US3194536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pre-stressed concrete reinforced strand tensioning device
Assignee: Individual
•
Filing: 1963-03-06
•
Granted: 1965-07-13
•
Expires: 1983-03-06
Abstract
No abstract record available.
Inventors
- 👤 James S Simms
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:15
CPC Classifications
E; E04; E04G; E04G21/00; E04G21/12; E04G21/121
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
204 words
AN APPARATUS FOR TENSIONING CABLES, COMPRISING, IN COMBINATION, (1) A FLUID ACTUATED DRIVING UNIT INCLUDING, (A) A REAR FRAME ASSEMBLY (B) A CYLINDER SUPPORTED IN SAID FRAME ASSEMBLY (C) A PISTON RECIPROCABLE IN SAID CYLINDER (D) FRONT AND REAR END CYLINDER HEADS ON SAID CYLINDER, INCLUDING A FRONT OPENING IN SAID FRONT END CYLINDER HEAD, (E) A FORWARDLY EXTENDING PISTON ROD ATTACHED TO SAID PISTON AND EXTENDING THROUGH SAID OPENING, AND (F) MEANS FOR SUPPLYING DRIVING FLUID TO EITHER END OF SAID CYLINDER FOR RECIPROCABLY DRIVING SAID PISTON AND SAID ROD, (2) A FRONT FRAME AND CHUCK HOLDER ASSEMBLY INCLUDING, (A) RIGID MEMBERS FORMING THE SIDES OF SAID FRONT FRAME, AND DISPOSED ACROSS SAID MEMBERS AND FORMING THE FRONT END PORTION OF SAID FRAME, (B) A RIGID FRONT PLATE INCLUDING A FRONT SURFACE PORTION FOR ABUTTING THE REAR OF A CHUCK DISPOSED ON A CABLE TO BE TENSIONED, AND FOR PREVENTING REARWARD MOVEMENT OF SAID CHUCK DURING TENSIONING OF THE CABLE, WHILE APPLYING A TENSIONING FORCE TO SAID CABLE, AND (C) A CHUCK HOLDER ATTACHED TO SAID PISTON ROD AND RECIPROCABLE BETWEEN SAID FRONT END PLATE AND SAID FRONT CYLINDER HEAD, SAID CHUCK HOLDER INCLUDING A CABLE RECEIVING SLOT IN THE FRONT FACE THEREOF.
Claim 2
Independent Claim
204 words
AN APPARATUS FOR TENSIONING CABLES, COMPRISING, IN COMBINATION, (1) A FLUID ACTUATED DRIVING UNIT INCLUDING, (A) A REAR FRAME ASSEMBLY (B) A CYLINDER SUPPORTED IN SAID FRAME ASSEMBLY (C) A PISTON RECIPROCABLE IN SAID CYLINDER (D) FRONT AND REAR END CYLINDER HEADS ON SAID CYLINDER, INCLUDING A FRONT OPENING IN SAID FRONT END CYLINDER HEAD, (E) A FORWARDLY EXTENDING PISTON ROD ATTACHED TO SAID PISTON AND EXTENDING THROUGH SAID OPENING, AND (F) MEANS FOR SUPPLYING DRIVING FLUID TO EITHER END OF SAID CYLINDER FOR RECIPROCABLY DRIVING SAID PISTON AND SAID ROD, (2) A FRONT FRAME AND CHUCK HOLDER ASSEMBLY INCLUDING, (A) RIGID MEMBERS FORMING THE SIDES OF SAID FRONT FRAME, AND DISPOSED ACROSS SAID MEMBERS AND FORMING THE FRONT END PORTION OF SAID FRAME, (B) A RIGID FRONT PLATE INCLUDING A FRONT SURFACE PORTION FOR ABUTTING THE REAR OF A CHUCK DISPOSED ON A CABLE TO BE TENSIONED, AND FOR PREVENTING REARWARD MOVEMENT OF SAID CHUCK DURING TENSIONING OF THE CABLE, WHILE APPLYING A TENSIONING FORCE TO SAID CABLE, AND (C) A CHUCK HOLDER ATTACHED TO SAID PISTON ROD AND RECIPROCABLE BETWEEN SAID FRONT END PLATE AND SAID FRONT CYLINDER HEAD, SAID CHUCK HOLDER INCLUDING A CABLE RECEIVING SLOT IN THE FRONT FACE THEREOF.
References Cited (Backward Citations)
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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) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |