Roller control for a peristaltic pump construction

Claim 2

In a peristaltic pump construction in which a rotor carrying pressure rollers moves within a circular pressure wall, that improvement in a roller mount which comprises: a. a rotor having radial portions provided with axially spaced plate extensions each having a circular recess on a common center line, b. a roller to be mounted between said plate extensions, c. a pin for mounting said rollers having a first portion on a first center line to serve as a bearing mount for a roller, d. second portions on said pin on opposite sides of said first portion circular in cross-section and on a second center line spaced from said first center line to be in eccentric relation to a roller mounted on said first portion, said second portions being received respectively in said circular recesses in said spaced plate extensions, and e. means on one end of said pin having a portion pivotally mounted on an axis normal to said center lines and releasably engageable with one of said extensions and rotatable to control the rotative position of said pin and thus the radial position of a roller on said pin.

Claim 3

A device as defined in claim 1 in which said means comprises a cap having a base portion lying in contact with one side of said plate extension and mounted for limited rotation relative to said extension, means on said pin engaged with a portion of said base portion, and locking means on said cap movable to a locking position engaging said one side of said plate extension, and movable to a release position disengaged from said plate extension to permit rotation of said pin by movement of said cap to any selected position of adjustment within the limits of rotation of said base portion.

Claim 4

In a peristaltic pump construction in which a rotor carrying pressure rollers moves within a circular pressure wall, that improvement in a roller mount which comprises: a. a rotor having radial portions provided with axially spaced plate extensions each having a circular recess on a common center line. b. a roller to be mounted between said plate extensions, c. a pin for mounting said rollers having a first portion on a first center line to serve as a bearing mount for a roller, d. Second portions on said pin on opposite sides of said first portion circular in cross-section and on a second center line spaced from said first center line to be in eccentric relation to a roller mounted on said first portion, said second portions being received respectively in said circular recesses in said spaced plate extensions, e. means on one end of said pin releasably engageable with one of said extensions to control the rotative position of said pin and thus the radial position of a roller on said pin, said means comprising a cap having a base portion lying in contact with one side of said plate extension, f. means on said pin engaged with a portion of said base portion, g. locking means on said cap movable to a locking position engaging said one side of said plate extension, and movable to a release position disengaged from said plate extension to permit rotation of said pin to any selected position of adjustment, said means on said pin being engaged with a portion of said base portion and comprising an out-of-round extension passing through a similar out-of-round opening in said base, and h. a spring washer on said extension held in place by a fastener on said out-of-round extension, said locking means on said cap having a cam portion to contact said one side of said plate extension and compress said washer when in locking position.

Claim 5

In a peristaltic pump construction in which a rotor carrying pressure rollers moves within a circular pressure wall, that improvement in a roller mount which comprises: a. a rotor having radial portions provided with axially spaced plate extensions each having a circular recess on a common center line. b. a roller to be mounted between said plate extensions, c. a pin for mounting said rollers having a first portion on a first center line to serve as a bearing mount for a roller, d. Second portions on said pin on opposite sides of said first portion circular in cross-section and on a second center line spaced from said first center line to be in eccentric relation to a roller mounted on said first portion, said second portions being received respectively in said circular recesses in said spaced plate extensions, e. means on one end of said pin releasably engageable with one of said extensions to control the rotative position of said pin and thus the radial position of a roller on said pin, said means comprising a cap having a base portion lying in contact with one side of said plate extension, f. means on said pin engaged with a portion of said base portion, g. locking means on said cap movable to a locking position engaging said one side of said plate extension, and movable to a release position disengaged from said plate extension to permit rotation of said pin to any selected position of adjustment, said means on said pin being engaged with a portion of said base portion and comprising an out-of-round extension passing through a similar out-of-round opening in said base, and h. a spring washer on said extension held in place by a fastener on said out-of-round extension, said locking means on said cap having a cam portion to contact said one side of said plate extension and compress said washer when in locking position.

Claim 6

In a peristaltic pump construction in which a rotor carrying pressure rollers moves within a circular pressure wall, that improvement in a roller mount which comprises: a. a rotor having radial portions provided with axially spaced plate extensions each having a circular recess on a common center line, b. a roller to be mounted between said plate extensions, c. a pin for mounting said rollers having a first portion on a first center line to serve as a bearing mount for a roller, d. second portions on said pin on opposite sides of said first portion circular in cross-section and on a second center line spaced from said first center line to be in eccentric relation to a roller mounted on said first portion, said second portions being received respectively in said circular recesses in said spaced plate extensions, e. means on one end of said pin releasably engageable with one of said extensions to control the rotative position of said pin and thus the radial position of a roller on said pin, said means comprising a cap having a base portion lying in contact with one side of said plate extension, f. means on said pin engaged with a portion of said base portion, and g. locking means on said cap movable to a locking position engaging said one side of said plate extension, and movable to a release position disengaged from said plate extension to permit rotation of said pin to any selected position of adjustment, said cap comprising a circular disc having arcuate portions on either side of said base portion providing a diametrical slot above said base, said means on said cap movable to a locking position comprising a lever arm pivoted at one end of said slot having a cam portion to contact said one side of said plate extension in locked position.

Claim 7

In a peristaltic pump construction in which a rotor carrying pressure rollers moves within a circular pressure wall, that improvement in a roller mount which comprises: a. a rotor having radial portions provided with axially spaced plate extensions each having a circular recess on a common center line, b. a roller to be mounted between said plate extensions, c. a pin for mounting said rollers having a first portion on a first center line to serve as a bearing mount for a roller, d. second portions on said pin on opposite sides of said first portion circular in cross-section and on a second center line spaced from said first center line to be in eccentric relation to a roller mounted on said first portion, said second portions being received respectively in said circular recesses in said spaced plate extensions, e. means on one end of said pin releasably engageable with one of said extensions to control the rotative position of said pin and thus the radial position of a roller on said pin, said means comprising a cap having a base portion lying in contact with one side of said plate extension, f. means on said pin engaged with a portion of said base portion, and g. locking means on said cap movable to a locking position engaging said one side of said plate extension, and movable to a release position disengaged from said plate extension to permit rotation of said pin to any selected position of adjustment, said cap comprising a circular disc having arcuate portions on either side of said base portion providing a diametrical slot above said base, said means on said cap movable to a locking position comprising a lever arm pivoted at one end of said slot having a cam portion to contact said one side of said plate extension in locked position.

Claim 8

A device as defined in claim 3 in which said cap comprises a circular disc having arcuate portions on either side of said base portion providing a diametrical slot above said base, said locking means being movable into and out of said slot in respective locked and unlocked positions.

Claim 9

A device as defined in claim 5 in which said base portion has an arcuate slot and a pin on said plate extension to extend into said arcuate slot to limit the rotation of said cap.