granted: 1972-08-08
•
Expires: 1990-08-21
Abstract
Abstract A ski speedometer for registering the highest speed attained by a skier during a predetermined ski run. The ski speedometer employs a tube having an air inlet and a spring pressed plate actuated by air passing into the tube. An indicator is attached to the plate and positioned outwardly of the tube for cooperating with indicia on the tube for providing a direct readout of the actual highest speed attained by the skier, until the ski speedometer has been reset.
Inventors
- 👤 Asa P Ruskin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:43
CPC Classifications
G; G01; G01P; G01P5/00; G01P5/02; G01P1/00; G01P1/07; G01P1/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
178 words
A ski speedometer for registering the highest speed attained by a skier during a predetermined period comprising a tube, said tube having an open end forming an air intake, a plate disposed in said tube, guide means on said tube, and said plate for movably mounting said plate formotion along a constrained path within said tube, spring means in said tube engaging said plate for resisting move-ment of said plate, indicia on said tube, indicator means carried by said plate and extending outwardly of said tube cooperating with said indicia to visually indicate amount of movement of said plate, means for retaining said plate in a position corresponding to the furthest movement from an initial position attained, and securing means attached to said tube for attaching said tube to a garment of the user in an attitude for directing air into said tube corresponding to the speed of the user, said means for retaining including a toothed slot in said tube, a pin on said plate, said pin extending into said slot and being engageable with said teeth.
Claim 2
Dependent Claim
178 words
A ski speedometer for registering the highest speed attained by a skier during a predetermined period comprising a tube, said tube having an open end forming an air intake, a plate disposed in said tube, guide means on said tube, and said plate for movably mounting said plate formotion along a constrained path within said tube, spring means in said tube engaging said plate for resisting move-ment of said plate, indicia on said tube, indicator means carried by said plate and extending outwardly of said tube cooperating with said indicia to visually indicate amount of movement of said plate, means for retaining said plate in a position corresponding to the furthest movement from an initial position attained, and securing means attached to said tube for attaching said tube to a garment of the user in an attitude for directing air into said tube corresponding to the speed of the user, said means for retaining including a toothed slot in said tube, a pin on said plate, said pin extending into said slot and being engageable with said teeth.
Claim 3
Dependent Claim
15 words
A ski speedometer according to claim 1, wherein said slot extends longitudinally of said tube.
Claim 4
Dependent Claim
14 words
A ski speedometer according to claim 1, wherein said slot is arcuate in shape.
Claim 5
Dependent Claim
18 words
A ski speedometer according to claim 3, wherein said slot extends through an arc of substantially ninety degrees.
Claim 6
Dependent Claim
32 words
A ski speedometer according to claim 4, including a shaft journalled in said tube, said plate being mounted on said shaft and rotatable therewith, said spring means being wrapped about said shaft.
References Cited (Backward Citations)
US3564917A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |