Patent US4369812A successfully refreshed from Google Patents.
US4369812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control of fluid flow using precisely positioned disc
Assignee: Nypro Inc
•
Filing: 1981-02-18
•
Granted: 1983-01-25
•
Expires: 2001-02-18
Abstract
Abstract Method and apparatus for the control of fluid flow using a flexible disc that is positioned in a control channel and restricted to movement along the longitudinal axis of the channel. Closure control is exercised by moving the disc into closer contact with a ring seat that is essentially self-purging of debris. Since the disc is confined to essentially longitudinal movement, distortion due to random lateral movement is avoided.
Inventors
- 👤 Joseph R. Paradis
- 👤 Edward W. Kaleskas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:43
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/14; F16K15/141; B; B29; B29C; B29C65/00; B29C65/02; B29C65/08; B29C66/00; B29C66/01; B29C66/05; B29C66/302; B29C66/3022; B29C66/30223; B29C66/50; B29C66/51; B29C66/54; B29C66/541; B29C66/5412; B29L; B29L2031/00; B29L2031/748; B29L2031/7506; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7879
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
140 words
A flow control device comprising a housing; a flow channel in said housing extending to a control channel which is coaxial therewith; a valve seat in said control channel surrounding a further flow channel extending from said control channel; and a flexible disc positioned on said valve seat of said control channel, said control channel having an inside wall surface extending from said valve seat and interrupted by a plurality of peripheral relief channels; and means for prebiasing said flexible disc comprising a set of prongs for engaging the central portion of said disc within the opening of said valve seat and being separated by passageways which extend to said flow channel; the diameter of the interrupted inside wall surface being less than the diameter of said disc; thereby to assure precise positioning of said disc on said valve seat.
Claim 2
Dependent Claim
140 words
A flow control device comprising a housing; a flow channel in said housing extending to a control channel which is coaxial therewith; a valve seat in said control channel surrounding a further flow channel extending from said control channel; and a flexible disc positioned on said valve seat of said control channel, said control channel having an inside wall surface extending from said valve seat and interrupted by a plurality of peripheral relief channels; and means for prebiasing said flexible disc comprising a set of prongs for engaging the central portion of said disc within the opening of said valve seat and being separated by passageways which extend to said flow channel; the diameter of the interrupted inside wall surface being less than the diameter of said disc; thereby to assure precise positioning of said disc on said valve seat.
Claim 3
Dependent Claim
25 words
A control device as defined in claim 1 wherein said relief channels commence at the edge position of said disk when positioned in said housing.
Claim 4
Dependent Claim
21 words
A control device as defined in claim 1 wherein said wall surface is terminated at an outer extremity by rounded shoulders.
Claim 5
Dependent Claim
31 words
A control device as defined in claim 1 wherein said relief channels have side walls which are in alignment with radii that extend outwardly from the central axis of said device.
Claim 6
Dependent Claim
33 words
A control device as defined in claim 1 wherein each relief channel has a rear wall which is coincident with a cylindrical surface that is concentric with the central axis of said device.
Claim 7
Dependent Claim
27 words
A control device as defined in claim 1 wherein each prong includes a buttress that slopes away from a peak of the prong towards the base thereof.
Claim 8
Dependent Claim
26 words
A control device as defined in claim 6 wherein the buttress has an angle of approximately 15° with respect to the central axis of said device.
Claim 9
Dependent Claim
25 words
A control device as defined in claim 1 wherein said prong includes a portion that slopes away from the peak thereof towards said control channel.
Claim 10
Dependent Claim
36 words
A control device as defined in claim 1 wherein said housing is in two mating parts, one of which includes a ridge at the mating surfaces of said parts of promote the sealing of said device.
Claim 11
Dependent Claim
23 words
A control device as defined in claim 9 wherein said device is sealed by ultrasonic bonding and said ridge has a triangular cross-section.
Claim 12
Dependent Claim
47 words
A control device as defined in claim 1 wherein one of the flow channels contains a base that extends to an outlet with a curved shoulder between said outlet and said base to limit the distortion and distension of said disk during the operation of said valve.
Claim 13
Dependent Claim
33 words
A control device as defined in claim 1 wherein said prongs are circumferentially disposed about an opening that is coaxial with said flow channel and has a greater diameter than said flow channel.
References Cited (Backward Citations)
US2223944A
Cited
US3807445A
Cited
US3889710A
Cited
US3954121A
Cited
US4037784A
Cited
US4141379A
Cited
US4142677A
Cited
US4222407A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-01-24 | 1986-07-26 | 1987-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-24 | 1990-07-26 | 1991-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-24 | 1994-07-26 | 1995-01-25 | $7700.00 | Window Closed / Lapsed |