Patent US4149954A successfully refreshed from Google Patents.
Patent US4256031A successfully refreshed from Google Patents.
US4256031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic circuit cooling system for silage compactors
Assignee: Blair Manufacturing Co Inc
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Filing: 1979-09-28
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Granted: 1981-03-17
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Expires: 1999-09-28
Abstract
Abstract A system for cooling hydraulic fluid in a hydraulic circuit utilized for operating a silage compressor wherein hydraulic fluid is circulated through a tank forming at least a portion of a wall along and in contact with which compressed silage is passed, thereby effecting a heat transfer from the hot hydraulic fluid in the tank to the relatively cool silage passing along the wall.
Inventors
- 👤 Kelly P. Ryan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:52
CPC Classifications
A; A01; A01F; A01F25/00; A01F25/16; A01F25/18; A01F25/14; A01F2025/145; Y; Y10; Y10S; Y10S60/00; Y10S60/912
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
60 words
In combination with silage compressing apparatus having a hydraulic system for forcing silage under compression through and in heat transfer relationship with a wall of an expanding chamber, hydraulic fluid cooling apparatus comprising a tank having a wall in thermal transfer relationship with said wall of the chamber, and means for circulating hydraulic fluid in said system through said tank.
Claim 2
Dependent Claim
60 words
In combination with silage compressing apparatus having a hydraulic system for forcing silage under compression through and in heat transfer relationship with a wall of an expanding chamber, hydraulic fluid cooling apparatus comprising a tank having a wall in thermal transfer relationship with said wall of the chamber, and means for circulating hydraulic fluid in said system through said tank.
Claim 3
Dependent Claim
81 words
In combination with silage compressing apparatus having a hydraulic circuit including a hydraulic pump and motor for rotating a toothed shaft for forcing silage under compression through an expanding chamber including an arcuate upwardly extending wall, hydraulic fluid cooling apparatus comprising a tank having a wall forming at least a portion of said arcuate wall, means connecting said tank into said hydraulic circuit for circulating hydraulic fluid therethrough, whereby relatively cool silage moving across said wall portion will remove heat therefrom.
Claim 4
Dependent Claim
81 words
In combination with silage compressing apparatus having a hydraulic circuit including a hydraulic pump and motor for rotating a toothed shaft for forcing silage under compression through an expanding chamber including an arcuate upwardly extending wall, hydraulic fluid cooling apparatus comprising a tank having a wall forming at least a portion of said arcuate wall, means connecting said tank into said hydraulic circuit for circulating hydraulic fluid therethrough, whereby relatively cool silage moving across said wall portion will remove heat therefrom.
References Cited (Backward Citations)
US4046068A
Cited
US3946543A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-16 | 1984-09-15 | 1985-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-16 | 1988-09-15 | 1989-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-16 | 1992-09-15 | 1993-03-17 | $7700.00 | Window Closed / Lapsed |