US3895650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shutter-type fluid distributor
Assignee: Automobiles Citroen SA
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Filing: 1974-03-12
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Granted: 1975-07-22
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Expires: 1994-03-12
Abstract
Abstract Shutter-type fluid distributor comprises a three-way housing wherein the duct constituting the three ways are spaced angularly from each other and of which two are adapted to be selectively closed by rotation of the shutter in one of two angularly spaced positions thereof. The shutter comprises a pair of substantially parallel flap-valves operatively interconnected, the shutter and housing comprising means such that in one of the duct-closing positions the shutter is adapted to close simultaneously the relevant duct and the third duct of the housing. This shutter is particularly suited for controlling the distribution of fluid in the air-conditioning systems of automotive vehicles and the like.
Inventors
- 👤 Jean Cadiou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:16
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/00642; B60H1/00664; B60H1/00671; B60H1/00678; F; F16; F16K; F16K11/00; F16K11/10; F16K11/14; F16K11/16; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86847; Y10T137/877; Y10T137/87788; Y10T137/87812
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
96 words
A fluid distributor comprising: a housing having therein three ducts angularly spaced from each other; a shutter comprising two substantially parallel flap-valves pivotally mounted about a common axis in said housing; said two flap-valves being selectively movable from a first position blocking a first of said ducts to a second position blocking a second of said ducts; and means operatively connected with said shutter for causing said two flap-valves, when in one of said first and second positions, to block the respective one of said first and second ducts and to simultaneously block said third duct.
Claim 2
Dependent Claim
96 words
A fluid distributor comprising: a housing having therein three ducts angularly spaced from each other; a shutter comprising two substantially parallel flap-valves pivotally mounted about a common axis in said housing; said two flap-valves being selectively movable from a first position blocking a first of said ducts to a second position blocking a second of said ducts; and means operatively connected with said shutter for causing said two flap-valves, when in one of said first and second positions, to block the respective one of said first and second ducts and to simultaneously block said third duct.
Claim 3
Dependent Claim
127 words
Fluid distributor according to claim 1, wherein said two flap-valves of said shutter are operatively interconnected at their ends by means of a pair of pivot pins, a first pivot pin being free and rigid with a first flap-valve to act as a hinge member to a second flap-valve, the second pivot pin being fixed and acting as a common hinge pin to both flap-valves; and said means comprises a bearing member rigid with said first flap-valve being adapted to engage a cam face formed on a cam member rigid with said housing for closing the third duct and varying the angular position of one flap-valve in relation to the other, resilient means constantly maintaining said flap-valves substantially parallel to each other in all the other positions.
Claim 4
Dependent Claim
46 words
Fluid distributor according to claim 2, wherein one end of the second flap-valve of said shutter is rigid with a socket pivoted to said first pivot pin, the opposite end of said second fLap-valve being rigid with another socket pivoted to said second fixed pivot pin.
Claim 5
Dependent Claim
38 words
Fluid distributor according to claim 2, wherein said resilient means constantly maintaining said flap-valves substantially parallel to each other comprises a tension spring pre-stressed between the registering faces of said flap-valves in the vicinity of their pivoted ends.
Claim 6
Dependent Claim
60 words
Fluid distributor according to claim 2, wherein said resilient means constantly maintaining said flap-valves substantially parallel to each other comprises a torsion spring associated with the free pivot pin in such a way as to urge the first flap-valve rigid with said free pivot pin to a position in which said first flap-valve is substantially parallel to said second flap-valve.
Claim 7
Dependent Claim
51 words
Fluid distributor according to claim 2, wherein said cam member rigid with said housing comprises a projecting lip disposed at the inlet end of the duct which is to be closed simultaneously with the third duct of the housing, said projecting lip being curved towards the outlet of said third duct.
Claim 8
Dependent Claim
25 words
Fluid distributor according to claim 2, wherein said bearing member comprises a roller follower adapted to engage said cam face formed on said cam member.
Claim 9
Dependent Claim
19 words
Fluid distributor according to claim 2, wherein said bearing member comprises a friction shoe movable along said cam face.
Claim 10
Dependent Claim
41 words
Fluid distributor according to claim 2, wherein an aperture is formed in said second flap-valve of said shutter to permit the free movements of said bearing member during the closing of said third duct by the first flap of said shutter.
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) | 1978-07-21 | 1979-01-20 | 1979-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-21 | 1983-01-20 | 1983-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-21 | 1987-01-20 | 1987-07-22 | $7700.00 | Window Closed / Lapsed |