US3218893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roof-bolting machine
Assignee: Gardner Denver Inc
•
Filing: 1962-05-22
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Granted: 1965-11-23
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Expires: 1982-05-22
Abstract
No abstract record available.
Inventors
- 👤 Roy W Madison
- 👤 Jr Royal M Bliss
- 👤 Francis M Wensing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:05
CPC Classifications
E; E21; E21D; E21D20/00; E21D20/003; E21D20/006; Y; Y10; Y10T; Y10T408/00; Y10T408/91; Y10T408/93
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
A ROOF-BOLTING APPARATUS COMPRISING: SUPPORT MEANS ADJUSTABLY MOVABLE WITH RESPECT TO A ROOF; BOLT MAGAZINE MEANS SECURED TO SAID SUPPORT MEANS AND MOVABLE THEREWITH; BOLT POSITIONING MEANS PIVOTALLY ATTACHED TO SAID SUPPORT MEANS AND INCLUDING BOLT RECEIVING MEANS FOR RECEIVING A BOLT FED FROM SAID MAGAZINE; BOLT SETTING MEANS INCLUDING A POWER WRENCH CARRIED BY SAID POSITIONING MEANS AND OPERABLE TO ENGAGE A BOLT RECEIVED BY SAID RECEIVING MEANS AND TO ROTATE THE SAME IN A DRILLED BOLT HOLE IN SAID ROOF; POWER MEANS CONNECTED BETWEEN SAID SUPPORT MEANS AND SAID POSITIONING MEANS AND OPERABLE FOR EFFECTING PIVOTAL MOVEMENT OF SAID POSITIONING MEANS AND SAID BOLT SETTING MEANS WITH RESPECT TO SAID SUPPORT MEANS BETWEEN A FIRST POSITION WHEREIN A BOLT IS RECEIVED FROM SAID MAGAZINE MEANS AND A SECOND POSITION WHEREIN SAID BOLT IS ALIGNED WITH SAID BOLT HOLE AND IS ENGAGED AND ROTATED BY SAID BOLT SETTING MEANS; AND A MAGAZINE OPERATING MECHANISM RESPONSIVE TO PIVOTING OF SAID POSITIONING MEANS AND SAID BOLT SETTING MEANS FOR FEEDING A BOLT FROM SAID MAGAZINE.
Claim 2
Dependent Claim
174 words
A ROOF-BOLTING APPARATUS COMPRISING: SUPPORT MEANS ADJUSTABLY MOVABLE WITH RESPECT TO A ROOF; BOLT MAGAZINE MEANS SECURED TO SAID SUPPORT MEANS AND MOVABLE THEREWITH; BOLT POSITIONING MEANS PIVOTALLY ATTACHED TO SAID SUPPORT MEANS AND INCLUDING BOLT RECEIVING MEANS FOR RECEIVING A BOLT FED FROM SAID MAGAZINE; BOLT SETTING MEANS INCLUDING A POWER WRENCH CARRIED BY SAID POSITIONING MEANS AND OPERABLE TO ENGAGE A BOLT RECEIVED BY SAID RECEIVING MEANS AND TO ROTATE THE SAME IN A DRILLED BOLT HOLE IN SAID ROOF; POWER MEANS CONNECTED BETWEEN SAID SUPPORT MEANS AND SAID POSITIONING MEANS AND OPERABLE FOR EFFECTING PIVOTAL MOVEMENT OF SAID POSITIONING MEANS AND SAID BOLT SETTING MEANS WITH RESPECT TO SAID SUPPORT MEANS BETWEEN A FIRST POSITION WHEREIN A BOLT IS RECEIVED FROM SAID MAGAZINE MEANS AND A SECOND POSITION WHEREIN SAID BOLT IS ALIGNED WITH SAID BOLT HOLE AND IS ENGAGED AND ROTATED BY SAID BOLT SETTING MEANS; AND A MAGAZINE OPERATING MECHANISM RESPONSIVE TO PIVOTING OF SAID POSITIONING MEANS AND SAID BOLT SETTING MEANS FOR FEEDING A BOLT FROM SAID MAGAZINE.
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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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |