US3597125A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid injector assembly for piston pumps
Assignee: Hypro LLC
•
Filing: 1969-07-01
•
Granted: 1971-08-03
•
Expires: 1989-07-01
Abstract
Abstract Induction means for use in combination with a positive displacement pump, the pump having a pumping chamber, a reciprocating piston disposed in a cylinder communicating with the chamber, along with inlet and outlet valves for intermittent isolation of the chamber during the pumping strokes, the induction means being arranged in communication with the pumping chamber and being adapted to induce fluid flow into the pumping chamber for discharge through the positive displacement pump structure, the induction means including induction inlet means for coupling the chamber to a supply reservoir, an adjustable control valve having a first orifice and an adjustable valve element cooperating with the orifice, poppet valve means disposed in a second orifice and in communication with the first orifice and arranged to open upon the suction stroke of the pump, and to close upon the pressure stroke, and an injection chamber means having a third orifice in direct communication with the pumping chamber and having baffle means interposed between the third orifice and the injection chamber.
Inventors
- 👤 Harry J Sadler
- 👤 Ramon Pareja
- 👤 John Leschisin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:41
CPC Classifications
F; F04; F04B; F04B13/00; F04B13/02; F04B1/00; F04B1/02
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
207 words
In combination with a positive displacement pump having a pumping chamber, a reciprocating piston disposed in a cylinder communicating with said chamber, and inlet and outlet valve means for intermittent isolation of said chamber from a supply conduit and a discharge conduit respectively; a. induction means communicating with said pumping chamber for inducing fluid flow into said pumping chamber for discharge through said discharge conduit and including: 1. induction inlet means for coupling said induction means to a supply reservoir of fluid to be introduced into said pumping chamber; 2. adjustable control valve means including a first orifice and an adjustable valve element cooperating with said first orifice; 3. valve means disposed in a second orifice and in communication with said first orifice and arranged to open upon the suction stroke and to close upon the pressure stroke of said reciprocating piston; 4. injection chambeR means consisting of an induction chamber having a wall with a third orifice formed therein, the third orifice establishing direct communication between said pumping chamber and said induction chamber and having baffle means interposed in the communication between said third orifice and said induction chamber for substantially isolating said induction chamber and restricting communication from said pressure chamber to said induction chamber.
Claim 2
Dependent Claim
207 words
In combination with a positive displacement pump having a pumping chamber, a reciprocating piston disposed in a cylinder communicating with said chamber, and inlet and outlet valve means for intermittent isolation of said chamber from a supply conduit and a discharge conduit respectively; a. induction means communicating with said pumping chamber for inducing fluid flow into said pumping chamber for discharge through said discharge conduit and including: 1. induction inlet means for coupling said induction means to a supply reservoir of fluid to be introduced into said pumping chamber; 2. adjustable control valve means including a first orifice and an adjustable valve element cooperating with said first orifice; 3. valve means disposed in a second orifice and in communication with said first orifice and arranged to open upon the suction stroke and to close upon the pressure stroke of said reciprocating piston; 4. injection chambeR means consisting of an induction chamber having a wall with a third orifice formed therein, the third orifice establishing direct communication between said pumping chamber and said induction chamber and having baffle means interposed in the communication between said third orifice and said induction chamber for substantially isolating said induction chamber and restricting communication from said pressure chamber to said induction chamber.
Claim 3
Dependent Claim
18 words
adjustable control valve means including a first orifice and an adjustable valve element cooperating with said first orifice;
Claim 4
Dependent Claim
18 words
adjustable control valve means including a first orifice and an adjustable valve element cooperating with said first orifice;
Claim 5
Dependent Claim
34 words
The combination as defined in claim 1 being particularly characterized in that the lateral surface of the valve means disposed in said second orifice prevents direct fluid flow between said second and third orifices.
Claim 6
Dependent Claim
33 words
valve means disposed in a second orifice and in communication with said first orifice and arranged to open upon the suction stroke and to close upon the pressure stroke of said reciprocating piston;
Claim 7
Dependent Claim
33 words
valve means disposed in a second orifice and in communication with said first orifice and arranged to open upon the suction stroke and to close upon the pressure stroke of said reciprocating piston;
Claim 8
Dependent Claim
34 words
The combination as defined in claim 1 being particularly characterized in that said control valve means is a needle valve tapered along its elongated axis and adapted to operatively extend into said second orifice.
Claim 9
Dependent Claim
64 words
injection chambeR means consisting of an induction chamber having a wall with a third orifice formed therein, the third orifice establishing direct communication between said pumping chamber and said induction chamber and having baffle means interposed in the communication between said third orifice and said induction chamber for substantially isolating said induction chamber and restricting communication from said pressure chamber to said induction chamber.
Claim 10
Dependent Claim
64 words
injection chambeR means consisting of an induction chamber having a wall with a third orifice formed therein, the third orifice establishing direct communication between said pumping chamber and said induction chamber and having baffle means interposed in the communication between said third orifice and said induction chamber for substantially isolating said induction chamber and restricting communication from said pressure chamber to said induction chamber.
Claim 11
Dependent Claim
47 words
The combination as set forth in claim 1 being particularly characterized in that the valve means disposed in the second orifice is a spring-biased poppet valve having a sealing surface at one end thereof and a stem extending away from said sealing surface in opposed disposition therefrom.
Claim 12
Dependent Claim
39 words
The combination as defined in claim 4 being particularly characterized in that spring means are provided for spring biasing said poppet, said spring means being helically wound about said stem, and having a support surface adjacent said baffle area.
Claim 13
Dependent Claim
31 words
The combination as defined in claim 5 being particularly characterized in that said spring, stem, poppet, injection chamber means, and second and third orifices are all arranged concentrically, one with another.
References Cited (Backward Citations)
US1186486A
Cited
US1301282A
Cited
US1277383A
Cited
US2266126A
Cited
US3042981A
Cited
US3140049A
Cited
US3259308A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |