US3656286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mowing machine
Assignee: Individual
•
Filing: 1970-10-30
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Granted: 1972-04-18
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Expires: 1990-10-30
Abstract
Abstract A mowing machine having at least one mower assembly with rotary blade means driven by a motor or the like and an upright shaft upon which the blade assembly is journaled. The blade assemblies are each supported by an upwardly concave dished disk glide or skid having a generally flat surface parallel to the ground in its central region and extending upwardly and outwardly with uniform light curvature. The rim of the dish is bent outwardly in a flange parallel to the ground surface so that the slide or skid is stiffened.
Inventors
- 👤 Joseph Glunk
- 👤 Heinz Gnadler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:14
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/73; A01D34/733; A01D34/736
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
103 words
A rotary blade mower comprising a mower body rotatable about a substantially vertical axis; blade means carried by said body and extending outwardly therefrom at the lower end of said body; a shaft supporting and extending axially of said body therebelow and within the orbit of said blade means; and an upwardly concave dished-disk support skid mounted on said support shaft and engaging the ground, said skid having a central planar surface adapted to be in contact with the ground, an upwardly and outwardly curved outer portion of large radIus of curvature, and a rim extending outwardly and coplanar with the central portion.
Claim 2
Dependent Claim
103 words
A rotary blade mower comprising a mower body rotatable about a substantially vertical axis; blade means carried by said body and extending outwardly therefrom at the lower end of said body; a shaft supporting and extending axially of said body therebelow and within the orbit of said blade means; and an upwardly concave dished-disk support skid mounted on said support shaft and engaging the ground, said skid having a central planar surface adapted to be in contact with the ground, an upwardly and outwardly curved outer portion of large radIus of curvature, and a rim extending outwardly and coplanar with the central portion.
Claim 3
Dependent Claim
45 words
The mower defined in claim 1 wherein said dished-disk skid is circular and said body is provided with a downwardly and outwardly divergent frustoconical plate carrying said blade means, said skid having an outer diameter at least equal to the outer diameter of said plate.
Claim 4
Dependent Claim
24 words
The mower defined in claim 2 wherein said skid is composed of sheet metal and is recessed inwardly in axial alignment with said shaft.
Claim 5
Dependent Claim
19 words
The mower defined in claim 3, further comprising means within said skid for rotatably mounting same upon said shaft.
Claim 6
Dependent Claim
55 words
The mower defined in claim 4 wherein said blade means includes a plurality of blades mounted on said blade and extending downwardly and outwardly therefrom, said blades having free ends lying in a first horizontal plane below said rim and said plate having a lower edge lying in a second horizontal plane above said rim.
Claim 7
Dependent Claim
29 words
The mower defined in claim 5 wherein said skid has an axial height H and said outer portion has a radius of curvature equal approximately from 2H to 10H.
Claim 8
Dependent Claim
21 words
The mower defined in claim 6, further comprising means for swingably mounting said blades along the inner surface of said plate.
Claim 9
Dependent Claim
51 words
The mower defined in claim 7 wherein the last-mentioned means includes a pin swingably supporting each of said blades, and a respective leaf spring carrying said pin and fixed to said plate but spaced therefrom in the region of the pin by at least four times the thickness of said blade.
Claim 10
Dependent Claim
35 words
The mower defined in claim 8 wherein said plate is provided with an inwardly open recess at each of said blades, each of said pins being biased by its leaf spring into a respective recess.
Claim 11
Dependent Claim
13 words
The mower defined in claim 9 wherein said body is a cylindrical drum.
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) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |