Patent US3716071A successfully refreshed from Google Patents.
US3716071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluidic logic device
Assignee: Robert Bosch GmbH
•
Filing: 1971-10-07
•
Granted: 1973-02-13
•
Expires: 1991-10-07
Abstract
Abstract A pneumatically or hydraulically operated fluidic logic device wherein a housing defines a ring-shaped chamber which communicates with fluid-supplying and fluid-discharging first and second passages as well as with a third passage for admission of a control fluid stream at a variable pressure. An elastically deformable split ring is received in the chamber with freedom of radial movement to seal the first and second passages from each other in response to a rise of fluid pressure in the third passage. The third passage has one or more channels machined into the surface which surrounds or is surrounded by the chamber, and each of the first and second passages has one or more channels machined into the surface which is surrounded by or surrounds the chamber. The split ring can be expanded to seal the first and second passages from each other if the channels of these passages are provided in the surface which surrounds the chamber, and the split ring is caused to contract and to thereby seal the first and second passages from each other if the channels of the first and second passages are provided in the surface which is surrounded by the chamber.
Inventors
- 👤 W Passera
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:33
CPC Classifications
F; F15; F15C; F15C3/00; F15C3/005; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87153
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
99 words
A hydraulically or pneumatically operated fluidic logic device, comprising a housing having at least one ring-shaped chamber and a plurality of passages communicating with said chamber, said passages including a fluid-supplying first passage, a fluid-discharging second passage and a third passage for admission of a control fluid at a variable pressure; and a slotted elastically deformable annular valve member received in said chamber with freedom of radial movement and being movable in response to pressure changes in said third passage into and from a sealing position in which said member separates said first and second passages from each other.
Claim 2
Dependent Claim
99 words
A hydraulically or pneumatically operated fluidic logic device, comprising a housing having at least one ring-shaped chamber and a plurality of passages communicating with said chamber, said passages including a fluid-supplying first passage, a fluid-discharging second passage and a third passage for admission of a control fluid at a variable pressure; and a slotted elastically deformable annular valve member received in said chamber with freedom of radial movement and being movable in response to pressure changes in said third passage into and from a sealing position in which said member separates said first and second passages from each other.
Claim 3
Dependent Claim
99 words
A hydraulically or pneumatically operated fluidic logic device, comprising a housing having at least one ring-shaped chamber and a plurality of passages communicating with said chamber, said passages including a fluid-supplying first passage, a fluid-discharging second passage and a third passage for admission of a control fluid at a variable pressure; and a slotted elastically deformable annular valve member received in said chamber with freedom of radial movement and being movable in response to pressure changes in said third passage into and from a sealing position in which said member separates said first and second passages from each other.
Claim 4
Dependent Claim
99 words
A hydraulically or pneumatically operated fluidic logic device, comprising a housing having at least one ring-shaped chamber and a plurality of passages communicating with said chamber, said passages including a fluid-supplying first passage, a fluid-discharging second passage and a third passage for admission of a control fluid at a variable pressure; and a slotted elastically deformable annular valve member received in said chamber with freedom of radial movement and being movable in response to pressure changes in said third passage into and from a sealing position in which said member separates said first and second passages from each other.
Claim 5
Dependent Claim
97 words
A device as defined in claim 1, wherein said housing has first seat means surrounding said chamber and second seat means surrounded by said chamber, said third passage communicating with said chamber in the region of one of said seat means and said first and second passages communicating with said chamber in the region of the other of said seat means, said valve member being deformable in response to the pressure of control fluid in said third passage to sealingly engage said other seat means and to thus separate said first and second passages from each other.
Claim 6
Dependent Claim
37 words
A device as defined in claim 2, wherein said other seat means surrounds said chamber and said valve member is received in said chamber in prestressed condition so that it normally bears against said other seat means.
Claim 7
Dependent Claim
39 words
A device as defined in claim 2, wherein said other seat means is surrounded by said chamber and said valve member is received in said chamber in prestressed condition so that it normally bears against said other seat means.
Claim 8
Dependent Claim
35 words
A device as defined in claim 1, wherein the width of said chamber, as considered in the radial direction thereof, is between one and one-half and three times the wall thickness of said valve member.
Claim 9
Dependent Claim
28 words
A device as defined in claim 1, wherein said valve member is received in said chamber with minimal clearance, as considered in the axial direction of said chamber.
Claim 10
Dependent Claim
59 words
A device as defined in claim 1, wherein said housing has a first substantially cylindrical surface surrounding said chamber and a second substantially cylindrical surface surrounded by said chamber, said first and second passages comprising arcuate channel means provided in one of said surfaces and said third passage comprising arcuate channel means provided in the other of said surfaces.
Claim 11
Dependent Claim
47 words
A device as defined in claim 7, wherein said channel means are of finite length and said housing comprises rib means extending between said channel means of said first and second passages, said rib means constituting seat means for said valve member in said sealing position thereof.
Claim 12
Dependent Claim
29 words
A device as defined in claim 7, wherein said channel means of said first passage includes a plurality of channels which flank the channel means of said second passage.
Claim 13
Dependent Claim
14 words
A device as defined in claim 9, wherein said one surface surrounds said chamber.
Claim 14
Dependent Claim
16 words
A device as defined in claim 9, wherein said one surface is surrounded by said chamber.
Claim 15
Dependent Claim
66 words
A device as defined in claim 1, wherein said housing defines a second ring-shaped chamber, one of said chambers surrounding the other of said chambers and said housing comprising a ring-shaped portion disposed between said chambers, said third passage being provided in said ring-shaped portion and communicating with both said chambers and further comprising a second elastically deformable slotted annular valve member in said second chamber.
Claim 16
Dependent Claim
24 words
A device as defined in claim 1, further comprising means provided in said housing for holding said valve member against rotation in said chamber.
Claim 17
Dependent Claim
27 words
A device as defined in claim 13, wherein said means for holding comprises an insert fixedly received in said chamber in the slot of said valve member.
Claim 18
Dependent Claim
40 words
A device as defined in claim 14, wherein said valve member has a pair of end surfaces flanking said slot and said insert has a pair of complementary surfaces each closely adjacent to a different one of said end surfaces.
Claim 19
Dependent Claim
21 words
A device as defined in claim 15, wherein said complementary surfaces are at least substantially parallel to the respective end surfaces.
Claim 20
Dependent Claim
14 words
A device as defined in claim 14, wherein said complementary surfaces are concave surfaces.
Claim 21
Dependent Claim
89 words
A device as defined in claim 1, wherein said housing has a first substantially cylindrical surface surrounding said chamber and a second substantially cylindrical surface surrounded by said chamber, said first and second passages respectively having first and second channel means provided in one of said surfaces and said third passage comprising channel means provided in the other of said surfaces, at least one of said channel means having a plurality of arcuate channels and the respective passage further comprising means connecting said plurality of channels with each other.
Claim 22
Dependent Claim
27 words
A device as defined in claim 1, further comprising valve means actuatable to respectively connect and seal said third passage from a source of pressurized control fluid.
References Cited (Backward Citations)
US3057594A
Cited
US3176714A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |