US4996828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for cutting vegetable material, with a rotatable tool carrier for cutting tools
Assignee: Individual
•
Filing: 1990-04-18
•
Granted: 1991-03-05
•
Expires: 2010-04-18
Abstract
Abstract A machine for cutting vegetable material, such as a mowing or chopping machine, comprises at least one rotatable tool carrier and tools pivotally mounted on said tool carrier by pins which are parallel to the axis of rotation of the tool carrier. In order to provide a machine which has a robust structure and facilitates the mounting and removal of the tools, each pin carries at least one tool and at opposite ends is movably mounted in two slots, which extend radially with respect to the axis of the rotation of the tool carrier and are formed either in two opposite disks, which constitute the tool carrier, or in lugs, which are secured to and radially protrude from the body of the tool carrier. Each slot has a radially outer portion provided on the outside with a cover for preventing an axial displacement of the associated pin.
Inventors
- 👤 Franz Jetzinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:27
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/73; A01D34/733; A01D34/736
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
223 words
In a machine for cutting vegetable material, comprising at least one tool carrier, which is mounted to be rotatable about an axis of rotation and has two mutually opposite broadside surfaces facing in the direction of said axis, a plurality of pins, which are mounted in said tool carrier and are circumferentially spaced apart and parallel to said axis of rotation, and a plurality of tools, which are pivoted to said tool carrier by said pins, the improvement residing in that at least one of said tools is mounted on each of said pins, said tool carrier is formed with circumferentially spaced apart pairs of slots, which register and are spaced apart in the direction of said axis and extend radially with respect to said axis and open in both said broadside surfaces and each of which has a radially inner end portion and a radially outer end portion, each of said pins has mutually opposite ends, which extend into and are movable along said slots of one of said pairs, and covering means are mounted on said tool carrier and cover said radially outer end portions of said slots on both said broadside surfaces to prevent an axial displacement of each of said pins when its ends are disposed in said radially outer end portions of one of said pairs of slots.
Claim 2
Dependent Claim
223 words
In a machine for cutting vegetable material, comprising at least one tool carrier, which is mounted to be rotatable about an axis of rotation and has two mutually opposite broadside surfaces facing in the direction of said axis, a plurality of pins, which are mounted in said tool carrier and are circumferentially spaced apart and parallel to said axis of rotation, and a plurality of tools, which are pivoted to said tool carrier by said pins, the improvement residing in that at least one of said tools is mounted on each of said pins, said tool carrier is formed with circumferentially spaced apart pairs of slots, which register and are spaced apart in the direction of said axis and extend radially with respect to said axis and open in both said broadside surfaces and each of which has a radially inner end portion and a radially outer end portion, each of said pins has mutually opposite ends, which extend into and are movable along said slots of one of said pairs, and covering means are mounted on said tool carrier and cover said radially outer end portions of said slots on both said broadside surfaces to prevent an axial displacement of each of said pins when its ends are disposed in said radially outer end portions of one of said pairs of slots.
Claim 3
Dependent Claim
13 words
The improvement set forth in claim 1 as applied to a mowing machine.
Claim 4
Dependent Claim
13 words
The improvement set forth in claim 1 as applied to a chopping machine.
Claim 5
Dependent Claim
46 words
The improvement set forth in claim 1 as applied to a machine in which said tool carrier comprises two disks, which are spaced apart in the direction of said axis, wherein said slots of each of said pairs are formed in respective ones of said disks.
Claim 6
Dependent Claim
72 words
The improvement set forth in claim 1, wherein said tool carrier comprises a tool carrier body, which is mounted to be rotatable about said axis of rotation, and a plurality of circumferentially spaced apart pairs of lugs, which protrude substantially radially from said body and are spaced apart in the direction of said axis and formed with said broadside surfaces, and each of said lugs is formed with one of said slots.
Claim 7
Dependent Claim
57 words
The improvement set forth in claim 5, wherein the lugs of each of said pairs thereof are interconnected to form a lug unit and said lug unit is pivoted to said tool carrier on an axis which is substantially parallel to said axis of rotation and with a radial play with respect to said axis of rotation.
Claim 8
Dependent Claim
28 words
The improvement set forth in claim 6, wherein said lug unit is pivoted to said tool carrier with a circumferential play with respect to said axis of rotation.
Claim 9
Dependent Claim
46 words
The improvement set forth in claim 6, as applied to a machine in which said tool carrier comprises two disks, which are spaced apart in the direction of said axis, wherein said slots of each of said pairs are formed in respective ones of said disks.
Claim 10
Dependent Claim
76 words
The improvement set forth in claim 1 as applied to a machine in which said tool carrier is mounted to be rotatable about a vertical axis of rotation and has top and bottom broadside surfaces facing in the direction of said axis, wherein said covering means leave said radially inner end portion of each of said slots exposed on said bottom broadside in an area which is smaller than the cross-section of each of said pins.
Claim 11
Dependent Claim
34 words
The improvement set forth in claim 1, wherein each of said slots is defined at said radially outer end portion by oblique side faces so that said radially outer end portion is substantially cardioid-shaped.
Claim 12
Dependent Claim
70 words
The improvement set forth in claim 1 as applied to a machine in which said tool carrier is mounted to be rotatable about a horizontal axis of rotation, wherein a plurality of springs are mounted in said tool carrier and extend between said radially inner end portions of said slots of respective pairs thereof and each of said springs is adapted to be forced radially inwardly to clear said slots.
Claim 13
Dependent Claim
54 words
The improvement set forth in claim 11, as applied to a machine in which said tool carrier comprises two disks, which are spaced apart in the direction of said axis, wherein said slots of each of said pairs are formed in respective ones of said disks, and said springs extend between said two disks.
Claim 14
Dependent Claim
87 words
The improvement set forth in claim 11, wherein said tool carrier comprises a tool carrier body, which is mounted to be rotatable about said axis of rotation, and a plurality of circumferentially spaced apart pairs of lugs, which protrude substantially radially from said body and are spaced apart in the direction of said axis and formed with said broadside surfaces, each of said lugs is formed with one of said slots, and each of said springs extends between the lugs of one of said pairs of lugs.
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) | 1994-03-04 | 1994-09-03 | 1995-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-03-04 | 1998-09-03 | 1999-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-03-04 | 2002-09-03 | 2003-03-05 | $7700.00 | Window Closed / Lapsed |