# US 10,371,137 B2 · Metering for fluid motor and pump combination > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,371,137 B2 - Document ID: US10371137B2 - Status: Granted - Kind: B2 - Application number: 15/256,790 - Filed: 2016-09-06 - Published: 2018-03-08 - Granted: 2019-08-06 - Earliest claimed: 2016-09-06 - Assignees: Hamilton Sundstrand Corporation - Applicants: Hamilton Sundstrand Corporation - Inventors: Richard A. Himmelmann - Web page: https://patentgrep.com/patent/US10371137B2 ## CPC - F04B 43/10: Pumps having fluid drive - B64G 1/60: Crew or passenger accommodations - F04B 9/042: {the means being cams} - F04B 9/10: the fluid being liquid - F04B 13/02: of two or more fluids at the same time - F04B 15/04: the fluids being hot or corrosive (for liquids near their boiling point, e.g. under subnormal pressure, F04B15/06) - F04B 43/1253: {by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing} - F04B 43/1292: {Pumps specially adapted for several tubular flexible members} - F04B 49/02: Stopping, starting, unloading or idling control - 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) - B64G: COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR ## Abstract A system has a fluid motor for receiving a pressurized fluid motor causing actuation of the fluid motor, with the fluid motor having a motor inlet and a motor outlet. The motor fluid is delivered from the motor outlet into a container. The motor rotor drives a pump rotor. The pump rotor drives a fluid from a pump inlet to a pump outlet, with the pump outlet being connected into the container. A metering system allows a precise amount of rotation of the motor rotor and the pump rotor to meter the motor fluid and the pump fluid into the container. ## Claims ### Claim 1 A system comprising: a fluid motor for receiving a pressurized motor fluid causing actuation of said fluid motor, with said fluid motor having a motor inlet and a motor outlet, and said motor fluid being delivered from said motor outlet into a container, and a motor rotor driving a pump rotor, said pump rotor driving a pump fluid from a pump inlet to a pump outlet, with said pump outlet being connected into said container; a metering system for controlling an amount of rotation of said motor rotor and said pump rotor to meter said motor fluid and said pump fluid into said container; and wherein the metering system includes a meter rotor which rotates with said moter rotor and said pump rotor, and a stop pin for preventing rotation of said meter rotor after the amount of rotation of said motor rotor and said pump rotor. ### Claim 2 (depends on 1) The system as set forth in claim 1, wherein said fluid motor comprises a motor tube and said motor rotor to be driven by said motor fluid moving through said motor tube from said motor inlet to said motor outlet, and said pump including a pump tube and said pump rotor engaging said pump tube, with said pump rotor being driven to move said pump fluid through said pump tube as said motor rotor rotates. ### Claim 3 (depends on 1) The system as set forth in claim 1, wherein said metering system allowing a particular amount of rotation of said motor rotor and said pump rotor. ### Claim 4 (depends on 1) The system as set forth in claim 1, wherein said pump fluid is an acid and said motor fluid is water, and said container receives urine to be treated. ### Claim 5 (depends on 4) The system as set forth in claim 4, wherein said system is mounted on a spacecraft. ### Claim 6 (depends on 4) The system as set forth in claim 4, wherein said stop pin is biased in a direction towards said meter rotor, and said meter rotor being formed with a cam groove at an outer surface, and said stop pin being selectively movable outwardly of said cam groove to allow said metering rotor to rotate, with said stop pin being movable into said cam groove after a predetermined amount of rotation of said meter rotor, and said stop pin stopping rotation of said meter rotor after said precise amount of rotation of said motor rotor and said pump rotor. ### Claim 7 (depends on 6) The system as set forth in claim 6, wherein a spring biases said stop pin outwardly of a housing. ### Claim 8 (depends on 7) The system as set forth in claim 7, wherein said stop pin is movable away from said meter rotor by a mechanical trigger. ### Claim 9 (depends on 6) The system as set forth in claim 6, wherein a spring biases said stop pin outwardly of a housing. ### Claim 10 (depends on 9) The system as set forth in claim 9, wherein said stop pin is movable away from said meter rotor by a mechanical trigger. ### Claim 11 (depends on 9) The system as set forth in claim 9, wherein a control controls the selective movement of said stop pin outwardly of said cam groove. ### Claim 12 (depends on 11) The system as set forth in claim 11, wherein a solenoid is actuated by said control to move said stop pin against the bias force outwardly of said cam groove. ### Claim 13 (depends on 12) The system as set forth in claim 12, wherein said control receives a signal that a toilet has been flushed to actuate the solenoid. ### Claim 14 (depends on 4) The system as set forth in claim 4, wherein said stop pin is biased in a direction towards said meter rotor, and said meter rotor being formed with a cam groove at an outer surface, and said stop pin being selectively movable outwardly of said cam groove to allow said metering rotor to rotate, with said stop pin being movable into said cam groove after a predetermined amount of rotation of said meter rotor, and said stop pin stopping rotation of said meter rotor after said precise amount of rotation of said motor rotor and said pump rotor. ### Claim 15 (depends on 14) The system as set forth in claim 14, wherein a control controls the selective movement of said stop pin outwardly of said cam groove. ### Claim 16 (depends on 15) The system as set forth in claim 15, wherein said control receives a signal that a toilet has been flushed to actuate the solenoid. ### Claim 17 (depends on 15) The system as set forth in claim 15, wherein a solenoid is actuated by said control to move said stop pin against the bias force outwardly of said cam groove. ### Claim 18 (depends on 17) The system as set forth in claim 17, wherein said control receives a signal that a toilet has been flushed to actuate the solenoid.