# US 4,391,572 A · Angular position belt valve pump

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- Number: US 4,391,572 A
- Document ID: US4391572A
- Status: Granted
- Kind: A
- Application number: 06/206,302
- Filed: 1980-11-12
- Granted: 1983-07-05
- Earliest claimed: 1980-11-12
- Inventors: Hyok S. Lew
- Web page: https://patentgrep.com/patent/US4391572A

## CPC

- F04C 5/00: Rotary-piston machines or pumps with the working-chamber walls at least partly resiliently deformable (such pumps specially adapted for elastic fluids F04C18/00)
- F04B 43/0063: {bell-shaped flexible members}
- Y10T 137/86541: Plug
- F04C: ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS (engines F03C); ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04B: POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS (machines for liquids, or pumps, of rotary-piston or oscillating-piston type F04C; non-positive-displacement pumps F04D; pumping of fluid by direct contact of another fluid or by using inertia of fluid to be pumped F04F)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A pump functioning as a vacuum pump or a pressure pump employing the angular position belt valve is disclosed. Said angular position belt valve comprises a plurality of axial holes disposed within a cylindrical pulley, each of which axial holes has one or more openings to the cylindrical surface of said pulley, which is wrapped by a belt over a predetermined wrap angle. When said pulley is rotated, said holes remain closed by the belt as long as those holes are within the wrap angle. When said holes are rotated out of the wrap angle, those holes become open instantly until they are rotated back into the wrap angle. Said angular position belt valve becomes an important part of a pump when each of said axial holes is connected to each of a plurality of expandingcontracting chambers disposed around the same axis of the rotation as that of the angular position belt valve wherein the wrap angle is set in such a way that a first angular position valve allows the pumped medium to enter the expanding chambers while a second angular position valve allows the pumped medium to leave the contracting chambers.

## Claims

### Claim 1

An angular position belt valve pump or motor comprising:
(a) an angular position belt valve including:
(1) a first rotatable circular cylinder including a plurality of axial holes, each of said axial holes having one or more openings to the cylindrical surface of said first rotatable circular cylinder;
(2) a first belt wrapped around said first rotatable circular cylinder over a wrap angle less than 360 degrees;
(3) first one or more idlers training the path and the wrap angle of said first belt; wherein, the plurality of said one or more openings disposed on said cylindrical surface of said first rotatable circular cylinder and connected to each of said plurality of axial holes become cyclically open and closed as said plurality of said one or more openings become wrapped and unwrapped by said first belt when said first rotatable circular cylinder is rotated;
(b) a pumping assembly including:
(1) a second rotatable circular cylinder rigidly connected to said first rotatable circular cylinder of said angular position belt valve in a coaxial relationship wherein said plurality of the axial holes included in said first rotatable circular cylinder extend to said second rotatable circular cylinder;
(2) a circular cylindrical shell disposed around said second rotatable circular cylinder in an eccentric relationship;
(3) a plurality of the expanding-contracting chambers disposed intermediate said second rotatable circular cylinder and said circular cylindrical shell; each of said plurality of the expanding-contracting chambers including one or more openings to each of said axial holes and one or more openings to the cylindrical surface of said circular cylindrical shell;
(4) a second belt wrapped around said circular cylindrical shell over a wrap angle less than 360 degrees; and
(5) second one or more idlers training the path and the wrap angle of said second belt and maintaining the eccentric position of said circular cylindrical shell with respect to said second rotatable circular cylinder wherein the expanding chamber of said plurality of the expanding-contracting chambers takes in the fluid medium through said one or more openings to the cylindrical surface of said first rotatable circular cylinder unwrapped by said first belt and the contracting chamber of said plurality of the expanding-contracting chambers discharges the fluid medium through said one or more openings to the cylindrical surface of said circular cylindrical shell unwrapped by said second belt when said first and second rotatable cylinders are rotated.

### Claim 2

An angular position belt valve pump or motor comprising:
(a) an angular position belt valve including;
(1) a first rotatable circular cylinder including a plurality of axial holes, each of said axial holes having one or more openings to the cylindrical surface of said first rotatable circular cylinder;
(2) a first belt wrapped around said first rotatable circular cylinder over a wrap angle less than 360 degrees;
(3) first one or more idlers training the path and the wrap angle of said first belt; wherein, the plurality of said one or more openings disposed on said cylindrical surface of said first rotatable circular cylinder and connected to each of said plurality of axial holes become cyclically open and closed as said plurality of said one or more openings become wrapped and unwrapped by said first belt when said first rotatable circular cylinder is rotated;
(b) a pumping assembly including;
(1) a second rotatable circular cylinder rigidly connected to said first rotatable circular cylinder of said angular position belt valve in a coaxial relationship wherein said plurality of the axial holes included in said first rotatable circular cylinder extend to said second rotatable circular cylinder;
(2) a circular cylindrical shell disposed around said second rotatable circular cylinder in an eccentric relationship;
(3) a plurality of the expanding-contracting chambers disposed intermediate said second rotatable circular cylinder and said circular cylindrical shell; each of said plurality of the expanding-contracting chambers including one or more openings to each of said axial holes and one or more openings to the cylindrical surface of said circular cylindrical shell;
(4) a second belt wrapped around said circular cylindrical shell over a wrap angle less than 360 degrees; and
(5) second one or more idlers training the path and the wrap angle of said second belt and maintaining the eccentric position of said circular cylindrical shell with respect to said second rotatable circular cylinder; wherein the expanding chamber of said plurality of expanding-contracting chambers takes in the fluid medium through said one or more openings to the cylindrical surface of said circular cylindrical shell unwrapped by said second belt and the contracting chamber of said plurality of expanding-contracting chamber discharges the fluid medium through said one or more openings to the cylindrical surface of said first rotatable circular cylinder unwrapped by said first belt when said first and second rotatable circular cylinders are rotated.

### Claim 3

An angular position belt valve pump or motor comprising:
(a) a first angular position belt valve including;
(1) a first rotatable circular cylinder including a plurality of axial holes, each of said axial holes having one or more openings to the cylindrical surface of said first rotatable circular cylinder;
(2) a first belt wrapped around said first rotatable circular cylinder over a wrap angle less than 360 degrees;
(3) first one or more idlers training the path and the wrap angle of said first belt; wherein the plurality of said one or more openings disposed on said cylindrical surface of said first rotatable circular cylinder and connected to each of said plurality of axial holes become cyclically open and closed as said plurality of said one or more openings become wrapped and unwrapped by said first belt when said first rotatable circular cylinder is rotated;
(b) a second angular position belt valve including
(1) a second rotatable circular cylinder including a plurality of axial holes, each of said axial holes having one or more openings to the cylindrical surface of said second rotatable circular cylinder;
(2) a second belt wrapped around said second rotatable circular cylinder over a wrap angle less than 360 degrees;
(3) second one or more idlers training the path and the wrap angle of said second belt; wherein the plurality of said one or more openings disposed on said cylindrical surface of said second rotatable circular cylinder and connected to each of said plurality of the axial holes become cyclically open and closed as said plurality of one or more openings become wrapped and unwrapped by said second belt when said second rotatable circular cylinder is rotated, wherein said wrap angle of said second angular position belt valve is out of phase with respect to the wrap angle of said first angular position belt valve;
(c) a pumping assembly comprising;
(1) a third rotatable circular cylinder rigidly connected to said first and second rotatable cylinders in a coaxial relationship wherein said plurality of axial holes disposed through said first and second rotatable circular cylinders extend to said third rotatable circular cylinder;
(2) a circular cylindrical shell disposed around said third rotatable circular cylinder in an eccentric relationship;
(3) a plurality of the expanding-contracting chambers disposed intermediate said third rotatable circular cylinder and said circular cylindrical shell, each of said plurality of the expanding-contracting chambers including one or more openings to each of said plurality of the axial holes disposed in said first rotatable circular cylinder and one or more openings to each of said plurality of holes disposed in said second rotatable circular cylinder wherein the expanding chamber of said plurality of the expanding-contracting chambers takes in the fluid medium through said one or more openings to the cylindrical surface of said first rotatable circular cylinder unwrapped by said first belt and the contracting chamber of said plurality of the expanding-contracting chambers discharges the fluid medium through said one or more openings to the cylindrical surface of said second rotatable circular cyclinder unwrapped by said second belt, when said first, second and third rotatable circular cylinders are rotated.