US3132702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary impact drilling tool
Assignee: IMPACT ROTOR TOOL Inc
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Filing: 1960-09-29
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Granted: 1964-05-12
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Expires: 1980-09-29
Abstract
No abstract record available.
Inventors
- 👤 Sr Wilbur T Schrum
- 👤 William E Truxal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:05
CPC Classifications
E; E21; E21D; E21D20/00; E21D20/003; E21B; E21B6/00; Y; Y10; Y10S; Y10S173/00; Y10S173/03
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
134 words
A ROTARY IMPACT DRILLING TOOL HAVING A DRIVE END AND A WORKING END, COMPRISING, IN COMBINATION, AN AXIALLY EXTENDING CHAMBER, AN AXIALLY RECIPROCABLE ROTOR POSITIONED IN SAID CHAMBER, DRIVE MEANS POSITIONED IN SAID DRIVE END TO ROTATE SAID ROTOR AND PERMIT AXIAL MOVEMENT THEREOF RELATIVE TO SAID DRIVE MEANS, SAID ROTOR HAVING A PERIPHERALLY ENDLESS CAM GROOVE WITH SIDES TOWARD THE RESPECTIVE ENDS OF SAID ROTOR, A PLURALITY OF CAM RISE AND CAM FALL PORTIONS ALONG AT LEAST THE SIDE OF SAID CAM GROOVE TOWARD SAID WORKING END, AND A PLURALITY OF INWARDLY EXTENDING THRUST AND RETURN GUIDES HAVING THEIR RESPECTIVE AXES INTERSECTING THE AXIS OF SAID ROTOR, AT LEAST SAID RESPECTIVE THRUST GUIDES HAVING THEIR RESPECTIVE INWARD ENDS SUBSTANTIALLY CONTINUOUSLY IN ENGAGEMENT WITH THE SIDE OF SAID CAM GROOVE TOWARD SAID WORKING END.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-12 | 1967-11-11 | 1968-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-12 | 1971-11-11 | 1972-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-12 | 1975-11-11 | 1976-05-12 | $7700.00 | Window Closed / Lapsed |