Patent US3154709A successfully refreshed from Google Patents.
US3154709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brush holder for a small electric motor
Assignee: US Philips Corp
•
Filing: 1960-07-05
•
Granted: 1964-10-27
•
Expires: 1980-07-05
Abstract
No abstract record available.
Inventors
- 👤 Ettema Everhardus Catharinus
- 👤 Wieger Van Dijk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:08
CPC Classifications
H; H01; H01R; H01R39/00; H01R39/02; H01R39/38; H01R39/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
IN A LOW POWER MINIATURE ELECTRIC MOTOR THE COMBINATION COMPRISING A COMMUTATOR DISC, A MOUNTING PLATE HAVING A BRUSH GUIDE MEMBER, A BRUSH LOOSELY FITTING WITHIN SAID MEMBER AND RESILIENT MEANS URGING SAID BRUSH IN A DIRECTION PERPENDICULAR TO THE COLLECTOR SURFACE, SAID BRUSH GUIDE MEMBER HAVING LUG MEANS PRORJECTING INWARDLY TOWARD SAID BRUSH TO PREVENT CONTACT BETWEEN THE BRUSH HOLDER WALL AND SAID BRUSH AND PROVIDING A PIVOT ABOUT WHICH SAID BRUSH IS FREE TO ROTATE WITHIN SAID HOLDER, SAID LUG AND THE FORCE OF FRICTION ACTING ON SAID BRUSH CREATE A MOMENT ACTING ON SAID BRUSH IN ONE DIRECTION, SAID RESILIENT MEANS HAVING OFFSET CONTACT WITH SAID BRUSH FOR URGING SAID BRUSH AGAINST SAID COMMUTATOR AND APPLYING AN OFFSET FORCE ON SAID BRUSH TO PRODUCE A MOMENT OPPOSING SAID ONE COUPLE ACTING ON SAID BRUSH.
Claim 2
Dependent Claim
137 words
IN A LOW POWER MINIATURE ELECTRIC MOTOR THE COMBINATION COMPRISING A COMMUTATOR DISC, A MOUNTING PLATE HAVING A BRUSH GUIDE MEMBER, A BRUSH LOOSELY FITTING WITHIN SAID MEMBER AND RESILIENT MEANS URGING SAID BRUSH IN A DIRECTION PERPENDICULAR TO THE COLLECTOR SURFACE, SAID BRUSH GUIDE MEMBER HAVING LUG MEANS PRORJECTING INWARDLY TOWARD SAID BRUSH TO PREVENT CONTACT BETWEEN THE BRUSH HOLDER WALL AND SAID BRUSH AND PROVIDING A PIVOT ABOUT WHICH SAID BRUSH IS FREE TO ROTATE WITHIN SAID HOLDER, SAID LUG AND THE FORCE OF FRICTION ACTING ON SAID BRUSH CREATE A MOMENT ACTING ON SAID BRUSH IN ONE DIRECTION, SAID RESILIENT MEANS HAVING OFFSET CONTACT WITH SAID BRUSH FOR URGING SAID BRUSH AGAINST SAID COMMUTATOR AND APPLYING AN OFFSET FORCE ON SAID BRUSH TO PRODUCE A MOMENT OPPOSING SAID ONE COUPLE ACTING ON SAID BRUSH.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-27 | 1968-04-27 | 1968-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-27 | 1972-04-27 | 1972-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-27 | 1976-04-27 | 1976-10-27 | $7700.00 | Window Closed / Lapsed |