Patent US3186151A successfully refreshed from Google Patents.
US3186151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cutters for grass and other vegetable matter
Assignee: Wilkinson Sword Ltd
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Filing: 1963-01-30
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Granted: 1965-06-01
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Expires: 1983-01-30
Abstract
No abstract record available.
Inventors
- 👤 Bernard S Hansom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:06
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/695; A01D2101/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A MACHINE FOR CUTTING GRASS AND LIKE VEGETABLE MATTER COMPRISING AN OUTER SHELL, AN INNER SHELL, SAID INNER SHELL BEING COAXIAL WITH SAID OUTER SHELL AND OF SMALLER CROSSSECTION TO FORM A PASSAGE OF ANNULAR CROSS-SECTION BETWEEN SAID INNER SHELL AND SAID OUTER SHELL, A MOTOR MOUNTED WITHIN SAID INNER SHELL, AN AIR-COMPRESSER ROTOR MOUNTED ADJACENT THE UPPER END OF SAID PASSAGE, SAID MOTOR BEING COUPLED TO SAID AIR-COMPRESSOR ROTOR TO ROTATE SAID AIRCOMPRESSOR ROTOR FOR DRIVING AIR THROUGH SAID ANNULAR SECTION PASSAGE WHEREBY AN ANNULAR JET OF COMPRESSED AIR IS FORMED AT THE LOWER END OF SAID PASSAGE PROVIDING AN AIRCUSHION BETWEEN THE MACHINE AND GROUND, AND A ROTARY CUTTING MEMBER MOUNTED ON THE UNDERSIDE OF SAID INNER SHELL, SAID ROTARY CUTTING MEMBER ALSO BEING COUPLED TO SAID MOTOR.
Claim 2
Dependent Claim
130 words
A MACHINE FOR CUTTING GRASS AND LIKE VEGETABLE MATTER COMPRISING AN OUTER SHELL, AN INNER SHELL, SAID INNER SHELL BEING COAXIAL WITH SAID OUTER SHELL AND OF SMALLER CROSSSECTION TO FORM A PASSAGE OF ANNULAR CROSS-SECTION BETWEEN SAID INNER SHELL AND SAID OUTER SHELL, A MOTOR MOUNTED WITHIN SAID INNER SHELL, AN AIR-COMPRESSER ROTOR MOUNTED ADJACENT THE UPPER END OF SAID PASSAGE, SAID MOTOR BEING COUPLED TO SAID AIR-COMPRESSOR ROTOR TO ROTATE SAID AIRCOMPRESSOR ROTOR FOR DRIVING AIR THROUGH SAID ANNULAR SECTION PASSAGE WHEREBY AN ANNULAR JET OF COMPRESSED AIR IS FORMED AT THE LOWER END OF SAID PASSAGE PROVIDING AN AIRCUSHION BETWEEN THE MACHINE AND GROUND, AND A ROTARY CUTTING MEMBER MOUNTED ON THE UNDERSIDE OF SAID INNER SHELL, SAID ROTARY CUTTING MEMBER ALSO BEING COUPLED TO SAID MOTOR.
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) | 1968-05-31 | 1968-11-30 | 1969-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-31 | 1972-11-30 | 1973-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-31 | 1976-11-30 | 1977-06-01 | $7700.00 | Window Closed / Lapsed |