Patent US3350731A successfully refreshed from Google Patents.
US3350731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tapping device
Assignee: Individual
•
Filing: 1965-04-15
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Granted: 1967-11-07
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Expires: 1985-04-15
Abstract
No abstract record available.
Inventors
- 👤 Benjamin Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:26
CPC Classifications
B; B23; B23G; B23G1/00; B23G1/44; B23G1/46; B23G1/465; Y; Y10; Y10T; Y10T408/00; Y10T408/70; Y10T408/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
272 words
IN A TAPPING DEVICE THE COMBINATION OF: A POWER INPUT SHAFT ADAPTED TO BE SUPPORTED AND ROTATED BY A POWER TOOL; A TAP SUPPORTING SHAFT CONNECTED WITH SAID POWER INPUT SHAFT AND TELESCOPICALLY AND SLIDABLY EXTENDING AND ROTATABLY MOUNTED RELATIVE THERETO; RESILIENT MEANS TENDING TELESCOPICALLY TO RETRACT SAID TAP SUPPORTING SHAFT RELATIVE TO SAID POWER INPUT SHAFT; FIRST AND SECOND CLUTCH MEMBERS ENGAGEABLE WITH EACH OTHER AND CONCENTRICALLY MOUNTED ON SAID POWER INPUT SHAFT AND SAID TAP SUPPORTING SHAFT, RESPECTIVELY; KEY MEANS AXIALLY SLIDABLY COUPLING SAID POWER INPUT SHAFT AND SAID FIRST CLUTCH MEMBER POSITIVELY TO ROTATABLY DRIVE SAID FIRST FRICTION CLUTCH MEMBER BY SAID POWER INPUT SHAFT; SAID SECOND CLUTCH MEMBER DRIVINGLY COUPLED TO SAID TAP SUPPORTING SHAFT; A CYLINDRICAL HOUSING SURROUNDING SAID CLUTCH MEMBERS AND CONCENTRICALLY ROTATABLY MOUNTED RELATIVE TO SAID POWER INPUT SHAFT AND SAID TAP SUPPORTING SHAFT; AN ENGAGEABLY PORTION OF SAID HOUSING FOR RESTRAINING IT AGAINST ROTATION; FIRST AXIAL THRUST BEARING MEANS ENGAGEABLE BETWEEN SAID HOUSING AND SAID FIRST CLUTCH MEMBER, SAID FIRST AXIAL THRUST BEARING MEANS DISPOSED AND ADAPTED TO FORCE SAID FIRST CLUTCH MEMBER IN ONE DIRECTION LONGITUDINALLY OF THE AXES OF SAID SHAFTS AND INTO ENGAGEMENT WITH SAID SECOND CLUTCH MEMBER IN RESPONSE TO MANUAL FORCE APPLIED TO SAID HOUSING IN SAID ONE DIRECTION AND DURING ROTATION OF SAID POWER INPUT SHAFT AND DURING RESTRAINT OF SAID HOUSING AGAINST ROTATION; FIRST AND SECOND ROLLER RACES DISPOSED CONCENTRICALLY RELATIVE TO SAID SHAFTS; SAID FIRST ROLLER RACE COUPLED IN ROTARY DRIVING RELATION TO SAID POWER INPUT SHAFT; SAID SECOND ROLLER RACE COUPLED IN ROTARY DRIVING RELATION TO SAID TAP SUPPORTING SHAFT; FIRST AND SECOND ANNULAR ROLLER
Claim 2
Dependent Claim
272 words
IN A TAPPING DEVICE THE COMBINATION OF: A POWER INPUT SHAFT ADAPTED TO BE SUPPORTED AND ROTATED BY A POWER TOOL; A TAP SUPPORTING SHAFT CONNECTED WITH SAID POWER INPUT SHAFT AND TELESCOPICALLY AND SLIDABLY EXTENDING AND ROTATABLY MOUNTED RELATIVE THERETO; RESILIENT MEANS TENDING TELESCOPICALLY TO RETRACT SAID TAP SUPPORTING SHAFT RELATIVE TO SAID POWER INPUT SHAFT; FIRST AND SECOND CLUTCH MEMBERS ENGAGEABLE WITH EACH OTHER AND CONCENTRICALLY MOUNTED ON SAID POWER INPUT SHAFT AND SAID TAP SUPPORTING SHAFT, RESPECTIVELY; KEY MEANS AXIALLY SLIDABLY COUPLING SAID POWER INPUT SHAFT AND SAID FIRST CLUTCH MEMBER POSITIVELY TO ROTATABLY DRIVE SAID FIRST FRICTION CLUTCH MEMBER BY SAID POWER INPUT SHAFT; SAID SECOND CLUTCH MEMBER DRIVINGLY COUPLED TO SAID TAP SUPPORTING SHAFT; A CYLINDRICAL HOUSING SURROUNDING SAID CLUTCH MEMBERS AND CONCENTRICALLY ROTATABLY MOUNTED RELATIVE TO SAID POWER INPUT SHAFT AND SAID TAP SUPPORTING SHAFT; AN ENGAGEABLY PORTION OF SAID HOUSING FOR RESTRAINING IT AGAINST ROTATION; FIRST AXIAL THRUST BEARING MEANS ENGAGEABLE BETWEEN SAID HOUSING AND SAID FIRST CLUTCH MEMBER, SAID FIRST AXIAL THRUST BEARING MEANS DISPOSED AND ADAPTED TO FORCE SAID FIRST CLUTCH MEMBER IN ONE DIRECTION LONGITUDINALLY OF THE AXES OF SAID SHAFTS AND INTO ENGAGEMENT WITH SAID SECOND CLUTCH MEMBER IN RESPONSE TO MANUAL FORCE APPLIED TO SAID HOUSING IN SAID ONE DIRECTION AND DURING ROTATION OF SAID POWER INPUT SHAFT AND DURING RESTRAINT OF SAID HOUSING AGAINST ROTATION; FIRST AND SECOND ROLLER RACES DISPOSED CONCENTRICALLY RELATIVE TO SAID SHAFTS; SAID FIRST ROLLER RACE COUPLED IN ROTARY DRIVING RELATION TO SAID POWER INPUT SHAFT; SAID SECOND ROLLER RACE COUPLED IN ROTARY DRIVING RELATION TO SAID TAP SUPPORTING SHAFT; FIRST AND SECOND ANNULAR ROLLER
References Cited (Backward Citations)
US1359422A
Cited
US2538548A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |