US3254249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brush holder with commutator brushes for electric motor
Assignee: Individual
•
Filing: 1963-04-04
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Granted: 1966-05-31
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Expires: 1983-04-04
Abstract
No abstract record available.
Inventors
- 👤 Pfeifer Hermann Helmut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:22
CPC Classifications
H; H01; H01R; H01R39/00; H01R39/02; H01R39/38; H01R39/39
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A COMMUTATOR BRUSH HOLDER FOR AN ELECTRIC MOTOR COMPRISING A BRUSH HOLDING MEMBER HAVING SPRING RECEIVING RECESSES THEREIN AND GROOVELIKE RECESSES EXTENDING SUBSTANTIALLY AT RIGHT ANGLES TO SAID SPRING RECEIVING RECESSES, LEAF SPRINGS HAVING FIRST ENDS INSERTED IN THE SPRING RECEIVING RECESSES FROM ONE SIDE OF THE BRUSH HOLDING MEMBER, SAID LEAF SPRINGS HAVING SECOND PROJECTING ENDS WITH BRUSHES THEREON ADAPTED TO BE PRESSED BY SAID LEAF SPRINGS AGAINST THE COMMUTATOR OF SAID MOTOR, SET SCREW MEANS ADAPTED TO BE INSERTED FROM SAID SIDE INTO THE GROOVELIKE RECESSES FOR ACTING ON THE LEAF SPRINGS INTERMEDIATE SAID FIRST AND SECOND ENDS THEREOF TO ADJUST THE INTIAL STRESS THEREOF, AND A COVER ADAPTED TO BE SECURED TO SAID SIDE FOR RETAINING SAID LEAF SPRINGS AND SAID SETSCREWS IN SAID RECESSES.
Claim 2
Dependent Claim
128 words
A COMMUTATOR BRUSH HOLDER FOR AN ELECTRIC MOTOR COMPRISING A BRUSH HOLDING MEMBER HAVING SPRING RECEIVING RECESSES THEREIN AND GROOVELIKE RECESSES EXTENDING SUBSTANTIALLY AT RIGHT ANGLES TO SAID SPRING RECEIVING RECESSES, LEAF SPRINGS HAVING FIRST ENDS INSERTED IN THE SPRING RECEIVING RECESSES FROM ONE SIDE OF THE BRUSH HOLDING MEMBER, SAID LEAF SPRINGS HAVING SECOND PROJECTING ENDS WITH BRUSHES THEREON ADAPTED TO BE PRESSED BY SAID LEAF SPRINGS AGAINST THE COMMUTATOR OF SAID MOTOR, SET SCREW MEANS ADAPTED TO BE INSERTED FROM SAID SIDE INTO THE GROOVELIKE RECESSES FOR ACTING ON THE LEAF SPRINGS INTERMEDIATE SAID FIRST AND SECOND ENDS THEREOF TO ADJUST THE INTIAL STRESS THEREOF, AND A COVER ADAPTED TO BE SECURED TO SAID SIDE FOR RETAINING SAID LEAF SPRINGS AND SAID SETSCREWS IN SAID RECESSES.
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) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |