US3090983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carrier and manipulator for pneumatic tools
Assignee: Individual
•
Filing: 1961-02-06
•
Granted: 1963-05-28
•
Expires: 1981-02-06
Abstract
No abstract record available.
Inventors
- 👤 Modrak Frank
- 👤 Berardinelli Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:51
CPC Classifications
F; F27; F27D; F27D25/00; F27D25/001; B; B25; B25D; B25D17/00; B25D17/28; B25D17/32; Y; Y10; Y10S; Y10S37/00; Y10S37/904
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A DEVICE FOR CLEANING WALLS AND FLOORS OF A FURNACE PIT LOCATED BELOW GROUND LEVEL, COMPRISING A CRAWLER TRACTOR MOVABLE ON GROUND LEVEL, A PAIR OF SPACED PARALLEL LIFTING ARM PIVOTALLY CARRIED BY THE TRACTOR AND TILTABLE IN PARALLEL VERTICAL PLANES BELOW THE TRACTOR TO EXTEND INTO THE PIT, A PAIR OF SPACED PARALLEL PLUNGERS CARRIED BY THE TRACTOR, SAID PLUNGERS BEING AXIALLY EXTENSIBLE INTO THE PIT BELOW GROUND LEVEL AND RETRACTABLE THEREFROM, A RECTANGULAR FRAME STRUCTURE HAVING SPACED SIDE WALLS, A FRONT END WALL AND A REAR END WALL, SAID ARMS AND PLUNGERS HAVING LOWER ENDS PIVOTALLY ATTACHED AT FOUR SPACED CORNER POINTS TO THE REAR END WALL FOR RAISING AND LOWERING THE FRAME STRUCTURE VERTICALLY AND FOR TILTING THE FRAME STRUC-
Claim 2
Independent Claim
123 words
A DEVICE FOR CLEANING WALLS AND FLOORS OF A FURNACE PIT LOCATED BELOW GROUND LEVEL, COMPRISING A CRAWLER TRACTOR MOVABLE ON GROUND LEVEL, A PAIR OF SPACED PARALLEL LIFTING ARM PIVOTALLY CARRIED BY THE TRACTOR AND TILTABLE IN PARALLEL VERTICAL PLANES BELOW THE TRACTOR TO EXTEND INTO THE PIT, A PAIR OF SPACED PARALLEL PLUNGERS CARRIED BY THE TRACTOR, SAID PLUNGERS BEING AXIALLY EXTENSIBLE INTO THE PIT BELOW GROUND LEVEL AND RETRACTABLE THEREFROM, A RECTANGULAR FRAME STRUCTURE HAVING SPACED SIDE WALLS, A FRONT END WALL AND A REAR END WALL, SAID ARMS AND PLUNGERS HAVING LOWER ENDS PIVOTALLY ATTACHED AT FOUR SPACED CORNER POINTS TO THE REAR END WALL FOR RAISING AND LOWERING THE FRAME STRUCTURE VERTICALLY AND FOR TILTING THE FRAME STRUC-
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) | 1966-05-27 | 1966-11-26 | 1967-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-27 | 1970-11-26 | 1971-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-27 | 1974-11-26 | 1975-05-28 | $7700.00 | Window Closed / Lapsed |