US3220170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vegetation mower and blade
Assignee: Industrial Products Corp
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Filing: 1964-09-17
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Granted: 1965-11-30
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Expires: 1984-09-17
Abstract
No abstract record available.
Inventors
- 👤 Harry M Smith
- 👤 Harry M Swindler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:44
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D2101/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
148 words
FOR USE WITH A VEGETATION MOWER OF THE ROTARY TYPE A CUTTING BLADE COMPRISING: (A) A BAR MEMBER HAVING A CENTRAL PORTION AND OPPOSED END PORTIONS; (B) SAID CENTRAL PORTION OF SAID BAR MEMBER INCLUDING A PAIR OF RECESSED POCKETS DISPOSD ON OPPOSITE SIDES OF THE CENTER THEREOF, SAID POCKETS OPENING IN OPPOSITE DIRECTIONS; (C) RESPECTIVELY OPPOSITE OUTER END PORTIONS OF SAID BAR MEMBER HAVING OPPOSITELY FACING CUTTING EDGES THEREON; (B) SAID RESPECTIVELY OPPOSITE OUTER END PORTIONS OF SAID BAR MEMBER HAVING UPSTANDING FINS THEREON, ONE SAID FIN BEING DISPOSED RESPECTIVELY BEHIND EACH OF SAID CUTTING EDGES WITH RESPECT TO THE DIRECTION OF ROTATION OF SAID BLADE; (E) SAID FINS TAPERING UPWARDLY FROM THE PLANE OF SAID BAR MEMBER AT AN ACUTE ANGELE; (F) SAID FINS BEING ELONGATED AND HAVING THEIR LONGITUDINAL AXES DISPOSED AT AN ACUTE ANGLE WITH RESPECT TO THE LONGITUDINAL AXIS OF SAID BAR MEMBER
Claim 2
Dependent Claim
148 words
FOR USE WITH A VEGETATION MOWER OF THE ROTARY TYPE A CUTTING BLADE COMPRISING: (A) A BAR MEMBER HAVING A CENTRAL PORTION AND OPPOSED END PORTIONS; (B) SAID CENTRAL PORTION OF SAID BAR MEMBER INCLUDING A PAIR OF RECESSED POCKETS DISPOSD ON OPPOSITE SIDES OF THE CENTER THEREOF, SAID POCKETS OPENING IN OPPOSITE DIRECTIONS; (C) RESPECTIVELY OPPOSITE OUTER END PORTIONS OF SAID BAR MEMBER HAVING OPPOSITELY FACING CUTTING EDGES THEREON; (B) SAID RESPECTIVELY OPPOSITE OUTER END PORTIONS OF SAID BAR MEMBER HAVING UPSTANDING FINS THEREON, ONE SAID FIN BEING DISPOSED RESPECTIVELY BEHIND EACH OF SAID CUTTING EDGES WITH RESPECT TO THE DIRECTION OF ROTATION OF SAID BLADE; (E) SAID FINS TAPERING UPWARDLY FROM THE PLANE OF SAID BAR MEMBER AT AN ACUTE ANGELE; (F) SAID FINS BEING ELONGATED AND HAVING THEIR LONGITUDINAL AXES DISPOSED AT AN ACUTE ANGLE WITH RESPECT TO THE LONGITUDINAL AXIS OF SAID BAR MEMBER
Claim 3
Dependent Claim
127 words
IN A VEGATATION MOWER OF THE ROTARY TYPE HAVING A BLADE ENCLOSING HOUSING AN A CUTTING BLADE ROTATABLY MOUNTED IN SAID HOUSING, THE IMPROVEMENTS COMPRISING: (A) SAID HOUSING HAVING A CENTRAL PORTION AND AN OUTER PERIPHERAL HELICALLY EXPANDING CHUTE PORTION AND AN OUTER ROUNDING SAID CENTRAL PORTION; SAID CHUTE PORTION COMPRISING INNER AND OUTER SPACED APART ARCUATE SKIRT WALLS AND A ROOF WALL EXTENDING THEREBETWEEN, SAID OUTER SKIRT WALL TERMINATING IN A HORIZONTAL PLANE BELOW SAID INNER SKIRT WALL; (B) SAID CENTAL PORTION OF SAID HOUSING BEING DEFINED BY WALL MEANS FORMING A DOWNWARDLY OPENING COMPARTMENT, SAID CENTRAL PORTION OF SAID HOUSING COMMUNICATING WITH SAID CHUTE UNDER THE LOWER EDGE OF SAID INNER SKIRT WALL, SAID WALL MEANS DEFINING SAID COMPARTMENT HAVING AT LEAST ONE OPENING THEREIN;
Claim 4
Dependent Claim
127 words
IN A VEGATATION MOWER OF THE ROTARY TYPE HAVING A BLADE ENCLOSING HOUSING AN A CUTTING BLADE ROTATABLY MOUNTED IN SAID HOUSING, THE IMPROVEMENTS COMPRISING: (A) SAID HOUSING HAVING A CENTRAL PORTION AND AN OUTER PERIPHERAL HELICALLY EXPANDING CHUTE PORTION AND AN OUTER ROUNDING SAID CENTRAL PORTION; SAID CHUTE PORTION COMPRISING INNER AND OUTER SPACED APART ARCUATE SKIRT WALLS AND A ROOF WALL EXTENDING THEREBETWEEN, SAID OUTER SKIRT WALL TERMINATING IN A HORIZONTAL PLANE BELOW SAID INNER SKIRT WALL; (B) SAID CENTAL PORTION OF SAID HOUSING BEING DEFINED BY WALL MEANS FORMING A DOWNWARDLY OPENING COMPARTMENT, SAID CENTRAL PORTION OF SAID HOUSING COMMUNICATING WITH SAID CHUTE UNDER THE LOWER EDGE OF SAID INNER SKIRT WALL, SAID WALL MEANS DEFINING SAID COMPARTMENT HAVING AT LEAST ONE OPENING THEREIN;
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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |