Patent US4030641A successfully refreshed from Google Patents.
US4030641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Implements for delivering particulate material to the ground
Assignee: Massey Ferguson Services NV
•
Filing: 1975-07-11
•
Granted: 1977-06-21
•
Expires: 1995-07-11
Abstract
Abstract A spreader for fertilizer or similar material has a metering mechanism for said material to vary the rate of spreading. The metering mechanism has two metering members in face-to-face contact defining a metering opening. A hydraulic ram moves the metering members so as to open and close the opening. An adjustable stop within the ram allows the ram's stroke to be changed. This changes the extent to which the ram can open the opening so that the ram can be supplied with fluid under sufficient pressure to overcome possible corrosion between the metering members.
Inventors
- 👤 Alfred J. Bailey
- 👤 Malcolm Dean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:23
CPC Classifications
A; A01; A01C; A01C17/00; A01C17/006
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
177 words
An implement for spreading particulate material on the ground comprising a frame, a hopper mounted on the frame for the particulate material, a spreading mechanism mounted on the frame below the hopper, and a metering mechanism supported on the frame to control the rate of passage of the particulate material from the hopper to the spreading mechanism, the metering mechanism comprising metering members in face-to-face contact defining at least one opening for the passage of particulate material from the hopper to the spreading mechanism, the metering members being supported on the frame for pivotal movement about a generally vertical axis and movable relative to each other to infinitely vary the size of said opening from closed to fully open, a double-acting hydraulic ram operably connected to the metering members to position the metering members relative to each other, a setting indicator to indicate the position of the metering members relative to each other and adjustable mounting means mounting the double-acting hydraulic ram on the frame, for adjusting the position of said opening relative to the spreading mechanism.
Claim 2
Dependent Claim
177 words
An implement for spreading particulate material on the ground comprising a frame, a hopper mounted on the frame for the particulate material, a spreading mechanism mounted on the frame below the hopper, and a metering mechanism supported on the frame to control the rate of passage of the particulate material from the hopper to the spreading mechanism, the metering mechanism comprising metering members in face-to-face contact defining at least one opening for the passage of particulate material from the hopper to the spreading mechanism, the metering members being supported on the frame for pivotal movement about a generally vertical axis and movable relative to each other to infinitely vary the size of said opening from closed to fully open, a double-acting hydraulic ram operably connected to the metering members to position the metering members relative to each other, a setting indicator to indicate the position of the metering members relative to each other and adjustable mounting means mounting the double-acting hydraulic ram on the frame, for adjusting the position of said opening relative to the spreading mechanism.
Claim 3
Dependent Claim
170 words
An implement for spreading particulate material on the ground comprising a frame, a hopper mounted on the frame for the particulate material, a spreading mechanism mounted on the frame below the hopper, and a metering mechanism supported on the frame to control the rate of passage of the particulate material from the hopper to the spreading mechanism, the metering mechanism comprising metering members in face-to-face contact defining at least one opening for the passage of particulate material from the hopper to the spreading mechanism, the metering members being mounted so as to be movable relative to each other to infinitely vary the size of said opening from closed to fully open, a double-acting hydraulic ram mounted on the frame, lever means operably connected to the metering members and the double acting hydraulic cylinder to position the metering members relative to each other, and adjustment means for adjusting the position of the double-acting hydraulic cylinder relative to the frame to adjust the position of said opening relative to the spreading mechanism.
Claim 4
Dependent Claim
170 words
An implement for spreading particulate material on the ground comprising a frame, a hopper mounted on the frame for the particulate material, a spreading mechanism mounted on the frame below the hopper, and a metering mechanism supported on the frame to control the rate of passage of the particulate material from the hopper to the spreading mechanism, the metering mechanism comprising metering members in face-to-face contact defining at least one opening for the passage of particulate material from the hopper to the spreading mechanism, the metering members being mounted so as to be movable relative to each other to infinitely vary the size of said opening from closed to fully open, a double-acting hydraulic ram mounted on the frame, lever means operably connected to the metering members and the double acting hydraulic cylinder to position the metering members relative to each other, and adjustment means for adjusting the position of the double-acting hydraulic cylinder relative to the frame to adjust the position of said opening relative to the spreading mechanism.
Claim 5
Dependent Claim
26 words
The implement of claim 2 for spreading particulate material wherein the metering members are supported on the frame for pivotal movement about a generally vertical axis.
References Cited (Backward Citations)
US1207251A
Cited
US2723782A
Cited
GB1055249A
Cited
US3586246A
Cited
DE1910372A1
Cited
US3815480A
Cited
US3905523A
Cited
US3931934A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-20 | 1980-12-20 | 1981-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-20 | 1984-12-20 | 1985-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-20 | 1988-12-20 | 1989-06-21 | $7700.00 | Window Closed / Lapsed |