US3828574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary-injector type distributor
Assignee: Bertin Technologies SAS
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Filing: 1972-10-11
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Granted: 1974-08-13
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Expires: 1992-10-11
Abstract
Abstract The invention comprehends a rotary-injector type distributor interposed between a pressure fluid intake and one or more receiving pulse tubes, characterized in that the rotary injector has on either side of its ejection orifice a leading edge and a trailing edge, as considered in the direction of rotation, of an angular extent such that the leading edge can cover the receiving-tube entry past which the injector will move, the leading edge uncovering such entry only in proportion as the injector ejection orifice moves past the entry, and in turn the trailing edge gradually covers the entry in proportion as the injector ejection orifice departs from the entry, to ensure in both cases that in the tube-filling phase the fluid is not exhausted from the tube before having been operative therein.
Inventors
- 👤 R Verrien
- 👤 P Marchal
- 👤 J Fernand
- 👤 Marcotte J Boy
- 👤 J Simonnet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:42
CPC Classifications
C; C10; C10G; C10G5/00; C10G5/06; B; B01; B01D; B01D51/00; B01D51/10; F; F16; F16K; F16K11/00; F16K11/02; F16K11/08; F25; F25B; F25B9/00; F25B9/06; F25B9/065; F25J; F25J3/00; F25J3/06; F25J3/0605; F25J3/061; F25J3/063; F25J3/0635; F25J3/065; F25J2240/00; F25J2240/60; F25J2270/00; F25J2270/90; F25J2270/908; F25J2270/91; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86501
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
269 words
In a gas-cooling system of the pulse tube type wherein a gas undergoes intermittent temperature raising compression and temperature lowering expansion, comprising a plurality of pulse tubes having respective inlets located adjacent each other in circular succession, a chamber into which said inlets open, a rotary distributor having a duct rotating in said chamber and ending with a discharge orifice movable successively in front of each of said inlets in successive register therewith, and means for supplying a continuous flow of gas under pressure to said rotary distributor whereby said pulse tubes are intermittently fed with said gas as said discharge orifice moves past said inlets, the improvement comprising an arcuately extending leading edge fast with said duct and projecting ahead of said discharge orifice with respect to the rotational direction thereof to cause successively each of said inlets to convert from a first condition wherein the respective inlet freely communicates with said chamber into a second condition wherein said respective inlet is momentarily shut off therefrom by said leading edge in anticipation of a third condition wherein said respective inlet is in registry with said discharge orifice, and an opposite arcuately extending trailing edge fast with said duct and projecting beyond said discharge orifice with respect to the rotational direction thereof to cause successively each of said inlets, in subsequence to said third condition of registry therewith of said discharge orifice, to convert into a fourth condition wherein the respective inlet is momentarily shut off from said chamber by said trailing edge, in anticipation of a fifth condition wherein said respective inlet again freely communicates with said chamber.
Claim 2
Dependent Claim
269 words
In a gas-cooling system of the pulse tube type wherein a gas undergoes intermittent temperature raising compression and temperature lowering expansion, comprising a plurality of pulse tubes having respective inlets located adjacent each other in circular succession, a chamber into which said inlets open, a rotary distributor having a duct rotating in said chamber and ending with a discharge orifice movable successively in front of each of said inlets in successive register therewith, and means for supplying a continuous flow of gas under pressure to said rotary distributor whereby said pulse tubes are intermittently fed with said gas as said discharge orifice moves past said inlets, the improvement comprising an arcuately extending leading edge fast with said duct and projecting ahead of said discharge orifice with respect to the rotational direction thereof to cause successively each of said inlets to convert from a first condition wherein the respective inlet freely communicates with said chamber into a second condition wherein said respective inlet is momentarily shut off therefrom by said leading edge in anticipation of a third condition wherein said respective inlet is in registry with said discharge orifice, and an opposite arcuately extending trailing edge fast with said duct and projecting beyond said discharge orifice with respect to the rotational direction thereof to cause successively each of said inlets, in subsequence to said third condition of registry therewith of said discharge orifice, to convert into a fourth condition wherein the respective inlet is momentarily shut off from said chamber by said trailing edge, in anticipation of a fifth condition wherein said respective inlet again freely communicates with said chamber.
Claim 3
Dependent Claim
53 words
System as claimed in claim 1, wherein the arcuate extent of said trailing edge is greater than the arcuate extent of said leading edge, whereby each inlet is obturated longer in subsequence to than in anticipation of the registry therewith of said discharge orifice as the latter moves with a uniform rotational velocity.
Claim 4
Dependent Claim
41 words
System as claimed in claim 1, wherein said inlets have substantially the same arcuate extent as measured in the rotational direction of said discharge orifice, and the arcuate extent of said leading edge is substantially equal to that of said inlets.
Claim 5
Dependent Claim
42 words
System as claimed in claim 1, wherein said inlets have substantially the same arcuate extent as measured in the rotational direction of said discharge orifice, and the arcuate extent of said discharge orifice likewise measured is greater than that of said inlets.
Claim 6
Dependent Claim
26 words
System as claimed in claim 1, wherein said arcuately extending leading and trailing edges are formed by opposite thickened end parts of said rotary distributor duct.
Claim 7
Dependent Claim
108 words
System as claimed in claim 1, wherein said inlets open in circular succession on a revolution surface of said chamber, said rotary distributor duct extends generally diametrically across said chamber and ends with diametrically opposite discharge orifices both provided with arcuately extending leading and trailing edges, the leading edge of one discharge orifice being arcuately spaced from the trailing edge of the other discharge orifice and the trailing edge of said one discharge orifice being likewise arcuately spaced from the leading edge of said other discharge orifice, and said gas supply means comprises a journalled pipe extending axially into said chamber and fast with said diametrically extending duct.
Claim 8
Dependent Claim
45 words
System as claimed in claim 6, wherein said pulse tubes radiate from said revolution surface and have respective inlet axes which are eccentered with respect to the axis of said revolution surface, said inlet axes being inclined in the direction of rotation of said duct.
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) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |