US3880323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-pressurized container for liquids
Assignee: HARDWARE SALES Inc A CORP OF
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Filing: 1974-04-26
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Granted: 1975-04-29
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Expires: 1994-04-26
Abstract
Abstract A self-pressurized container for liquids includes a rigid concave base plate. The plate has a peripheral skirt. A circular elastic membrane with grooved peripheral wall is secured to the skirt of the base plate by a band held by an adjustable screw clamp. The membrane is tapered radially in thickness to expand to uniform thickness under pressure of liquid in the container. The plate has three legs to rest stably on irregular surfaces. Two cords engaged on a handle pass through a cord centering and holding member and are secured by clips to four spaced points on the skirt. A tape extends from the handle through a slot in the cord centering member to prevent the member and cords from twisting. The tape carries a scale calibrated to indicate the volume of liquids in the container. A flexible hose for filling and emptying the container is connected to a fitting at the center of the base plate. The fitting can be rotatable. The hose has a nozzle with special friction gripping means to engage a faucet for filling the container.
Inventors
- 👤 John S Viehe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:55
CPC Classifications
F; F16; F16J; F16J12/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
225 words
A self-pressurized container for liquid, comprising: a circular base plate having an axially extending, depending, cylindrical skirt with radially extending peripheral rim: a circular elastic membrane having an axially extending, depending, cylindrical wall surrounding said skirt, said membrane having an inner circumferential recess receiving and engaging the rim of the base plate so that the membrane overlays the plate and defines a closed chamber therewith; a band encircling the wall of the membrane; a clamp adjustably securing the band around the wall to hold the membrane in place on the plate; means for filling and emptying the chamber opening into said chamber through the axial center of said base plate; a handle for use in carrying the container a plurality of cords engaged with said handle and depending therefrom: attachment means securing ends of the cords to said skirt at circumferentially spaced points; a guiding and centering member for the cords positioned over the membrane and under the handle, said member having a plurality of spaced holes and a slot between the holes, said cords extending through said holes respectively, so the cords extend tautly around the membrane in circumferentially spaced positions when the membrane is stretched; and a tape secured to the handle and extending slidably through said slot and between the cords to prevent twisting of said member and tangling of the cords.
Claim 2
Dependent Claim
225 words
A self-pressurized container for liquid, comprising: a circular base plate having an axially extending, depending, cylindrical skirt with radially extending peripheral rim: a circular elastic membrane having an axially extending, depending, cylindrical wall surrounding said skirt, said membrane having an inner circumferential recess receiving and engaging the rim of the base plate so that the membrane overlays the plate and defines a closed chamber therewith; a band encircling the wall of the membrane; a clamp adjustably securing the band around the wall to hold the membrane in place on the plate; means for filling and emptying the chamber opening into said chamber through the axial center of said base plate; a handle for use in carrying the container a plurality of cords engaged with said handle and depending therefrom: attachment means securing ends of the cords to said skirt at circumferentially spaced points; a guiding and centering member for the cords positioned over the membrane and under the handle, said member having a plurality of spaced holes and a slot between the holes, said cords extending through said holes respectively, so the cords extend tautly around the membrane in circumferentially spaced positions when the membrane is stretched; and a tape secured to the handle and extending slidably through said slot and between the cords to prevent twisting of said member and tangling of the cords.
Claim 3
Dependent Claim
37 words
A self-pressurized container as defined in claim 1, wherein said plate is rigid and bowed with an upper concave surface to resist bending and cracking when the membrane is stretched under pressure of liquid in said chamber.
Claim 4
Dependent Claim
38 words
A self-pressurized container as defined in claim 2, wherein said membrane in an unstretched condition is thicker at its center than at its periphery to resist bursting under pressure when stretched by liquid under pressure in said chamber.
Claim 5
Dependent Claim
53 words
A self-pressurized container as defined in claim 1, wherein said tape carries a scale with markings calibrated to indicate liquid volumes, the quantity of liquid in said chamber being indicated on the scale by the guide member at all positions thereof along the tape when the cords are taut around the stretched membrane.
Claim 6
Dependent Claim
27 words
A self-pressurized container as defined in claim 4, wherein said skirt of the base plate has three depending legs to support the container stably on irregular surfaces.
Claim 7
Dependent Claim
31 words
A self-pressurized container as defined in claim 5, wheRein said skirt has a plurality of circumferentially spaced notches, said attachment means for the cords comprising clips engaged respectively in said notches.
Claim 8
Dependent Claim
88 words
A self-pressurized container as defined in claim 6, wherein the means for filling and emptying the chamber comprises a flexible hose extending radially outward of the base plate between said legs; valve means on the hose near its outer end for controlling flow of liquid therethrough; and a flared nozzle at the outer end of the hose for engaging on a faucet to fill said chamber with liquid, said nozzle having internal, flexible gripping means for frictionally gripping the faucet while filling the chamber with liquid under pressure.
Claim 9
Dependent Claim
38 words
A self-pressurized container as defined in claim 7, wherein said means for filling and emptying the chamber comprises a fitting secured to the plate axially thereof, the inner other end of said hose being secured to said fitting.
Claim 10
Dependent Claim
28 words
A self-pressurized container as defined in claim 8, further comprising a leakproof joint rotatably securing said fitting to the plate to facilitate rotating the hose to different positions.
References Cited (Backward Citations)
US2735589A
Cited
US3158296A
Cited
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 |