Patent US4007765A successfully refreshed from Google Patents.
US4007765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shut off and venting system for a conduit transfer line
Assignee: Individual
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Filing: 1975-11-07
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Granted: 1977-02-15
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Expires: 1995-11-07
Abstract
Abstract A transport tank and a spreader tank with a communicating conduit system for the transfer of liquid sludge to the latter tank. A conduit shut off and venting system includes a receptacle into which a first conduit discharges with a remaining flexible conduit segment leading to the spreader tank. The receptacle mounts an air cylinder provided with a piston actuated valve assembly operable to close a receptacle intake port and open a receptacle vent for venting and evacuation of the flexible conduit segment. When oppositely positioned the valve assembly closes the vent for normal fluid transfer. A valve in circuit with a fluid level sensing device controls air cylinder operation.
Inventors
- 👤 Paul M. Bellows
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:56
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/06; B67D7/36; B60; B60P; B60P3/00; B60P3/22; B60P3/224; B60P3/2255; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3109; Y10T137/8593; Y10T137/86187; Y10T137/86196
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
152 words
A shut off and venting system simultaneously stopping fluid flow in one conduit segment and venting a remaining communicating conduit segment of a conduit system extending between two tanks, said shut off and venting system comprising, a fluid receptacle in communication with both conduit segments, said receptacle having a vent and fluid intake and discharge openings, a valve assembly simultaneously closing said vent and opening said intake opening in one position whereby fluid is communicated from one conduit segment to the remaining conduit segment and in a second position closing the intake opening of the receptacle and opening the vent thereby venting said remaining conduit segment, switch means actuated upon the level of a tank being filled by the conduit system reaching a desired height, and valve means in circuit with said switch means and operable to control a pressure responsive motor actuating said valve assembly whereby said assembly is positioned automatically.
Claim 2
Dependent Claim
152 words
A shut off and venting system simultaneously stopping fluid flow in one conduit segment and venting a remaining communicating conduit segment of a conduit system extending between two tanks, said shut off and venting system comprising, a fluid receptacle in communication with both conduit segments, said receptacle having a vent and fluid intake and discharge openings, a valve assembly simultaneously closing said vent and opening said intake opening in one position whereby fluid is communicated from one conduit segment to the remaining conduit segment and in a second position closing the intake opening of the receptacle and opening the vent thereby venting said remaining conduit segment, switch means actuated upon the level of a tank being filled by the conduit system reaching a desired height, and valve means in circuit with said switch means and operable to control a pressure responsive motor actuating said valve assembly whereby said assembly is positioned automatically.
Claim 3
Dependent Claim
19 words
The system claimed in claim 1 wherein said intake opening and said vent are oppositely disposed on said receptacle.
Claim 4
Dependent Claim
25 words
The system claimed in claim 2 wherein said receptacle serves to mount said pressure responsive motor in axial alignment with said vent and intake opening.
Claim 5
Dependent Claim
19 words
The system claimed in claim 3 additionally including vent structure interposed between said receptacle and the pressure responsive motor.
Claim 6
Dependent Claim
30 words
The system as claimed in claim 1 wherein said valve assembly includes upper and lower resilient members for closure of said vent and said intake opening in an alternate manner.
Claim 7
Dependent Claim
32 words
The system as claimed in claim 5 wherein said receptacle includes a ring member defining said vent and also constituting a valve seat for said upper resilient member of the valve assembly.
Claim 8
Dependent Claim
20 words
The system as claimed in claim 1 wherein said receptacle is located at the highest point along the conduit system.
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) | 1980-02-15 | 1980-08-16 | 1981-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-15 | 1984-08-16 | 1985-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-15 | 1988-08-16 | 1989-02-15 | $7700.00 | Window Closed / Lapsed |