US3751191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic pump and cooler unit
Assignee: Mott Corp
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Filing: 1971-02-02
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Granted: 1973-08-07
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Expires: 1991-02-02
Abstract
Abstract An arrangement of a hydraulic pump and cooler unit for a hydrostatic drive mechanism, the unit comprises pump means, blower means, duct means, and heat exchanger means. The pump means and blower means are mounted on a single shaft so that they are coaxial and have common drive means. The heat exchanger means is located within the duct means, and both of said means are located directly above the blower means. The unit may include a reservoir means arranged side-by-side with the duct means and above the pump means. Said reservoir means may also include filtering means therein.
Inventors
- 👤 C Mott
- 👤 T Middlesworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:35
CPC Classifications
F; F04; F04D; F04D13/00; A; A01; A01D; A01D69/00; A01D69/03; F04D29/00; F04D29/70; F15; F15B; F15B21/00; F15B21/04; F15B21/042; F15B21/0423; F28; F28F; F28F1/00; F28F1/02; F15B1/00; F15B1/26; F15B2211/00; F15B2211/20; F15B2211/205; F15B2211/2053; F15B2211/20538
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
137 words
A hydraulic pump and cooler unit, comprising hydraulic pump means, cooler means comprising blower means, duct means connected to and extending radially from said blower means for receiving air discharged from said blower means, and heat exchanger means in said duct means, said heat exchanger means being operable to cool hydraulic fluid pumped by said pump means, and reservoir means communicating with said heat exchanger means and said pump means and adapted to contain hydraulic fluid pumped by said pump means, said pump means and said blower means being arranged in coaxial relation with and close to each other and said reservoir means being located adjacent said pump means and arranged in side-by-side contiguous relation with said duct means, whereby the components of said unit are compactly arranged and the overall size of said unit is minimized.
Claim 2
Dependent Claim
137 words
A hydraulic pump and cooler unit, comprising hydraulic pump means, cooler means comprising blower means, duct means connected to and extending radially from said blower means for receiving air discharged from said blower means, and heat exchanger means in said duct means, said heat exchanger means being operable to cool hydraulic fluid pumped by said pump means, and reservoir means communicating with said heat exchanger means and said pump means and adapted to contain hydraulic fluid pumped by said pump means, said pump means and said blower means being arranged in coaxial relation with and close to each other and said reservoir means being located adjacent said pump means and arranged in side-by-side contiguous relation with said duct means, whereby the components of said unit are compactly arranged and the overall size of said unit is minimized.
Claim 3
Dependent Claim
43 words
The combination of claim 1, wherein drive means is provided for driving said pump means and said blower means, and said reservoir means is adapted to receive hydraulic fluid from said heat exchanger means and to supply hydraulic fluid to said pump means.
Claim 4
Dependent Claim
40 words
The combination of claim 2, in which said pump means includes a shaft, said blower means includes a rotor mounted on said shaft, and said drive means is connected to said rotor for effecting rotation thereof and of said shaft.
Claim 5
Dependent Claim
24 words
The combination of claim 2, in which said drive means comprises a pulley, and said pulley is mounted on one end of said rotor.
Claim 6
Dependent Claim
27 words
The combination of claim 2, wherein filter means is provided in said reservoir means for filtering hydraulic fluid flowing from said reservoir means into said pump means.
Claim 7
Dependent Claim
47 words
The combination of claim 1, in which said reservoir means and said duct means are elongated and have a common wall, said pump means is connected to one end of said reservoir means, and said blower means is connected to the corresponding end of said duct means.
Claim 8
Dependent Claim
43 words
The combination of claim 6, in which said reservoir means and said duct means are arranged in an upright position, and said pump means and said blower means are respectively connected to the lower ends of said reservoir means and said duct means.
Claim 9
Dependent Claim
48 words
The combination of claim 7, in which said duct means is open at its upper end, said blower means including a rotor having an axial inlet and a housing having an upwardly opening outlet, and said blower outlet is connected to the lower end of said duct means.
Claim 10
Dependent Claim
99 words
In a hydraulic pump and cooler unit including reservoir means adapted to contain a supply of hydraulic fluid and heat exchanger means adapted to cool hydraulic fluid, the improvement comprising fluid conducting structure having spaced ends, one of said ends being adapted to be connected to a source of hydraulic fluid, said heat exchanger means being interposed between said ends of said structure, said structure having at least one opening therein upstream from said heat exchanger means for discharging hydraulic fluid into said reservoir means, and said structure downstream from said heat exchanger means communicating with said reservoir means.
Claim 11
Dependent Claim
99 words
In a hydraulic pump and cooler unit including reservoir means adapted to contain a supply of hydraulic fluid and heat exchanger means adapted to cool hydraulic fluid, the improvement comprising fluid conducting structure having spaced ends, one of said ends being adapted to be connected to a source of hydraulic fluid, said heat exchanger means being interposed between said ends of said structure, said structure having at least one opening therein upstream from said heat exchanger means for discharging hydraulic fluid into said reservoir means, and said structure downstream from said heat exchanger means communicating with said reservoir means.
Claim 12
Dependent Claim
31 words
The combination of claim 9, wherein said opening in said structure directs hydraulic fluid flowing therethrough away from the surface of hydraulic fluid in said reservoir means to minimize aeration thereof.
Claim 13
Dependent Claim
38 words
The combination of claim 9, wherein said structure is closed at its other end, and said structure downstream of said heat exchanger means has at least one other opening therein for discharging hyDraulic fluid into said reservoir means.
Claim 14
Dependent Claim
28 words
The combination of claim 11, wherein said other opening directs hydraulic fluid flowing therethrough away from the surface of hydraulic fluid in said reservoir means to minimize aeration.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |