Patent US3187906A successfully refreshed from Google Patents.
US3187906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crane with pneumatically extensible gantry mast
Assignee: Koehring Co
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Filing: 1963-01-25
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Granted: 1965-06-08
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Expires: 1983-01-25
Abstract
No abstract record available.
Inventors
- 👤 Robert J Bushong
- 👤 George C Noll
- 👤 Virgil F Kramer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:22
CPC Classifications
B; B66; B66C; B66C23/00; B66C23/88; B66C23/92; B66C23/18; B66C23/36; B66C23/62; B66C23/82; B66C2700/00; B66C2700/03; B66C2700/0321; B66C2700/0357; B66C2700/0364; B66C2700/0371
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
IN COMBINATION, A FRAME, A BOOM PIVOTED TO SAID FRAME FOR VERTICAL SWINGING MOVEMENT ABOUT A HORIZONTAL AXIS, A FLUID PRESSURE RETRACTIBLE AND EXTENSIBLE GANTRY MAST PIVOTALLY CONNECTED TO SAID BOOM, HOISTING MEANS CONNECTED TO THE PEAK OF SAID MAST FOR VERTICALLY SWINGING SAID MAST AND THUS SAID BOOM, AND A SOURCE OF AIR UNDER PRESSURE CONNECTED TO SAID MAST TO EXTEND SAID MAST AND WHEREBY SAID HOISTING MEANS IS ADAPTED FOR RETRACTING SAID MUST THEREBY RENEWING SAID SOURCE OF AIR UNDER PRESSURE.
Claim 2
Dependent Claim
83 words
IN COMBINATION, A FRAME, A BOOM PIVOTED TO SAID FRAME FOR VERTICAL SWINGING MOVEMENT ABOUT A HORIZONTAL AXIS, A FLUID PRESSURE RETRACTIBLE AND EXTENSIBLE GANTRY MAST PIVOTALLY CONNECTED TO SAID BOOM, HOISTING MEANS CONNECTED TO THE PEAK OF SAID MAST FOR VERTICALLY SWINGING SAID MAST AND THUS SAID BOOM, AND A SOURCE OF AIR UNDER PRESSURE CONNECTED TO SAID MAST TO EXTEND SAID MAST AND WHEREBY SAID HOISTING MEANS IS ADAPTED FOR RETRACTING SAID MUST THEREBY RENEWING SAID SOURCE OF AIR UNDER PRESSURE.
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) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |