Patent US4077750A successfully refreshed from Google Patents.
US4077750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable liquid dispensing pump
Assignee: Individual
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Filing: 1976-01-28
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Granted: 1978-03-07
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Expires: 1996-01-28
Abstract
Abstract A liquid dispensing pump particularly designed for dispensing measured amounts of edible liquids such as molten chocolate into molds, that may be of varying capacities. The pump dispenses, from a filled pump barrel, on outward movement of a valved piston and the quantity dispensed is determined by the position of a stop pin in a notched tube that is moved in unison with the piston rod and pivoted stop plates that limit movement of the stop pin. The pump is readily disassembled for cleaning and is adapted for easy mounting on a tank.
Inventors
- 👤 George H. Hake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:03
CPC Classifications
F; F04; F04B; F04B15/00; F04B15/02; F04B53/00; F04B53/10; F04B53/102; F04B53/103; F04B53/12; F04B53/125; F04B53/127; F04B53/128; F04B9/00; F04B9/14
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
214 words
An adjustable dispensing pump for liquids comprising: a base having a passage therethrough for connection to a source of liquid, an inwardly opening check valve mounted in said passage; a separate elongated barrel, having one end thereof removably mounted in said base, forming a pump chamber communicating through said check valve with said source of liquid; a spout member removably carried by the other end of said barrel, said spout member having a discharge chamber communicating with said pump chamber and a discharge nozzle communicating with said discharge chamber; a piston slidably reciprocatable in said barrel; a check valve carried by said piston permitting flow therethrough only from the rear of said piston to the front thereof; a piston rod operatively attached to said piston on the front thereof and extending through said spout member; an operating handle connected to said piston rod; and means, slidably carried by and having a portion cooperating with said spout member to arrest outward movement of said piston, said means comprising a tube removably attached to and movable by said handle with said piston rod for selectively determining the volume of liquid dispensed by an outward stroke of said piston, said tube being provided with slidable and rotatable means therein for restricting the length of the piston stroke.
Claim 2
Dependent Claim
214 words
An adjustable dispensing pump for liquids comprising: a base having a passage therethrough for connection to a source of liquid, an inwardly opening check valve mounted in said passage; a separate elongated barrel, having one end thereof removably mounted in said base, forming a pump chamber communicating through said check valve with said source of liquid; a spout member removably carried by the other end of said barrel, said spout member having a discharge chamber communicating with said pump chamber and a discharge nozzle communicating with said discharge chamber; a piston slidably reciprocatable in said barrel; a check valve carried by said piston permitting flow therethrough only from the rear of said piston to the front thereof; a piston rod operatively attached to said piston on the front thereof and extending through said spout member; an operating handle connected to said piston rod; and means, slidably carried by and having a portion cooperating with said spout member to arrest outward movement of said piston, said means comprising a tube removably attached to and movable by said handle with said piston rod for selectively determining the volume of liquid dispensed by an outward stroke of said piston, said tube being provided with slidable and rotatable means therein for restricting the length of the piston stroke.
Claim 3
Dependent Claim
25 words
A dispensing pump as defined in claim 1 wherein said base is provided with means for clamping it to a flanged outlet from a container.
Claim 4
Dependent Claim
32 words
A dispensing pump as defined in claim 2 wherein said clamping means comprises a plurality of bolts mounted in said base engageable with the edges of a flanged outlet from a container.
Claim 5
Dependent Claim
56 words
A dispensing pump as defined in claim 3 wherein the heads of said bolts extend outwardly from said base parallel with said barrel and engage over said edges and wherein the head of one of said bolts is reduced in area and is shaped whereby to engage an edge of said base in certain angular positions.
Claim 6
Dependent Claim
62 words
A dispensing pump as defined in claim 1 wherein said tube is provided with a longitudinal slot having spaced notches is one edge thereof and said slidable and rotatable means includes a plug movable in said tube and carrying a stop pin selectively engageable in one of said notches and adapted to contact said spout member to arrest movement of said piston.
Claim 7
Dependent Claim
26 words
A dispensing pump as defined in claim 5 wherein additional, pivoted means carried by said spout member is provided for selective cooperation with said stop pin.
Claim 8
Dependent Claim
28 words
A dispensing pump as defined in claim 6 wherein said pivoted means comprises a stop plate that can be interposed between said stop pin and said spout member.
Claim 9
Dependent Claim
31 words
A dispensing pump as defined in claim 6 wherein said pivoted means comprises a plurality of stop plates that can be selectively interposed between said stop pin and said spout member.
Claim 10
Dependent Claim
52 words
A dispensing pump as defined in claim 8 wherein said stop plates are pivotally mounted on a rod-like member carried by said spout member, wherein said check valves are provided with annular reciprocatable, valve discs and springs biasing said valve discs to sealing positions, and wherein said check valves are axially aligned.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-06 | 1981-09-05 | 1982-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-06 | 1985-09-05 | 1986-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-06 | 1989-09-05 | 1990-03-07 | $7700.00 | Window Closed / Lapsed |