Patent US3893600A successfully refreshed from Google Patents.
US3893600A
Expired / Lapsed
US
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Liquid gravity feed system
Assignee: Individual
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Filing: 1974-04-24
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Granted: 1975-07-08
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Expires: 1994-04-24
Abstract
Abstract A liquid gravity feed system consisting of a nozzle connected to a liquid reservoir and carrying a clamping member to normally shut-off the flow of liquid to the nozzle. Contact between said nozzle and a syringe barrel will move the clamping member to permit the flow of liquid to the nozzle. Means are provided to regulate the rate of flow of the liquid to the nozzle when the clamping member is moved to permit the flow of liquid to the nozzle. The regulating means is adjusted out of regulating position when it is desired to replace or sterilize the connection between the reservoir and the nozzle.
Inventors
- 👤 Walter A Shields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:15
CPC Classifications
B; B67; B67D; B67D3/00; A; A61; A61M; A61M5/00; B65; B65B; B65B3/00; B65B3/04; B65B3/06; B65B39/00; B65B39/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
105 words
In a liquid gravity feed system, a liquid reservoir having an outlet, a nozzle reciprocally supported below the reservoir, a flexible conduit connecting the reservoir outlet to the nozzle, an anvil reciprocally mounted between the reservoir and the nozzle and supporting an intermediate portion of the flexible conduit, and a clamping member carried by the nozzle above the anvil and yieldingly urged to squeeze the conduit against the anvil and close said conduit, whereby reciprocal movement of the nozzle toward the reservoir will move the clamping member from the anvil and permit the flow of liquid through the conduit from the reservoir to the nozzle.
Claim 2
Dependent Claim
105 words
In a liquid gravity feed system, a liquid reservoir having an outlet, a nozzle reciprocally supported below the reservoir, a flexible conduit connecting the reservoir outlet to the nozzle, an anvil reciprocally mounted between the reservoir and the nozzle and supporting an intermediate portion of the flexible conduit, and a clamping member carried by the nozzle above the anvil and yieldingly urged to squeeze the conduit against the anvil and close said conduit, whereby reciprocal movement of the nozzle toward the reservoir will move the clamping member from the anvil and permit the flow of liquid through the conduit from the reservoir to the nozzle.
Claim 3
Dependent Claim
65 words
A liquid gravity feed system as claimed in claim 1, wherein the means to adjust the lever to vary the space between the lever and the anvil comprises a bracket mounted on the slide above the lever, and a screw adjustably carried by the bracket to contact the lever and vary the space between the lever and the anvil by the adjustment of the screw.
Claim 4
Dependent Claim
45 words
A liquid gravity feed system as claimed in claim 2, wherein the bracket is adjustably mounted on the slide to have adjustment toward and away from the lever and position the screw out of contact with the lever to permit the removal of the conduit.
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) | 1978-07-07 | 1979-01-06 | 1979-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-07 | 1983-01-06 | 1983-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-07 | 1987-01-06 | 1987-07-08 | $7700.00 | Window Closed / Lapsed |