US3880326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaphragm structure for dispensing fluids
Assignee: ATK Launch Systems LLC
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Filing: 1966-08-16
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Granted: 1975-04-29
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Expires: 1986-08-16
Abstract
Abstract Disclosure relates to a construction for positively displacing fluid in a tank and comprises a cylindrical lining for the tank having one end attached to the tank wall, a corrugated section to resist radial buckling and a plain section having one end attached to the corrugated section and its opposite end connected to a piston and in which the plain section rolls inside out in the corrugated section to expell liquid from the tank.
Inventors
- 👤 Harry M Kennard
- 👤 James R Handzel
- 👤 Elmore M Peloubet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:51
CPC Classifications
F; F16; F16J; F16J3/00; F16J3/06; B; B64; B64G; B64G1/00; B64G1/22; B64G1/40; B64G1/402; B64G1/4021; B65; B65D; B65D88/00; B65D88/54; B65D88/58; B65D88/60; B65D88/62; F02; F02K; F02K9/00; F02K9/72
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
86 words
The combination with a liquid expulsion tank having a discharge outlet and a piston movable by a pressurizing medium from one inner end of the tank to the other to expel the liquid therefrom; of a cylindrical diaphragm and bellows hermetically sealed together at one end and respectively to the piston and to said tank at their other ends to isolate the pressurizing medium from the liquid, said diaphragm being rollable backwardly within itself and through said bellows by the piston upon liquid expelling movement thereof.
Claim 2
Dependent Claim
86 words
The combination with a liquid expulsion tank having a discharge outlet and a piston movable by a pressurizing medium from one inner end of the tank to the other to expel the liquid therefrom; of a cylindrical diaphragm and bellows hermetically sealed together at one end and respectively to the piston and to said tank at their other ends to isolate the pressurizing medium from the liquid, said diaphragm being rollable backwardly within itself and through said bellows by the piston upon liquid expelling movement thereof.
Claim 3
Dependent Claim
19 words
The combination recited in claim 1 wherein the piston is formed integrally with said other end of said diaphragm.
Claim 4
Dependent Claim
29 words
The combination recited in claim 1 wherein said bellows is sealed to the tank only about the discharge outlet to isolate the liquid from the walls of the tank.
Claim 5
Dependent Claim
50 words
The combination recited in claim 1 wherein a tank liner is sealed to the tank and to said other end of said bellows and extends to and is sealed to a spaced point of the tank about the discharge outlet to isolate the liquid from the walls of the tank.
Claim 6
Dependent Claim
23 words
The combination recited in claim 1 wherein said bellows is in extended position at the start of the expulsion movement of the piston.
Claim 7
Dependent Claim
23 words
The combination recited in claim 1 wherein said bellows is in collapsed position at the start of the expulsion movement of the piston.
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) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |