Patent US3155171A successfully refreshed from Google Patents.
US3155171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feed control means for down-the-hole rock drill rigs
Assignee: Ingersoll Rand Co
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Filing: 1963-07-15
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Granted: 1964-11-03
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Expires: 1983-07-15
Abstract
No abstract record available.
Inventors
- 👤 Ewald H Kurt
- 👤 Samuel P Lewis
- 👤 Loree A D Paulson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:07
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/08; E21B44/00; E21B44/02; E21B44/06; Y; Y10; Y10T; Y10T408/00; Y10T408/65; Y10T408/675; Y10T408/6757
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A FEED CONTROL APPARATUS IN COMBINATION WITH A DOWN-THE-HOLE ROCK DRILL COMPRISING (A) A DRILL RIG, (B) A DRILL, (C) A ROTARY HEAD HAVING (1) A ROTATING MECHANISM, MOVABLE LONGITUDINALLY ON SAID RIG TO SUPPORT SAID DRILL FOR LONGITUDINAL MOVEMENT, (2) A SPINDLE DRIVER CARRIED BY SAID ROTARY HEAD AND ROTATED BY SAID MECHANISM, (3) A LONGITUDINALLY MOVABLE DRILL ROTATING SPINDLE SLIDABLY SUPPORTED IN SAID SPINDLE DRIVER FOR RELATIVE LONGITUDINAL MOVEMENT WITH RESPECT TO THE LATTER AND CONNECTED TO ROTATE THEREWITH, (4) SAID SPINDLE AND SPINDLE DRIVER DEFINING A PRESSURIZED FLUID INLET CHAMBER COMMUNICATING WITH A SOURCE OF PRESSURIZED FLUID TO RECEIVE PRESSURIZED FLUID THEREFROM, (D) PRESSURIZED FLUID OPERATED MOTOR MEANS FOR MOVING SAID ROTARY HEAD LONGITUDINALLY ON SAID RIG, (E) SAID SPINDLE DRIVER HAVING PASSAGE MEANS COMMUNICATING WITH SAID INLET CHAMBER AND SAID MOTOR
Claim 2
Dependent Claim
135 words
A FEED CONTROL APPARATUS IN COMBINATION WITH A DOWN-THE-HOLE ROCK DRILL COMPRISING (A) A DRILL RIG, (B) A DRILL, (C) A ROTARY HEAD HAVING (1) A ROTATING MECHANISM, MOVABLE LONGITUDINALLY ON SAID RIG TO SUPPORT SAID DRILL FOR LONGITUDINAL MOVEMENT, (2) A SPINDLE DRIVER CARRIED BY SAID ROTARY HEAD AND ROTATED BY SAID MECHANISM, (3) A LONGITUDINALLY MOVABLE DRILL ROTATING SPINDLE SLIDABLY SUPPORTED IN SAID SPINDLE DRIVER FOR RELATIVE LONGITUDINAL MOVEMENT WITH RESPECT TO THE LATTER AND CONNECTED TO ROTATE THEREWITH, (4) SAID SPINDLE AND SPINDLE DRIVER DEFINING A PRESSURIZED FLUID INLET CHAMBER COMMUNICATING WITH A SOURCE OF PRESSURIZED FLUID TO RECEIVE PRESSURIZED FLUID THEREFROM, (D) PRESSURIZED FLUID OPERATED MOTOR MEANS FOR MOVING SAID ROTARY HEAD LONGITUDINALLY ON SAID RIG, (E) SAID SPINDLE DRIVER HAVING PASSAGE MEANS COMMUNICATING WITH SAID INLET CHAMBER AND SAID MOTOR
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) | 1967-11-03 | 1968-05-04 | 1968-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-03 | 1972-05-04 | 1972-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-03 | 1976-05-04 | 1976-11-03 | $7700.00 | Window Closed / Lapsed |