US3911336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plural motor drive including a servo motor control system
Assignee: Individual
•
Filing: 1974-02-01
•
Granted: 1975-10-07
•
Expires: 1994-02-01
Abstract
Abstract The present invention relates to a servo motor control system in which an electric motor is instantaneously energized by movement of a relatively weak servo motor of the type normally actuated by radio controls in a radio control model. The electric control motor is controlled in forward and reverse rotation and drives one element of a switch controlling the motor with the other element being driven by the servo motor.
Inventors
- 👤 Thomas M Diggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:21
CPC Classifications
A; A63; A63H; A63H29/00; A63H29/22; H; H02; H02P; H02P5/00; H02P5/60
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
129 words
A servo motor control system comprising a reversable electric motor drive, longitudinally reciprocating means driven by said electric motor drive for connection to an object to be move, a first switch element mounted on said means and moveable longitudinally therewith, a servo motor control member mounted on said means and longitudinally moveable with respect to said means, a second switch element mounted on said motor control member for movement therewith, at least one of said switch elements having a pair of longitudinally spaced contacts and the other of said switch elements having a contact for selective engagement with said space contacts and means extending from said switch elements for energizing a forward or reverse circuit to said electric motor drive corresponding to the movement of said servo motor control.
Claim 2
Dependent Claim
129 words
A servo motor control system comprising a reversable electric motor drive, longitudinally reciprocating means driven by said electric motor drive for connection to an object to be move, a first switch element mounted on said means and moveable longitudinally therewith, a servo motor control member mounted on said means and longitudinally moveable with respect to said means, a second switch element mounted on said motor control member for movement therewith, at least one of said switch elements having a pair of longitudinally spaced contacts and the other of said switch elements having a contact for selective engagement with said space contacts and means extending from said switch elements for energizing a forward or reverse circuit to said electric motor drive corresponding to the movement of said servo motor control.
Claim 3
Dependent Claim
28 words
A device as claimed in claim 1 wherein the contact of the other of said switch elements is spring urged into contacting relation with said pair of contacts.
Claim 4
Dependent Claim
44 words
A device as claimed in claim 2 including two of said spring urged contacts arranged in spaced apart opposed relation and two of said spaced pair of contacts with each of said spring urged contacts cooperating with one of said spaced pair of contacts.
Claim 5
Dependent Claim
20 words
A device as claimed in claim 1 wherein said reversable electric motor drive includes a pair of operating simultaneously motors.
Claim 6
Dependent Claim
24 words
A device As claimed in claim 1 including means in said electric motor drive for frictionally retarding the speed of said electric motor drive.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |