Patent US5791132A successfully refreshed from Google Patents.
US5791132A
Expired / Lapsed
US
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Mulching mower
Assignee: Wiedenmann GmbH
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Filing: 1995-12-21
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Granted: 1998-08-11
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Expires: 2015-12-21
Abstract
Abstract The invention relates to a mowing machine with at least one blade (4) rotating about a spindle (3), preferably with two mowing cutters (6) arranged symmetrically to the spindle, and preferably with several and especially three blades (4) rotating about parallel spindles (3), which is/are arranged in a mower housing (1) with the cuttings ejected towards the rear (regarded from the direction of mowing). In order to provide a mulch from the cuttings with such a mower, it is proposed that the blade(s) (4) be contained in the ejection direction by a wall system (8, 9).
Inventors
- 👤 Georg Wiedenmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:14
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/001; A01D34/005; A01D2101/00; Y; Y10; Y10S; Y10S56/00; Y10S56/20
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
125 words
A mowing machine, comprising: (a) a housing; (b) at least two sickle mowing blades rotatably driven in the same rotational direction about respective vertical spindles, said mowing blades being arranged within the housing; (c) a skirt associated with each mowing blade and depending from the housing, each skirt prevents the immediate ejection of cut material by substantially enclosing its respective mowing blade except for a section defined by a common vertical plane in which the ends of both longitudinal axes of the adjacent sickle mowing blades extend; (d) a deflector means attached to the housing in such a manner as to bridge said common vertical plane to provide a means to discharge cut material from one sickle mowing blade to an adjacent sickle mowing blade.
Claim 2
Dependent Claim
125 words
A mowing machine, comprising: (a) a housing; (b) at least two sickle mowing blades rotatably driven in the same rotational direction about respective vertical spindles, said mowing blades being arranged within the housing; (c) a skirt associated with each mowing blade and depending from the housing, each skirt prevents the immediate ejection of cut material by substantially enclosing its respective mowing blade except for a section defined by a common vertical plane in which the ends of both longitudinal axes of the adjacent sickle mowing blades extend; (d) a deflector means attached to the housing in such a manner as to bridge said common vertical plane to provide a means to discharge cut material from one sickle mowing blade to an adjacent sickle mowing blade.
Claim 3
Dependent Claim
47 words
The mowing machine according to claim 1 characterized in that each skirt is subdivided into a rearward skirt (9) and a forward skirt (8), the forward skirt (8) is positioned in front of its respective mowing blade (4) in the direction of travel during the mowing process.
Claim 4
Dependent Claim
23 words
Mowing machine according to claim 2, characterized in that the rearward skirt (9) is bolted directly or indirectly to the mower housing (1).
Claim 5
Dependent Claim
46 words
Mowing machine according to claim 2 characterized in that the skirts (8, 9), and particularly the rearward skirt (9) is attached to the mower housing (1), vertically adjustable as a unit or in several parts with respect to the surface of the ground to be treated.
Claim 6
Dependent Claim
31 words
Mowing machine according to claim 4, characterized in that the adjustable skirts (8, 9) are adjustable by means of slots extending perpendicularly to the ground and connecting bolts (19) passing therethrough.
Claim 7
Dependent Claim
18 words
The mowing machine according to claim 2 characterized in that the forward skirts are welded to the housing.
Claim 8
Dependent Claim
17 words
Mowing machine according to claim 1 characterized in that the deflector (10) is a sheet metal connector.
Claim 9
Dependent Claim
28 words
Mowing machine according to claim 1 characterized in that the deflector (10) has the form of a roof-shaped arch oriented toward the ground, and specifically of V-shaped cross-section.
Claim 10
Dependent Claim
43 words
The mowing machine according to claim 8, characterized in that the apex of the V-shaped deflector is directed downwards away from the housing and the inclined surfaces generally project tangentially into the conveying path of the cut material of its respective mowing blade.
Claim 11
Dependent Claim
31 words
Mowing machine according to claim 1 characterized in that the deflector (10) is inserted by its diagonally opposite corner regions peripherally into the skirts (8, 9) surrounding the mowing blades (4).
Claim 12
Dependent Claim
38 words
Mowing machine according to claim 1 characterized in that the mower housing (1) has at least two, and preferably four support wheels (7), of which at least one and preferably two are journaled rotatably within a bearing (21).
Claim 13
Dependent Claim
21 words
Mowing machine according to claim 11 characterized in that the support wheels (7) are attached to housing (1) at adjustable heights.
Claim 14
Dependent Claim
39 words
The mowing machine according to claim 1 further characterized in that each of said sickle mowing blades has at least two cutter portions on the leading edge of each sickle mowing blade arranged symmetrically with respect to said spindle.
Claim 15
Dependent Claim
34 words
The mowing machine according to claim 13 characterized in that at least a portion of of the trailing edge of each mowing blade (4) is bent in the direction toward the mower housing (1).
References Cited (Backward Citations)
US5305589A
Cited
US5465564A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-08-10 | 2002-02-09 | 2002-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-08-10 | 2006-02-09 | 2006-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-08-10 | 2010-02-09 | 2010-08-11 | $7700.00 | Window Closed / Lapsed |