Four roller peristaltic pump

Patent metadata

Field	Value
Publication number	US-2016017880-A1
Application number	US-201514799976-A
Country	US
Kind code	A1
Filing date	Jul 15, 2015
Priority date	Jul 17, 2014
Publication date	Jan 21, 2016
Grant date	—

Abstract

A peristaltic pump for supplying liquid color to a process machine, comprising a stepper motor including an output shaft, a drive roller mounted on the output shaft, and a collection of planetary rollers positioned about and frictionally contacting driven by the output shaft, for sequentially compressing a flexible tube carrying the liquid color thereby dispensing liquid color from the tube.

First claim

I claim the following:

1 . A peristaltic pump for supplying liquid color to a process machine, comprising:
a. a stepper motor; b. a plurality of rollers frictionally contactingly driven by the stepper motor, for compressing a tube carrying liquid color to dispense liquid color from the tube.

2 . A peristaltic pump, comprising:
a. a stepper motor; b. a plurality of manually actuated switches for entering numbers; c. a plurality of screens for displaying the manually entered numbers; d. a microprocessor using the manually entered numbers to regulate speed of the stepper motor to furnish liquid color at a preselected rate.

3 . The pump of claim 2 further comprising rollers, driven by the stepper motor, for squeezing a tube to output pumped liquid color.

4 . The pump of claim 3 wherein the rollers are frictionally driven by the stepper motor.

5 . The pump of claim 3 wherein the rollers are planetary rollers.

6 . The pump of claim 2 wherein the switches are pushbuttons.

7 . The pump of claim 2 wherein the switches are thumbwheels.

8 . The pump of claim 6 wherein the thumbwheels are digital thumbwheels.

9 . The pump of claim 2 wherein the numbers are (i) output rate in pounds per hour of a process machine receiving the pumped liquid color; (ii) percentage by weight of the pumped liquid color to be used by the process machine; and (iii) density of the liquid color.

10 . A peristaltic pump for supplying liquid color to a process machine, comprising:
a. a stepper motor; b. a pump head having a groove therein for receiving a liquid color tube; c. a plurality of rollers frictionally driven by the stepper motor, for compressing the tube carrying liquid color while in the groove to dispense liquid color from the tube.

11 . The pump of claim 10 wherein the pump head has upper and lower portions, the upper portion being movable vertically to expose the rollers for positioning of the tube thereon.

12 . The pump of claim 11 further comprising:
a. an on/off switch for controlling flow of electricity to the stepper motor;
b. a trip for moving the on/off switch to the “off” position whenever the pump head upper portion is raised.

13 . The pump of claim 11 wherein the rollers are planetary rollers.

14 . The pump of claim 12 wherein the rollers are planetary rollers.

15 . A peristaltic pump for supplying liquid color to a process machine, comprising:
a. a stepper motor frictionally driving planetary gears squeezing a tube to output pumped liquid color; b. a plurality of switches for manually entering (i) output rate in pounds per hour of product to be furnished by a process machine receiving the pumped liquid color; (ii) percentage by weight of the pumped liquid to be added to the materials to be consumed by the process machine in the course of producing the product; and (iii) density of the liquid color; c. a plurality of screens for displaying the manually entered data recited in claim element “b”; d. a microprocessor regulating speed of the stepper motor in response to the manually entered data to furnish a preselected amount of liquid color to be dispensed.

16 . The pump of claim 1 wherein the rollers are planetary rollers.

17 . A peristaltic pump for supplying liquid color to a process machine, comprising:
a. a stepper motor; b. a plurality of planetary rollers frictionally driven by the stepper motor, for compressing the tube carrying liquid color while in the groove to dispense liquid color from the tube.

Assignees

• Maguire Stephen B

Inventors

• Maguire Stephen B

Classifications

• F04B43/1253 Primary

  by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing · CPC title

• F04B43/1261

  the rollers being placed at the outside of the tubular flexible member · CPC title

• F04B49/06

  Control using electricity (regulating by means of floats actuating electric switches F04B49/04) · CPC title

• F04B17/03

  driven by electric motors · CPC title

• F04B13/00 Primary

  Pumps specially modified to deliver fixed or variable measured quantities · CPC title