US3653556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid dispensing apparatus
Assignee: Hycel Inc
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Filing: 1970-01-05
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Granted: 1972-04-04
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Expires: 1990-01-05
Abstract
Abstract A manually operated liquid dispensing apparatus for use in dispensing chemical reagents and corrosive liquids from a container. A glass plunger having a ground glass piston slidable in a glass cylinder and a flat ground glass check valve in the lower end of each of the cylinder and plunger whereby corrosive liquids can be admitted into the cylinder and discharged through the plunger. The plunger having calibration means and an adjustable stop for dispensing a measured amount of liquid therefrom. A flexible outlet hose connected to the plunger outlet and a hose support adapted to be connected to the apparatus and including a hose holding means and also including means for closing the end of the hose for eliminating drippage and evaporation.
Inventors
- 👤 John J Moran
- 👤 Robert C Querry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:31
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/02; B01L3/0282; B05; B05B; B05B11/00; B05B11/01; B05B11/10; B05B11/1001; B05B11/1015; G; G01; G01F; G01F11/00; G01F11/02; G01F11/04; G01F11/06
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
184 words
A liquid dispensing apparatus for dispensing liquid from a container comprising, a glass cylinder adapted to be supported in the container, a glass plunger having a ground glass piston slidable in the cylinder and including an outlet adjacent the plunger top, a check valve in the lower end of each of the cylinder and plunger, each check valve including a flat ground glass seating surface and a flat ground glass valve element with the inlet into the valve including a capillary tube to provide a large seating surface, an adjustable calibration stop surrounding the plunger and adapted to contact the top of the container thereby limiting the travel of the plunger into the cylinder for dispensing measured amounts of fluid, calibration means on the plunger indicating the amount of liquid being dispensed by actuation of the plunger to its extents of travel, a flexible outlet hose connected to the plunger outlet, a hose support adapted to be connected to the apparatus, said support including hose holding means, and means on the support for closing the end of the hose for eliminating drippage and evaporation.
Claim 2
Dependent Claim
184 words
A liquid dispensing apparatus for dispensing liquid from a container comprising, a glass cylinder adapted to be supported in the container, a glass plunger having a ground glass piston slidable in the cylinder and including an outlet adjacent the plunger top, a check valve in the lower end of each of the cylinder and plunger, each check valve including a flat ground glass seating surface and a flat ground glass valve element with the inlet into the valve including a capillary tube to provide a large seating surface, an adjustable calibration stop surrounding the plunger and adapted to contact the top of the container thereby limiting the travel of the plunger into the cylinder for dispensing measured amounts of fluid, calibration means on the plunger indicating the amount of liquid being dispensed by actuation of the plunger to its extents of travel, a flexible outlet hose connected to the plunger outlet, a hose support adapted to be connected to the apparatus, said support including hose holding means, and means on the support for closing the end of the hose for eliminating drippage and evaporation.
Claim 3
Dependent Claim
38 words
The apparatus of claim 1 wherein the hose holding means includes an opening through which the flexible hose is slidable but frictionally held, and the closing means includes a drip cup for receiving the end of the hose.
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) | 1975-04-04 | 1975-10-04 | 1976-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-04 | 1979-10-04 | 1980-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-04 | 1983-10-04 | 1984-04-04 | $7700.00 | Window Closed / Lapsed |