US3252349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gear drive mechanism
Assignee: Dorr Oliver Inc
•
Filing: 1963-09-23
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Granted: 1966-05-24
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Expires: 1983-09-23
Abstract
No abstract record available.
Inventors
- 👤 Thomas A Widdrington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:40
CPC Classifications
F; F16; F16H; F16H1/00; F16H1/02; F16H1/20; F16H1/22; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19633; Y10T74/19642; Y10T74/19698; Y10T74/19828; Y10T74/19842
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
244 words
A DRIVE MECHANISM WHICH COMPRISES A BASE CONSTRUCTION, A GEAR MOUNTED FOR ROTATION ON SAID BASE CONSTRUCTION, A PLURALITY OF WORM DRIVE UNITS MOUNTED ON SAID BASE CONSTRUCTION AND ARRANGED TO IMPART POSITIVE DRIVE TORQUE TO SAID GEAR, EACH DRIVE UNIT HAVING A HOUSING STRUCTURE, A PLURALITY OF HYDRAULIC PRESSURE CHAMHOUSING STRUCTURE, A PLURALITY OF HYDRAULIC PRESSURE CHAMBER UNITS CONSTRUCTED SO AS TO BE AXIALLY COMPRESSIBLE BUT RADIALLY SUBSTANTIALLY NON-YIELDABLE, A PLURALITY OF FORCE CONTAINING STRUCTURES FOR THE RESPECTIVE PRESSURE CHAMBER UNITS LOCATED AT THE THRUST IMPARTING ENDS OF THE RESPECTIVE WORM SHAFTS, EACH CONTAINING STRUCTURE HAVING ABUTMENT MEANS ENGAGED BY ONE END OF A RESPECTIVE PRESSURE UNIT, TRANSMITTING MEANS FOR IMPARTING THE EFFECTS OF THRUST FORCES FROM THE RESPECTIVE WORM SHAFT MEMBERS TO THE OTHER ENDS OF RESPECTIVE PRESSURE CHAMBER UNITS, FASTENING MEANS FOR DETACHABLY SECURING SAID CONTAINING STRUCTURES IN FIXED POSITION RELATIVE TO SAID HOUSING STRUCTURES, WHEREBY SAID TRANSMITTING MEANS ARE MAINTAINED IN COOPERATIVE CONTACT WITH SAID OTHER ENDS OF RESPECTIVE PRESSURE CHAMBER UNITS, AND PRESSURE EQUALIZING CONDUIT MEANS INTERCONNECTING SAID PRESSURE CHAMBER UNITS AND CONSTITUTING THEREWITH A SEALED HYDRAULIC PRESSURE SYSTEM EFFECTIVE TO HYDRAULICALLY INTERBALANCE THE THRUST FORCES OF SAID WORM SHAFT MEMBERS TENDING TO COMPRESS THE RESPECTIVE PRESSURE CHAMBER UNITS, SO THAT IN TURN THE TORQUE FORCES APPLIED TO SAID GEAR BY THE RESPECTIVE DRIVE UNITS ARE INTERBALANCED WHEN MOTOR POWER IS APPLIED THERETO, SAID SEALED HYDRAULIC PRESSURE SYSTEM BEING DETACHABLE FROM SAID DRIVE UNITS WHEN DETACHING SAID FASTENING MEANS.
Claim 2
Dependent Claim
244 words
A DRIVE MECHANISM WHICH COMPRISES A BASE CONSTRUCTION, A GEAR MOUNTED FOR ROTATION ON SAID BASE CONSTRUCTION, A PLURALITY OF WORM DRIVE UNITS MOUNTED ON SAID BASE CONSTRUCTION AND ARRANGED TO IMPART POSITIVE DRIVE TORQUE TO SAID GEAR, EACH DRIVE UNIT HAVING A HOUSING STRUCTURE, A PLURALITY OF HYDRAULIC PRESSURE CHAMHOUSING STRUCTURE, A PLURALITY OF HYDRAULIC PRESSURE CHAMBER UNITS CONSTRUCTED SO AS TO BE AXIALLY COMPRESSIBLE BUT RADIALLY SUBSTANTIALLY NON-YIELDABLE, A PLURALITY OF FORCE CONTAINING STRUCTURES FOR THE RESPECTIVE PRESSURE CHAMBER UNITS LOCATED AT THE THRUST IMPARTING ENDS OF THE RESPECTIVE WORM SHAFTS, EACH CONTAINING STRUCTURE HAVING ABUTMENT MEANS ENGAGED BY ONE END OF A RESPECTIVE PRESSURE UNIT, TRANSMITTING MEANS FOR IMPARTING THE EFFECTS OF THRUST FORCES FROM THE RESPECTIVE WORM SHAFT MEMBERS TO THE OTHER ENDS OF RESPECTIVE PRESSURE CHAMBER UNITS, FASTENING MEANS FOR DETACHABLY SECURING SAID CONTAINING STRUCTURES IN FIXED POSITION RELATIVE TO SAID HOUSING STRUCTURES, WHEREBY SAID TRANSMITTING MEANS ARE MAINTAINED IN COOPERATIVE CONTACT WITH SAID OTHER ENDS OF RESPECTIVE PRESSURE CHAMBER UNITS, AND PRESSURE EQUALIZING CONDUIT MEANS INTERCONNECTING SAID PRESSURE CHAMBER UNITS AND CONSTITUTING THEREWITH A SEALED HYDRAULIC PRESSURE SYSTEM EFFECTIVE TO HYDRAULICALLY INTERBALANCE THE THRUST FORCES OF SAID WORM SHAFT MEMBERS TENDING TO COMPRESS THE RESPECTIVE PRESSURE CHAMBER UNITS, SO THAT IN TURN THE TORQUE FORCES APPLIED TO SAID GEAR BY THE RESPECTIVE DRIVE UNITS ARE INTERBALANCED WHEN MOTOR POWER IS APPLIED THERETO, SAID SEALED HYDRAULIC PRESSURE SYSTEM BEING DETACHABLE FROM SAID DRIVE UNITS WHEN DETACHING SAID FASTENING MEANS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-23 | 1969-11-22 | 1970-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-23 | 1973-11-22 | 1974-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-23 | 1977-11-22 | 1978-05-24 | $7700.00 | Window Closed / Lapsed |