Patent US3114441A successfully refreshed from Google Patents.
US3114441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Current collector mechanism
Assignee: HK Porter Co Inc
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Filing: 1961-05-23
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Granted: 1963-12-17
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Expires: 1981-05-23
Abstract
No abstract record available.
Inventors
- 👤 Donald G Sprigings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:04
CPC Classifications
H; H01; H01R; H01R41/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
IN A CURRENT COLLECTOR DEVICE FOR TRANSFERRING ELECTRICAL CURRENT FROM A CONDUCTOR RAIL SYSTEM TO AN ELECTRICALLY ENERGIZABLE WORK UTILITY, THE COMBINATION COMPRISING, A MOUNTING BASE ADAPTED FOR PHYSICAL SECUREMENT TO THE WORK UTILITY FOR TRAVELLING MOTION THEREWITH, AN ARM PIVOTALLY COUPLED AT ITS LOWER END TO SAID MOUNTING BASE AND INCLUDING MEANS AT THE UPPER END FOR COUPLING SAID ARM TO A CURRENT COLLECTOR SHOE, AND TORSION SPRING ARM BIASING MEANS COUPLED TO SAID ARM AND SAID BASE AND EXERTING A ROTATIONAL SPRING FORCE UPON SAID ARM EFFECTIVE TO BIAS THE UPPER END THEREOF AWAY FROM SAID BASE, SAID BASE INCLUDING A HUB FORMATION HAVING A CIRCULAR CROSS-SECTION BORE THERETHROUGH, SAID ARM HAVING A
Claim 2
Dependent Claim
115 words
IN A CURRENT COLLECTOR DEVICE FOR TRANSFERRING ELECTRICAL CURRENT FROM A CONDUCTOR RAIL SYSTEM TO AN ELECTRICALLY ENERGIZABLE WORK UTILITY, THE COMBINATION COMPRISING, A MOUNTING BASE ADAPTED FOR PHYSICAL SECUREMENT TO THE WORK UTILITY FOR TRAVELLING MOTION THEREWITH, AN ARM PIVOTALLY COUPLED AT ITS LOWER END TO SAID MOUNTING BASE AND INCLUDING MEANS AT THE UPPER END FOR COUPLING SAID ARM TO A CURRENT COLLECTOR SHOE, AND TORSION SPRING ARM BIASING MEANS COUPLED TO SAID ARM AND SAID BASE AND EXERTING A ROTATIONAL SPRING FORCE UPON SAID ARM EFFECTIVE TO BIAS THE UPPER END THEREOF AWAY FROM SAID BASE, SAID BASE INCLUDING A HUB FORMATION HAVING A CIRCULAR CROSS-SECTION BORE THERETHROUGH, SAID ARM HAVING A
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-16 | 1967-06-17 | 1967-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-16 | 1971-06-17 | 1971-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-16 | 1975-06-17 | 1975-12-17 | $7700.00 | Window Closed / Lapsed |