US3304838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid operated motor for drilling mechanism
Assignee: Individual
•
Filing: 1965-02-12
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Granted: 1967-02-21
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Expires: 1985-02-12
Abstract
No abstract record available.
Inventors
- 👤 Harry W Mcdonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:23
CPC Classifications
E; E21; E21B; E21B4/00; E21B4/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
IN A FLUID OPERATED ROTARY MOTOR ADAPTED TO BE ATTACHED AT ONE END TO A SOURCE OF FLUID PRESSURE, (A) A BARREL, (B) A COUPLER HAVING A HEAD FOR ATTACHING SAID BARREL TO A SOURCE OF FLUID PRESSURE, (C) MEANS IN SAID BARREL SPACED AXIALLY FROM SAID HEAD AND COOPERATING WITH SAID BARREL AND HEAD TO DEFINE A CHAMBER, (D) A ROTOR IN SAID CHAMBER, (E) A CAM ELEMENT IN SAID CHAMBER AT ONE SIDE THEREOF WHICH IS COEXTENSIVE WITH SAID CHAMBER, (F) A PLURALITY OF CIRCUMFERENTIALLY SPACED AXIALLY EXTENDED GROOVES IN THE PERIPHERAL SURFACE OF SAID ROTOR, (G) A VANE PIVOTALLY MOUNTED IN EACH OF SAID GROOVES AND AXIALLY COEXTENSIVE WITH SAID CHAMBER, (H) SAID ROTOR HAVING AN AXIAL BORE FORMED THEREIN, (I) A STATIONARY TUBULAR MANIFOLD HAVING ONE END PORTION SECURED TO AND CARRIED BY SAID HEAD, WITH THE OTHER END PORTION THEREOF RECEIVED IN SAID BORE, AND DEFINING A FLUID INLET, (J) SAID MANIFOLD HAVING A RADIALLY OPENING PORT FORMED IN THE SIDE WALL THEREOF,
Claim 2
Dependent Claim
168 words
IN A FLUID OPERATED ROTARY MOTOR ADAPTED TO BE ATTACHED AT ONE END TO A SOURCE OF FLUID PRESSURE, (A) A BARREL, (B) A COUPLER HAVING A HEAD FOR ATTACHING SAID BARREL TO A SOURCE OF FLUID PRESSURE, (C) MEANS IN SAID BARREL SPACED AXIALLY FROM SAID HEAD AND COOPERATING WITH SAID BARREL AND HEAD TO DEFINE A CHAMBER, (D) A ROTOR IN SAID CHAMBER, (E) A CAM ELEMENT IN SAID CHAMBER AT ONE SIDE THEREOF WHICH IS COEXTENSIVE WITH SAID CHAMBER, (F) A PLURALITY OF CIRCUMFERENTIALLY SPACED AXIALLY EXTENDED GROOVES IN THE PERIPHERAL SURFACE OF SAID ROTOR, (G) A VANE PIVOTALLY MOUNTED IN EACH OF SAID GROOVES AND AXIALLY COEXTENSIVE WITH SAID CHAMBER, (H) SAID ROTOR HAVING AN AXIAL BORE FORMED THEREIN, (I) A STATIONARY TUBULAR MANIFOLD HAVING ONE END PORTION SECURED TO AND CARRIED BY SAID HEAD, WITH THE OTHER END PORTION THEREOF RECEIVED IN SAID BORE, AND DEFINING A FLUID INLET, (J) SAID MANIFOLD HAVING A RADIALLY OPENING PORT FORMED IN THE SIDE WALL THEREOF,
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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |