US3602425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Evaporative cooling device for a centrifuge rotary seal
Assignee: Beckman Coulter Inc
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Filing: 1969-04-09
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Granted: 1971-08-31
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Expires: 1989-04-09
Abstract
Abstract A device for cooling a rubbing seal interface between a stationary and a rotating surface. The device includes a hermetically sealed cooled container having thermally conductive walls partially filled with a volatile liquid with a face portion forming the stationary surface. In operation the heat generated at the interface causes the volatile liquid to evaporate and then condense by absorption of heat at the cooled container walls.
Inventors
- 👤 William L Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:50
CPC Classifications
B; B04; B04B; B04B11/00; B04B11/02; Y; Y10; Y10S; Y10S277/00; Y10S277/907; Y10S277/93
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
180 words
In an ultracentrifuge apparatus including a rotor, a rotary member secured for rotation with the rotor having tubes for supplying liquid to the interior of said rotor and removing liquid therefrom and a stationary member including liquid supply and removal passages respectively communicating with said tubes at a rotating seal interface formed between a face of the stationary member and a face of the rotary member, the improvement comprising: a cooling device for the rotating seal interface including a hermetically sealed container having thermally conductive lower, side, and upper wall portions, said lower wall portion forming a major portion of the stationary face of the rotary seal interface, a volatile liquid disposed in and partially filling said container, said liquid being in thermal contact with said lower wall portion and means for cooling the upper and sidewall portions of said container, whereby heat generated at said face causes the volatile liquid to evaporate with the resulting vapor being caused to condense by heat absorbed from the vapor at the cooled container walls in a closed loop, regenerative heat transfer cycle.
Claim 2
Dependent Claim
180 words
In an ultracentrifuge apparatus including a rotor, a rotary member secured for rotation with the rotor having tubes for supplying liquid to the interior of said rotor and removing liquid therefrom and a stationary member including liquid supply and removal passages respectively communicating with said tubes at a rotating seal interface formed between a face of the stationary member and a face of the rotary member, the improvement comprising: a cooling device for the rotating seal interface including a hermetically sealed container having thermally conductive lower, side, and upper wall portions, said lower wall portion forming a major portion of the stationary face of the rotary seal interface, a volatile liquid disposed in and partially filling said container, said liquid being in thermal contact with said lower wall portion and means for cooling the upper and sidewall portions of said container, whereby heat generated at said face causes the volatile liquid to evaporate with the resulting vapor being caused to condense by heat absorbed from the vapor at the cooled container walls in a closed loop, regenerative heat transfer cycle.
Claim 3
Dependent Claim
175 words
In a rotating seal assembly including a stationary seal member, a rotating seal member, and means for urging the stationary and rotating seal members into sealing engagement to form a rotating sealing interface between the two engaging faces of the sealing members, the improvement comprising: a closed container carried by one of said sealing members, said container fabricated of thermal conductive material and having upper, lower, and sidewalls, said lower wall forming a portion of the sealing engaging face of said sealing member, a volatile liquid disposed in said container with the liquid being in contact with the lower wall of said container, a cooling jacket surrounding the upper and sidewalls of said container, and means for circulating a cooling liquid through said cooling jacket whereby heat generated at said rotating seal interface is transferred through said lower wall of said container to said liquid causing the liquid to evaporate with the resulting vapor being caused to condense by heat absorbed from the vapor at the cooled container walls in a closed-loop heat transfer cycle.
Claim 4
Dependent Claim
175 words
In a rotating seal assembly including a stationary seal member, a rotating seal member, and means for urging the stationary and rotating seal members into sealing engagement to form a rotating sealing interface between the two engaging faces of the sealing members, the improvement comprising: a closed container carried by one of said sealing members, said container fabricated of thermal conductive material and having upper, lower, and sidewalls, said lower wall forming a portion of the sealing engaging face of said sealing member, a volatile liquid disposed in said container with the liquid being in contact with the lower wall of said container, a cooling jacket surrounding the upper and sidewalls of said container, and means for circulating a cooling liquid through said cooling jacket whereby heat generated at said rotating seal interface is transferred through said lower wall of said container to said liquid causing the liquid to evaporate with the resulting vapor being caused to condense by heat absorbed from the vapor at the cooled container walls in a closed-loop heat transfer cycle.
Claim 5
Dependent Claim
18 words
The improvement as defined in claim 2 wherein said closed container is carried by said stationary seal member.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |