US4014629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump for pumping both low viscosity and high viscosity fluids
Assignee: General Electric Co
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Filing: 1976-01-05
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Granted: 1977-03-29
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Expires: 1996-01-05
Abstract
Abstract An improved pump for pumping both low viscosity and high viscosity fluids, which contains therein a body with three cavities, a hollow cylinder fitting in the first cavity and attached at its lower end, a hollow cylinder head containing therein a first valve means; having in the second cavity of said body of said pump a second valve means with a shaft positioned at the top end of said hollow cylinder such that said first valve means and said second valve means are positioned to ride freely on said shaft. Finally, a kick plate means positioned at the end of said shaft and located such that it can move freely within said third cavity means. When the pump is pumping high viscosity fluids it is the function of the kick plate means to push or force the high viscosity fluid up from said third cavity into the second cavity and then through the hollow cylinder head into the first cavity means and out through the outlet means in said pump. The kick plate means does not affect the efficiency of the pump when it is pumping low viscosity fluids.
Inventors
- 👤 Robert M. Elsworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:18
CPC Classifications
F; F04; F04B; F04B15/00; F04B15/02; F04B53/00; F04B53/10; F04B53/1002; F04B53/1007; F04B53/1017; F04B53/12; F04B53/125; F04B53/127; F04B53/128; F04B2015/026
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
177 words
An improved pump for pumping fluids with a viscosity ranging from 1 to 1 million centipoise at 25° C without any mechanical adjustments comprising a body having therein a first cavity, a second cavity connecting to said first cavity and a third cavity connecting to said second cavity, a hollow cylinder with a closed end and an open end positioned within said first cavity such that said open end is totally within said first cavity, a cylinder head with a fourth cavity therein connected to the open end of said hollow cylinder, a shaft having a first end and a second end connected to said closed end of said hollow cylinder at its first end and passing through said first, second, third and fourth cavities, a first valve means positioned about said shaft and positioned to move in said fourth cavity, a second valve means positioned about said shaft and positioned to move in said second cavity and kick plate means connected at said second end of said shaft and positioned to move within said third cavity.
Claim 2
Dependent Claim
177 words
An improved pump for pumping fluids with a viscosity ranging from 1 to 1 million centipoise at 25° C without any mechanical adjustments comprising a body having therein a first cavity, a second cavity connecting to said first cavity and a third cavity connecting to said second cavity, a hollow cylinder with a closed end and an open end positioned within said first cavity such that said open end is totally within said first cavity, a cylinder head with a fourth cavity therein connected to the open end of said hollow cylinder, a shaft having a first end and a second end connected to said closed end of said hollow cylinder at its first end and passing through said first, second, third and fourth cavities, a first valve means positioned about said shaft and positioned to move in said fourth cavity, a second valve means positioned about said shaft and positioned to move in said second cavity and kick plate means connected at said second end of said shaft and positioned to move within said third cavity.
Claim 3
Dependent Claim
45 words
The pump of claim 1 further including inlet means connected to said body at said third cavity to introduce fluid to said third cavity and outlet means connected to said body at said first cavity in proximity to the closed end of said hollow cylinder.
Claim 4
Dependent Claim
64 words
The pump of claim 1 wherein the cylinder head with the fourth cavity therein has resting means for said first valve means adjacent to the cavity in said hollow cylinder which stops said first valve means from moving from said fourth cavity into hollow part of said cylinder but allows fluid to move through said fourth cavity into the hollow part of said cylinder.
Claim 5
Dependent Claim
45 words
The pump of claim 3 wherein said cylinder head has a first valve seat means defining said fourth cavity adjacent to said second cavity such that when said first valve means rests thereon no fluid can pass from said second cavity into said fourth cavity.
Claim 6
Dependent Claim
48 words
The pump of claim 4 wherein said first valve means comprises half of a spherical ball positioned about said shaft so that it can ride freely thereon such that the spherical part of the ball is positioned such that it can rest in said first valve seat means.
Claim 7
Dependent Claim
67 words
The pump of claim 1 wherein said second cavity in said body is defined by resting means for said second valve means located where said second cavity connects to said first cavity which resting means stops said second valve means from moving out said second cavity into said first cavity while permitting fluid to move through said second cavity into said first cavity and said fourth cavity.
Claim 8
Dependent Claim
50 words
The pump of claim 6 wherein said second cavity in said body is further defined by second valve seat means located where said second cavity connects to said third cavity such that when said second valve means rests thereon no fluid can pass through said second cavity and third cavity.
Claim 9
Dependent Claim
47 words
The pump of claim 7 wherein said second valve means comprises half of a spherical ball positioned about said shaft so that it rides freely thereon such that the spherical part of the ball is positioned such that it can rest in said second valve seat means.
Claim 10
Dependent Claim
47 words
The pump of claim 9 wherein said hollow cylinder has an opening therein in proximity to said cylinder head such that the fluid can flow from said hollow cylinder head through said hollow cylinder and said openings into said first cavity and out to said outlet means.
Claim 11
Dependent Claim
48 words
The pump of claim 9 wherein said hollow cylinder in proximity to its open end is filled with the fluid to be pumped during operation and that portion of said hollow cylinder in proximity to its closed end is at all times during operation filled with a gas.
Claim 12
Dependent Claim
71 words
The pump of claim 10 wherein said kick plate means comprises a flat plate connected perpendicular to the end of said shaft and of such dimensions such that the edges of said flat plate are in close proximity to the walls of said body in said third cavity and such during operation of the pump said flat plate forces the fluid being pumped from said third cavity into said second cavity.
References Cited (Backward Citations)
US2627814A
Cited
US3121292A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-28 | 1980-09-27 | 1981-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-28 | 1984-09-27 | 1985-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-28 | 1988-09-27 | 1989-03-29 | $7700.00 | Window Closed / Lapsed |