US3645643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal and lubrication system for rotating machinery
Assignee: Carrier Corp
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Filing: 1970-05-11
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Granted: 1972-02-29
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Expires: 1990-05-11
Abstract
Abstract An arrangement for preventing leakage of gas from a compressor by supplying fluid at a pressure that always exceeds the pressure of the gas by a predetermined value to a location of likely leakage wherein means are provided to assure flow of the fluid through the location over a wide variation in the pressure of the gas so that adequate cooling of the parts involved may be always obtained. Included in the arrangement is a pressure regulator valve unit constructed so that the operating parts will function despite minor misalignment such as may be encountered in assembling the parts.
Inventors
- 👤 Maurice B King
- 👤 James W Endress
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:27
CPC Classifications
F; F01; F01D; F01D11/00; F01D11/02; F01D11/04; F04; F04D; F04D29/00; F04D29/08; F04D29/10; F04D29/102; F04D29/104
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
177 words
A gas compressor comprising: a. casing means forming an enclosure for the operating parts of the compressor, b. bearing means arranged within the casinG, c. a rotary shaft supported within the bearings, d. an impeller secured to the shaft for receiving gas at a relatively low pressure and discharging it at a relatively high pressure, e. shaft-sealing means disposed within the casing, f. means arranged within the casing forming a chamber for accommodating the shaft-sealing means, the chamber having an inlet and an outlet, g. means for supplying fluid under pressure in excess of the pressure of the gas at a preselected location in the compressor to the chamber accommodating the sealing means to inhibit leakage of gas along the shaft, said means supplying the fluid to the chamber inlet for passage through the chamber outlet, and h. means responsive to pressure of fluid within the chamber regulating the flow of fluid from the chamber whereby passage of sealing fluid through said chamber at a rate sufficient to ensure adequate cooling of the sealing means is maintained.
Claim 2
Dependent Claim
177 words
A gas compressor comprising: a. casing means forming an enclosure for the operating parts of the compressor, b. bearing means arranged within the casinG, c. a rotary shaft supported within the bearings, d. an impeller secured to the shaft for receiving gas at a relatively low pressure and discharging it at a relatively high pressure, e. shaft-sealing means disposed within the casing, f. means arranged within the casing forming a chamber for accommodating the shaft-sealing means, the chamber having an inlet and an outlet, g. means for supplying fluid under pressure in excess of the pressure of the gas at a preselected location in the compressor to the chamber accommodating the sealing means to inhibit leakage of gas along the shaft, said means supplying the fluid to the chamber inlet for passage through the chamber outlet, and h. means responsive to pressure of fluid within the chamber regulating the flow of fluid from the chamber whereby passage of sealing fluid through said chamber at a rate sufficient to ensure adequate cooling of the sealing means is maintained.
Claim 3
Dependent Claim
30 words
A gas compressor as set forth in claim 1 wherein said last-mentioned means includes a variable pressure valve communicating with said chamber so as to provide a second outlet therefrom.
Claim 4
Dependent Claim
29 words
A gas compressor as set forth in claim 2 wherein said variable pressure valve means is operable in response to a predetermined pressure of the fluid within the chamber.
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) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |