US3572552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaphragm dispenser
Assignee: Individual
•
Filing: 1969-07-25
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Granted: 1971-03-30
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Expires: 1989-07-25
Abstract
Abstract The present invention comprises a diaphragm dispenser for fluids and includes plural charge-receiving chambers having respective variable upper extremities. The latter are defined by a diaphragm means which is selectively deformable, and in desired degrees, within said chambers as fluid pressure is applied to the upper side of the diaphragm. This is accomplished in one form of the invention by a plunger and, preferably, the same actuates a given hydraulic fluid exposed between the diaphragm and the plunger. The plunger is preferably calibrated so that a given depression of the operating piston thereof effects predetermined incremental displacements of respective portions of the diaphragm within the charged chambers so that the latter may receive and discharge respective portions of a test liquid in a manner hereinafter described.
Inventors
- 👤 Perry W Guinn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:11
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/02; B01L3/021; G; G01; G01F; G01F11/00; G01F11/02; G01F11/08; B01L2300/00; B01L2300/08; B01L2300/0809; B01L2300/0829; B01L2400/00; B01L2400/04; B01L2400/0475; B01L2400/0481
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
81 words
A fluid dispenser including, in combination, structure defining plural, vertically disposed chambers, a cavity horizontally disposed over said chambers, flexible diaphragm means disposed between said chambers and said cavity and forming a lower boundary of said cavity, fluid means disposed in said cavity for depressing said diaphragm means within said chambers when said fluid means is under pressure, and means for releasably applying pressure to said fluid means connected to said structure and communicating with said cavity above said diaphragm means.
Claim 2
Dependent Claim
81 words
A fluid dispenser including, in combination, structure defining plural, vertically disposed chambers, a cavity horizontally disposed over said chambers, flexible diaphragm means disposed between said chambers and said cavity and forming a lower boundary of said cavity, fluid means disposed in said cavity for depressing said diaphragm means within said chambers when said fluid means is under pressure, and means for releasably applying pressure to said fluid means connected to said structure and communicating with said cavity above said diaphragm means.
Claim 3
Dependent Claim
13 words
Structure according to claim 1 wherein said pressure applying means comprises a syringe.
Claim 4
Dependent Claim
60 words
Structure according to claim 1 wherein said pressure applying means comprises a syringe having a cylinder, a reciprocatingly translatable plunger operatively disposed within said cylinder, and a tube affixed to an and communicating with said cylinder and said cavity of said structure above said diaphragm means, said fluid means filling said cylinder beneath said plunger, said tube, and said cavity.
Claim 5
Dependent Claim
13 words
Structure according to claim 1 wherein said fluid means comprises a hydraulic liquid.
Claim 6
Dependent Claim
28 words
Structure according to claim 1 wherein said dispenser includes plural, needlelike cylinders communicating with said chambers and fixedly disposed with respect to and depending from said defining structure.
Claim 7
Dependent Claim
18 words
The dispenser of claim 1 wherein said diaphragm means comprises an elastomeric diaphragm sheet disposed over said chambers.
Claim 8
Dependent Claim
13 words
The dispenser of claim 1 wherein said fluid means comprises a gaseous medium.
Claim 9
Dependent Claim
19 words
The dispenser of claim 1 wherein said fluid means comprises a hydraulic liquid, said pressure means comprising a syringe.
Claim 10
Dependent Claim
13 words
The dispenser of claim 3 wherein said syringe includes a plunger return spring.
Claim 11
Dependent Claim
22 words
The structure of claim 5 wherein said dispenser includes end support means disposed upon opposite sides of said cylinders and depending therebeneath.
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) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |