US3589193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ergometer
Assignee: Individual
•
Filing: 1969-07-24
•
Granted: 1971-06-29
•
Expires: 1989-07-24
Abstract
Abstract An electrical ergometer capable of imposing measurable work loads on the user''s muscles for medical and/or physical therapy purposes. The ergometer includes a torque motor with a plurality of controllable feedback loops for causing the motor to develop different types of easily adjustable forces as it is driven by the user.
Inventors
- 👤 William E Thornton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:36
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/22; A61B5/221
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
128 words
An electric ergometer for imposing measurable work loads on the muscles of a user, including: an electric motor having a drive shaft; circuit means for energizing said motor so as to cause said drive shaft to tend to rotate in a particular direction; manually operable means mechanically coupled to said drive shaft for rotating said drive shaft in the opposite direction; electric generating means coupled to said motor for generating an electric signal having a value related to the angular velocity of said drive shaft in said opposite direction; and electric feedback circuit means connected to said generating means and to said energizing circuit means for creating a force in said motor opposing such rotation in said opposite direction and which is a function of said angular velocity.
Claim 2
Dependent Claim
128 words
An electric ergometer for imposing measurable work loads on the muscles of a user, including: an electric motor having a drive shaft; circuit means for energizing said motor so as to cause said drive shaft to tend to rotate in a particular direction; manually operable means mechanically coupled to said drive shaft for rotating said drive shaft in the opposite direction; electric generating means coupled to said motor for generating an electric signal having a value related to the angular velocity of said drive shaft in said opposite direction; and electric feedback circuit means connected to said generating means and to said energizing circuit means for creating a force in said motor opposing such rotation in said opposite direction and which is a function of said angular velocity.
Claim 3
Dependent Claim
61 words
The electric ergometer defined in claim 1, and in which said electric feedback circuit means includes a network for differentiating the signal from said electric generating means so as to create an additional force in said motor opposing such rotation in said opposite direction and which is a function of the angular acceleration of the drive shaft in said opposite direction.
Claim 4
Dependent Claim
38 words
The electric ergometer defined in claim 1 and which includes a network for introducing a constant signal to said energizing circuit means for creating a constant additional force in said motor opposing such rotation in said opposite direction.
Claim 5
Dependent Claim
34 words
The electric ergometer defined in claim 3 and which includes adjustable potentiometers in said last-named network and in said feedback circuit means for setting the aforesaid forces created in said motor to predetermined values.
Claim 6
Dependent Claim
18 words
The electric ergometer defined in claim 1 in which said manually operable means includes a rotatable pedal assembly.
Claim 7
Dependent Claim
18 words
The electric ergometer defined in claim 1 in which said manually operable means includes a linearly movable assembly.
Claim 8
Dependent Claim
46 words
The electric ergometer defined in claim 1 in which said manually operable means includes means developing an electric signal representative of the force exerted on said manually operable means; and circuitry coupled to said last-named means for developing an electric instrumentation signal indicative of said force.
Claim 9
Dependent Claim
32 words
The combination defined in claim 7 in which said circuitry includes a network coupled to said electric generating means for developing further instrumentation signals indicative of the work performed by the user.
Claim 10
Dependent Claim
30 words
The electric ergometer defined in claim 1 and which includes cirCuitry coupled to said electric generating means for developing instrumentation signals representative of the angular velocity of said drive shaft.
Claim 11
Dependent Claim
25 words
The combination defined in claim 9 in which said last-named circuitry further develops an instrumentation signal representative of the angular acceleration of said drive shaft.
References Cited (Backward Citations)
CA475603A
Cited
US2784591A
Cited
US3092994A
Cited
US3057192A
Cited
US3442131A
Cited
US3375717A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |