US4082673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter asembly with integral service shut-off valve
Assignee: Specialty Materials Inc
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Filing: 1975-05-30
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Granted: 1978-04-04
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Expires: 1995-05-30
Abstract
Abstract The filter assembly employs a closure portion having fluid inlet and outlet ports integral therewith enabling in-line use of the assembly. Associated with such closure is a spring biased valve handle, whereby rotation of the handle along a prescribed course of travel enables simultaneous closing of the inlet and outlet ports thusly permitting free movement of the filter assembly body from the closure. A vent is provided in the closure which acts to relieve internal pressure within the assembly thereby further enabling easy removal of the filter body.
Inventors
- 👤 Guido D. Cilento
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:17
CPC Classifications
B; B01; B01D; B01D36/00; B01D36/001; B01D29/00; B01D29/11; B01D29/114; B01D29/96; B01D35/00; B01D35/14; B01D35/153; B01D2201/00; B01D2201/30; B01D2201/301; B01D2201/302
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
111 words
A filter assembly for use in in-line fluid flow applications including: a filter body having a closure portion associated therewith; fluid inlet means; fluid outlet means; each of said means being integral of said closure portion; handle means affixed to and communicating with said closure portion, said handle means being movable in concert with valve means disposed between said inlet and outlet means, said valve means being positioned in cooperative working relation with respect to said closure to thereby control the flow of fluid into said body member by rotation of said handle means; and vent means integrally formed of said closure portion for releasing internal pressure entrapped in said assembly.
Claim 2
Dependent Claim
111 words
A filter assembly for use in in-line fluid flow applications including: a filter body having a closure portion associated therewith; fluid inlet means; fluid outlet means; each of said means being integral of said closure portion; handle means affixed to and communicating with said closure portion, said handle means being movable in concert with valve means disposed between said inlet and outlet means, said valve means being positioned in cooperative working relation with respect to said closure to thereby control the flow of fluid into said body member by rotation of said handle means; and vent means integrally formed of said closure portion for releasing internal pressure entrapped in said assembly.
Claim 3
Dependent Claim
40 words
A filter assembly as claimed in claim 1, including: valve means being alternately rotatable with respect to said closure for 60 arcuate degrees by movement of said handle means to thereby respectively open and close said chamber to fluid flow.
Claim 4
Dependent Claim
84 words
A filter assembly as claimed in claim 1, including: first and second positions for valve means placement with respect to said inlet and outlet means, said valve means being positionable by movement of said handle means for a prescribed amount of arcuate travel, spring means positioned at the lower portion of said handle means providing an upwardly biasing force to said handle with respect to said closure portion; slotted means depending from said handle for engagement with abutment means affixed to said closure portion.
Claim 5
Dependent Claim
86 words
A filter assembly as claimed in claim 3, including: valve engagement means formed in said closure permitting said valve means to be rotated in concert with said handle means by engagement of said slotted means with said abutment means, as said handle means is urged downwardly against said closure portion, shaft means connected to said handle at one end and having a shutter means at the opposite end thereof, said shutter means opening and closing said vent means in accordance with movement of said handle means.
Claim 6
Dependent Claim
40 words
A filter assembly as claimed in claim 3, wherein: said handle means being downwardly positionable against a bias means for subsequent rotation of said valve means into the closed position by the engagement of said handle means with said abutment.
Claim 7
Dependent Claim
47 words
A filter assembly as claimed in claim 3, wherein: rotation of said handle means from engagement between said abutment and said slotted means causes said handle means to float upwardly under the biasing action of said spring and thereby places said assembly into a fluid flow position.
Claim 8
Dependent Claim
33 words
A filter assembly as claimed in claim 1, including: vent means actuated responsive to the placement of said valve means into the off position to thereby purge said chamber interior of entrapped fluid.
Claim 9
Dependent Claim
80 words
A filter assembly as claimed in claim 1, including: handle means in a normally non-rotatable position caused to assume a working position by being urged downwardly against a spring, said handle being rotatable along a predefined path for a prescribed distance and moves upwardly to cause said fluid inlet and outlet ports to be closed off to fluid flow, and simultaneously therewith, said vent means being activated, allowing entrapped fluid to vent through exit means integral with said closure means.
Claim 10
Dependent Claim
64 words
A filter cartridge assembly as claimed in claim 4, including: internal fluid pressure balance means having a pressure equalization seal means disposed about a portion of said shaft means in cooperative working relationship with fluid passage means disposed below said pressure equalization seal for overcoming fluid pressures across sealing means between said shaft means, said closure portion and said fluid inlet and outlet means.
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) | 1981-04-03 | 1981-10-03 | 1982-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-03 | 1985-10-03 | 1986-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-03 | 1989-10-03 | 1990-04-04 | $7700.00 | Window Closed / Lapsed |