US3860064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relating to gas-moving device
Assignee: Ruckluft Patent AG
•
Filing: 1973-04-13
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Granted: 1975-01-14
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Expires: 1993-04-13
Abstract
Abstract A gas-moving device comprising a fan, a fluid operated drive for rotatably driving the fan, and a magnetic coupling for drivingly coupling the drive to the fan; and a heat-exchange apparatus incorporating such device.
Inventors
- 👤 Edmund Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:14
CPC Classifications
F; F04; F04D; F04D25/00; F04D25/02; F04D25/026; F04D25/04; Y; Y10; Y10S; Y10S165/00; Y10S165/228; Y10S165/302; Y10S165/316
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
116 words
A gas moving apparatus comprising a rotatable fan; a fluid casing; a shaft fixed to and extending in said casing; a fluid operated driver having a driving member mounted for rotation on said shaft and within said casing; a magnetic coupling for transmitting drive from said driving member to said fan, said coupling including a first coupling element operatively connected to said driving member and a second coupling element operatively connected to said fan; and a leak-free wall interposed between said first and second elements and closing one end of said casing, said shaft extending through and projecting beyond said leak-free wall, and said fan being mounted for rotation about the prOjecting part of said shaft.
Claim 2
Dependent Claim
116 words
A gas moving apparatus comprising a rotatable fan; a fluid casing; a shaft fixed to and extending in said casing; a fluid operated driver having a driving member mounted for rotation on said shaft and within said casing; a magnetic coupling for transmitting drive from said driving member to said fan, said coupling including a first coupling element operatively connected to said driving member and a second coupling element operatively connected to said fan; and a leak-free wall interposed between said first and second elements and closing one end of said casing, said shaft extending through and projecting beyond said leak-free wall, and said fan being mounted for rotation about the prOjecting part of said shaft.
Claim 3
Dependent Claim
15 words
Apparatus according to claim 1 in which said wall comprises a diaphragm of non-magnetic material.
Claim 4
Dependent Claim
38 words
Apparatus according to claim 1 in which each of said coupling elements is of ring shape, said coupling elements being mounted to lie in parallel planes, and being spaced from each other along an axis common to both.
Claim 5
Dependent Claim
29 words
Apparatus according to claim 3 in which said wall is planar and is interposed between said coupling elements in a plane parallel to the planes of said coupling elements.
Claim 6
Dependent Claim
21 words
Apparatus according to claim 3 in which said driver is a water turbine the rotor of which constitutes said driving member.
Claim 7
Dependent Claim
21 words
Apparatus according to claim 1 in combination with a heat exchanger positioned in the path of gas discharged by said fan.
Claim 8
Dependent Claim
30 words
Apparatus according to claim 1 in combination with a heat exchanger attached to said projecting part of said shaft and positioned in the path of gas delivered by said fan.
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) | 1978-01-13 | 1978-07-15 | 1979-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-13 | 1982-07-15 | 1983-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-13 | 1986-07-15 | 1987-01-14 | $7700.00 | Window Closed / Lapsed |