Patent US4420033A successfully refreshed from Google Patents.
Patent US3733894A successfully refreshed from Google Patents.
US3733894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motorcycle dynamometer
Assignee: HARTZELL CORP
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Filing: 1972-02-11
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Granted: 1973-05-22
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Expires: 1992-02-11
Abstract
Abstract An apparatus for indicating the power output of a motorcycle or the like includes a box-like structure including means for clamping the front wheel in an upright plane while the rear of the motorcycle is free to swing about the steering axis. A barrel-shaped roller on a horizontal axis supports the driven wheel, the center of which is generally on the upright plane. As the motorcycle engine drives the driven wheel this wheel automatically centers with the roller. A dynamometer is driven by the roller.
Inventors
- 👤 C Dahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:33
CPC Classifications
G; G01; G01M; G01M17/00; G01M17/007; G01M17/0072; G01M17/0076
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
90 words
A device for supporting a tandem two wheeled vehicle in which the front wheel is pivotal relative to the rear portion thereof which includes the power supply and power driven wheel, the device including: a body portion, means on said body portion for holding the vehicle front wheel in an upright fixed position, a roller supporting the rear power driven wheel and arranged on an axis generally parallel to the axis of said driven wheel, said roller being generally barrel-shaped in outline, and a dynamometer device connected to said roller.
Claim 2
Independent Claim
90 words
A device for supporting a tandem two wheeled vehicle in which the front wheel is pivotal relative to the rear portion thereof which includes the power supply and power driven wheel, the device including: a body portion, means on said body portion for holding the vehicle front wheel in an upright fixed position, a roller supporting the rear power driven wheel and arranged on an axis generally parallel to the axis of said driven wheel, said roller being generally barrel-shaped in outline, and a dynamometer device connected to said roller.
Claim 3
Dependent Claim
24 words
The structure of claim 1 and in which said holding means includes a pair of members engageable with opposite sides of said front wheel.
Claim 4
Dependent Claim
17 words
The structure of claim 2 and in which at least one of said members is adjustably supported.
Claim 5
Dependent Claim
15 words
The structure of claim 2 and in which said members are generally L-shaped in outline.
Claim 6
Dependent Claim
21 words
The structure of claim 2 and including means pivotally supported between said members engageable with the periphery of said front wheel.
Claim 7
Dependent Claim
25 words
The structure of claim 1 and including a ramp connected to said body portion over which the vehicle may be directed onto said body portion.
Claim 8
Dependent Claim
21 words
The structure of claim 3 and in which said front wheel engaging means is adjustable laterally with respect to one another.
Claim 9
Dependent Claim
21 words
The structure of claim 3 and in which said front wheel engaging means is adjustable toward and away from said roller.
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) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |