Patent US5273292A successfully refreshed from Google Patents.
Patent US3762138A successfully refreshed from Google Patents.
US3762138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mower blade
Assignee: Individual
•
Filing: 1972-06-15
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Granted: 1973-10-02
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Expires: 1992-06-15
Abstract
Abstract A mower blade assembly including a blade bar and cutter elements removably attached to the blade bar for mounting on a perpendicular power driven shaft wherein the cutter elements are positioned adjacent the ends and leading edge of the blade bar including means for releasably securing the cutter elements to the blade bar.
Inventors
- 👤 R Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:29
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/73; A01D34/733
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
126 words
A mower blade assembly including a blade bar and cutting elements attached thereto comprising: a. a rectangular rotatable blade for supporting a cutting element at each end of the bar; b. each cutting element being formed from a single piece of material having a bottom portion extending along the lower surface of the blade bar folded downwardly and outwardly from its rear edge in a parallel plane and adjacent the bottom portion and extending beyond the leading edge of the bar to form a cutting portion, the forward portion of the lower portion folded upwardly over the leading edge and upper surface of the blade bar and means for securing the cutting portion, bottom portion and upper portion of the cutting element to the blade bar.
Claim 2
Dependent Claim
126 words
A mower blade assembly including a blade bar and cutting elements attached thereto comprising: a. a rectangular rotatable blade for supporting a cutting element at each end of the bar; b. each cutting element being formed from a single piece of material having a bottom portion extending along the lower surface of the blade bar folded downwardly and outwardly from its rear edge in a parallel plane and adjacent the bottom portion and extending beyond the leading edge of the bar to form a cutting portion, the forward portion of the lower portion folded upwardly over the leading edge and upper surface of the blade bar and means for securing the cutting portion, bottom portion and upper portion of the cutting element to the blade bar.
Claim 3
Dependent Claim
80 words
The mower blade assembly as claimed in claim 1 wherein an aperture is formed in the blade bar adjacent the end thereof, the cutting element having a corresponding aperture formed therein of less diameter than the aperture in the blade bar, the cutting element having a recess surrounding the aperture slightly depressed in the bar aperture for a predetermined distance and a rivet means slidably through the aperture of the cutting element for securing the same to the blade bar.
Claim 4
Dependent Claim
52 words
A mower blade assembly as claimed in claim 2 wherein the rivet extends through the aperture in the cutting element and the corresponding aperture in the blade bar in which the outer ends of the rivet do not extend beyond the plane of the bottom and top surfaces of the cutting element.
Claim 5
Dependent Claim
34 words
A mower blade assembly as claimed in claim 2 wherein the portion of each cutting element extending over the upper surface of the blades is provided with an upturned fin adjacent its rear edge.
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) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |