US4525910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resilient tipped needle valve
Assignee: Vernay Laboratories Inc
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Filing: 1983-08-08
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Granted: 1985-07-02
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Expires: 2003-08-08
Abstract
Abstract A needle valve is formed by molding a resilient tip to a rigid body having a tip receiving cylindrical portion or barrel which includes tip retaining means for securing the resilient tip thereto. The tip is then ground until the outer edge of the barrel is engaged to form a resilient single angle or simple conical tip to thereby eliminate distortions which may be present in the molded tip. The tip retaining means comprises either a socket formed into the distal end of the barrel or a mushroom-shaped bayonet projection extending therefrom.
Inventors
- 👤 Dennis A. Boehmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:27
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/32; F16K1/34; F16K1/36; F16K1/38; B; B29; B29C; B29C37/00; B29C37/0078; B29C37/0082; B29C69/00; B29C69/001; B29C70/00; B29C70/68; B29C70/74; B29C70/76; B29L; B29L2031/00; B29L2031/748; B29L2031/7506; B29L2031/772; B29L2031/7724; Y; Y10; Y10S; Y10S251/00; Y10S251/903; Y10T; Y10T29/00; Y10T29/49; Y10T29/49405; Y10T29/49412; Y10T29/49416; Y10T29/49417; Y10T29/49419
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
143 words
A method of making a needle valve having a rigid body and a resilient conical tip, said method comprising the steps of: providing a rigid body having a tip receiving cylindrical part extending axially from one end thereof, said cylindrical part including tip retaining means; molding a resilient, substantially conical tip onto said cylindrical part, said tip engaging said tip retaining means to secure said tip to said cylindrical extension; and grinding said tip until the outer edge of said cylindrical part of said rigid body is engaged to remove a portion thereof to form a single angle conical tip having a base dimension substantially equal to the diameter of the removed portion of said cylindrical part whereby any molding distortions of said tip are eliminated to assure a sealing diameter substantially equal to the base dimension of said single angle conical tip.
Claim 2
Independent Claim
143 words
A method of making a needle valve having a rigid body and a resilient conical tip, said method comprising the steps of: providing a rigid body having a tip receiving cylindrical part extending axially from one end thereof, said cylindrical part including tip retaining means; molding a resilient, substantially conical tip onto said cylindrical part, said tip engaging said tip retaining means to secure said tip to said cylindrical extension; and grinding said tip until the outer edge of said cylindrical part of said rigid body is engaged to remove a portion thereof to form a single angle conical tip having a base dimension substantially equal to the diameter of the removed portion of said cylindrical part whereby any molding distortions of said tip are eliminated to assure a sealing diameter substantially equal to the base dimension of said single angle conical tip.
Claim 3
Dependent Claim
20 words
A method as claimed in claim 1 further comprising the step of bonding said tip to said tip retaining means.
Claim 4
Independent Claim
129 words
A method of making a needle valve having a rigid body and a resilient conical tip, said method comprising the steps of: providing a rigid body terminating at one edge in a tip receiving cylindrical part having tip retaining means for securing a resilient tip thereto; engaging a mold to said rigid body to swage the distal end thereof from an angled peripheral edge; molding a resilient tip to said cylindrical part of said rigid body, the surface of said resilient tip extending beyond the desired surface of said resilient conical tip; and grinding said resilient tip until said peripheral edge of said rigid body is engaged to remove a portion thereof to form said resilient conical tip whereby any molding distortions of said molded resilient tips are eliminated.
Claim 5
Independent Claim
129 words
A method of making a needle valve having a rigid body and a resilient conical tip, said method comprising the steps of: providing a rigid body terminating at one edge in a tip receiving cylindrical part having tip retaining means for securing a resilient tip thereto; engaging a mold to said rigid body to swage the distal end thereof from an angled peripheral edge; molding a resilient tip to said cylindrical part of said rigid body, the surface of said resilient tip extending beyond the desired surface of said resilient conical tip; and grinding said resilient tip until said peripheral edge of said rigid body is engaged to remove a portion thereof to form said resilient conical tip whereby any molding distortions of said molded resilient tips are eliminated.
Claim 6
Dependent Claim
27 words
A method as claimed in claim 3 wherein said grinding step is performed until said resilient tip and said peripheral edge are in alignment with one another.
Claim 7
Dependent Claim
20 words
A method as claimed in claim 4 further comprising the step of bonding said tip to said tip securing means.
References Cited (Backward Citations)
US25560A
Cited
US2414577A
Cited
US3090596A
Cited
US3086750A
Cited
US3155367A
Cited
US3326521A
Cited
US3445089A
Cited
US3581365A
Cited
US3440313A
Cited
US4196886A
Cited
US4336920A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-01 | 1988-12-31 | 1989-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-01 | 1992-12-31 | 1993-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-01 | 1996-12-31 | 1997-07-02 | $7700.00 | Window Closed / Lapsed |