Patent US3337698A successfully refreshed from Google Patents.
US3337698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Proportional controller
Assignee: Individual
•
Filing: 1965-09-30
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Granted: 1967-08-22
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Expires: 1985-09-30
Abstract
No abstract record available.
Inventors
- 👤 Jr William O Purcell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:20
CPC Classifications
G; G05; G05G; G05G9/00; G05G9/02; G05G9/04; G05G9/047; G05G9/04785; G05G2009/04703; G05G2009/04707; G05G2009/0474; G05G2009/04748
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A PROPORTIONAL CONTROLLER COMPRISING A BALL-SHAPED COMMUTATOR MOUNTED AT ONE END AND ADAPTED FOR CONTINUOUS ROTATION; A HOLLOW SHELL CONCENTRIC WITH, AND PLACED AROUND THE BALL-SHAPED COMMUTATOR SO AS TO MOVE IN ALL DIRECTIONS; A PLURALITY OF BRUSHES ON THE HOLLOW SHELL TO CONTACT THE COMMUTATOR; AND A CONTROLLER HANDLE TO MOVE THE HOLLOW SHELL.
Claim 2
Dependent Claim
55 words
A PROPORTIONAL CONTROLLER COMPRISING A BALL-SHAPED COMMUTATOR MOUNTED AT ONE END AND ADAPTED FOR CONTINUOUS ROTATION; A HOLLOW SHELL CONCENTRIC WITH, AND PLACED AROUND THE BALL-SHAPED COMMUTATOR SO AS TO MOVE IN ALL DIRECTIONS; A PLURALITY OF BRUSHES ON THE HOLLOW SHELL TO CONTACT THE COMMUTATOR; AND A CONTROLLER HANDLE TO MOVE THE HOLLOW SHELL.
References Cited (Backward Citations)
US1995708A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-21 | 1971-02-20 | 1971-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-21 | 1975-02-20 | 1975-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-21 | 1979-02-20 | 1979-08-22 | $7700.00 | Window Closed / Lapsed |