US3789862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable valve construction and method of making seals
Assignee: Nibco Inc
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Filing: 1972-11-06
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Granted: 1974-02-05
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Expires: 1992-11-06
Abstract
Abstract A method of making seals in which the valve member is made from a flexible material, such as plastic. A valve housing member is provided with a longitudinal bore which communicates with a fluid to be dispensed. The housing member is provided with a countersunk portion to receive therein a hollow valve member. The latter is provided with a lower cylindrical portion, the bottom surface of which functions as a valve seat for a centrally disposed stem member. The outer surface of the lower cylindrical portion provides an interference fit for the bore of the housing member. The hollow valve body member is threaded into the countersunk housing until an interference seal is initially established with the bore of the housing member. The valve body member is threaded further causing flexing of the valve body to occur as an integral annular skirt portion of the valve body engages the shoulder at the bottom of the countersunk which serves as a valve seat therefor. Continued threading of the valve body establishes a controlled tension on the valve housing member by an interference in length between the valve member and the housing member between the valve seat and a bottoming out position. While the countersunk portion is threaded to receive the valve body member, the bottom of the countersink is unthreaded and is positioned to support the annular skirt portion of the valve body and prevents radial movement thereof which would cause leaking under heavy pressures.
Inventors
- 👤 R Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:22
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/10; F16K11/20; F16K19/00; F16K19/006; F16K27/00; F16K27/02; F16K27/0263; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0402; Y10T137/0491; Y10T137/7504; Y10T137/7613; Y10T137/8593; Y10T137/87571; Y10T137/87676; Y10T137/87684
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
381 words
A method of effecting a valve seal which comprises the steps of a. providing a valve housing member from a flexible plastic material with said valve housing member having a bore therein which communicates with a source of liquid, 1. said bore being provided with a countersunk portion the bottom of which provides a shoulder which constitutes a first valve seat, 2. said countersunk portion having at least a portion thereof threaded, 3. providing first abutment-engaging means a predetermined distance above the bottom of said countersunk portion, b. inserting a hollow valve body member made from a flexible plastic material into said housing member by threading it into the bore thereof, 1. said hollow valve body member having a lower cylindrical portion the bottom surface of which provides a valve seat, 2. said lower cylindrical portion having an external surface which provides a first valve sealing surface, 3. making said external surface of a sufficiently large diameter to provide an interference fit with said bore of said valve housing member, 4. said hollow valve body member having a flanged annular skirt portion integral therewith the lowermost surface of which constitutes a second valve sealing surface, 5. providing an abutment member on said hollow valve body member a predetermined distance above the lowermost surface of said flanged annular skirt portion, c. threadedly securing a stem member within said hollow valve body member, 1. said hollow valve body member having a lower cylindrical portion the bottom surface of which provides a second valve seat, d. inserting the lower cylindrical surface of said hollow valve body member into the bore of said housing member and thereby establishing an interference seal, e. continuing to insert the lower cylindrical surface of said hollow valve body member into the bore of said valve housing member to effect a second seal between the lowermost surface of said flanged annular skirt portion and said shoulder provided by said countersunk portion, f. and flexing said flanged annular skirt portion by continuing the insertion of said lower cylindrical surface of said hollow valve body member into the bore of said housing member until said abutment member on said hollow valve body member is finally stopped by said first abutment engaging means thereby establishing a controlled tensioning of said valve housing member.
Claim 2
Independent Claim
381 words
A method of effecting a valve seal which comprises the steps of a. providing a valve housing member from a flexible plastic material with said valve housing member having a bore therein which communicates with a source of liquid, 1. said bore being provided with a countersunk portion the bottom of which provides a shoulder which constitutes a first valve seat, 2. said countersunk portion having at least a portion thereof threaded, 3. providing first abutment-engaging means a predetermined distance above the bottom of said countersunk portion, b. inserting a hollow valve body member made from a flexible plastic material into said housing member by threading it into the bore thereof, 1. said hollow valve body member having a lower cylindrical portion the bottom surface of which provides a valve seat, 2. said lower cylindrical portion having an external surface which provides a first valve sealing surface, 3. making said external surface of a sufficiently large diameter to provide an interference fit with said bore of said valve housing member, 4. said hollow valve body member having a flanged annular skirt portion integral therewith the lowermost surface of which constitutes a second valve sealing surface, 5. providing an abutment member on said hollow valve body member a predetermined distance above the lowermost surface of said flanged annular skirt portion, c. threadedly securing a stem member within said hollow valve body member, 1. said hollow valve body member having a lower cylindrical portion the bottom surface of which provides a second valve seat, d. inserting the lower cylindrical surface of said hollow valve body member into the bore of said housing member and thereby establishing an interference seal, e. continuing to insert the lower cylindrical surface of said hollow valve body member into the bore of said valve housing member to effect a second seal between the lowermost surface of said flanged annular skirt portion and said shoulder provided by said countersunk portion, f. and flexing said flanged annular skirt portion by continuing the insertion of said lower cylindrical surface of said hollow valve body member into the bore of said housing member until said abutment member on said hollow valve body member is finally stopped by said first abutment engaging means thereby establishing a controlled tensioning of said valve housing member.
Claim 3
Dependent Claim
10 words
said countersunk portion having at least a portion thereof threaded,
Claim 4
Dependent Claim
10 words
said countersunk portion having at least a portion thereof threaded,
Claim 5
Dependent Claim
33 words
A method of effecting a valve seal as defined iN claim 1 including the additional step of supporting said flanged annular skirt of said hollow valve body member to prevent radial movement thereof.
Claim 6
Dependent Claim
15 words
said lower cylindrical portion having an external surface which provides a first valve sealing surface,
Claim 7
Dependent Claim
15 words
said lower cylindrical portion having an external surface which provides a first valve sealing surface,
Claim 8
Dependent Claim
38 words
providing first abutment-engaging means a predetermined distance above the bottom of said countersunk portion, b. inserting a hollow valve body member made from a flexible plastic material into said housing member by threading it into the bore thereof,
Claim 9
Dependent Claim
38 words
providing first abutment-engaging means a predetermined distance above the bottom of said countersunk portion, b. inserting a hollow valve body member made from a flexible plastic material into said housing member by threading it into the bore thereof,
Claim 10
Dependent Claim
22 words
making said external surface of a sufficiently large diameter to provide an interference fit with said bore of said valve housing member,
Claim 11
Dependent Claim
22 words
making said external surface of a sufficiently large diameter to provide an interference fit with said bore of said valve housing member,
Claim 12
Dependent Claim
73 words
A method of effecting a valve seal as defined in claim 2 wherein said step of supporting said flanged annular skirt of said hollow valve body member to prevent radial movement thereof is accomplished by effecting close dimensional tolerances between the diameter of said countersunk bore and said flanged annular skirt and leaving the bottom of said bore unthreaded for a length at least equal to the length of said flanged annular skirt.
Claim 13
Dependent Claim
68 words
A method of effecting a valve seal as defined in claim 1 including the additional step of forming said valve disk on said stem member from a substantially conical surface whereby said valve disk has a component of force toward said bore of said valve housing member when said disk is brought into engagement with said second valve seat thereby compensating for wear of said second valve seat.
Claim 14
Dependent Claim
24 words
said hollow valve body member having a flanged annular skirt portion integral therewith the lowermost surface of which constitutes a second valve sealing surface,
Claim 15
Dependent Claim
24 words
said hollow valve body member having a flanged annular skirt portion integral therewith the lowermost surface of which constitutes a second valve sealing surface,
Claim 16
Dependent Claim
35 words
providing an abutment member on said hollow valve body member a predetermined distance above the lowermost surface of said flanged annular skirt portion, c. threadedly securing a stem member within said hollow valve body member,
Claim 17
Dependent Claim
35 words
providing an abutment member on said hollow valve body member a predetermined distance above the lowermost surface of said flanged annular skirt portion, c. threadedly securing a stem member within said hollow valve body member,
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) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |