Patent US1889522A successfully refreshed from Google Patents.
US4515535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Peristaltic pump quick disconnect rotor assembly
Assignee: Baxter International Inc
•
Filing: 1983-08-15
•
Granted: 1985-05-07
•
Expires: 2003-08-15
Abstract
Abstract The present invention provides an uncomplicated quick disconnect rotor assembly for peristaltic pumps. The assembly includes a magnetic carrier mounted on the pump drive shaft which has a mating configuration with a recess in the rotor. The rotor includes at least one magnet, preferably with segments on opposite sides of an axial drive shaft alignment passageway. The carrier and rotor are assembled and held in operation only with the magnetic force therebetween, which eliminates tools and mechanical moving parts from the assembly.
Inventors
- 👤 Edmund D. D'Silva
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:59
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/12; F04B43/1253; Y; Y10; Y10S; Y10S403/00; Y10S403/01
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
169 words
An improved quick disconnect rotor assembly for peristaltic pumps, comprising: a carrier having a first configuration and being attachable to a pump drive shaft, said carrier being formed with first magnetic means; and a rotor having means defining a second configuration which mates with said first configuration when said carrier and said rotor are mounted together in either a first orientation or a second orientation spaced 180 degrees from said first orientation, said rotor mating means further having second magnetic means therein for magnetically coupling with said first magnetic means when said carrier and said rotor are mounted together in one of said first and second orientations, said second magnetic means including first and second magnets, each presenting a north magnetic pole, and third and fourth magnets, each presenting a south magnetic pole, said magnets being equally radially spaced from the center of said rotor mating means with said first magnet diametrically oppositely spaced from said second magnet and said third magnet diametrically oppositely spaced from said fourth magnet.
Claim 2
Dependent Claim
169 words
An improved quick disconnect rotor assembly for peristaltic pumps, comprising: a carrier having a first configuration and being attachable to a pump drive shaft, said carrier being formed with first magnetic means; and a rotor having means defining a second configuration which mates with said first configuration when said carrier and said rotor are mounted together in either a first orientation or a second orientation spaced 180 degrees from said first orientation, said rotor mating means further having second magnetic means therein for magnetically coupling with said first magnetic means when said carrier and said rotor are mounted together in one of said first and second orientations, said second magnetic means including first and second magnets, each presenting a north magnetic pole, and third and fourth magnets, each presenting a south magnetic pole, said magnets being equally radially spaced from the center of said rotor mating means with said first magnet diametrically oppositely spaced from said second magnet and said third magnet diametrically oppositely spaced from said fourth magnet.
Claim 3
Dependent Claim
43 words
The assembly as claimed in claim 1 wherein: said rotor mating means include a recess having said second configuration adapted to closely engage said carrier first configuration when said carrier and rotor are mounted together in one of said first and second orientations.
Claim 4
Dependent Claim
21 words
The assembly as claimed in claim 1 wherein: said carrier includes an axial passageway adapted to fit over said drive shaft.
References Cited (Backward Citations)
US2750828A
Cited
US2630036A
Cited
US2718806A
Cited
US2912249A
Cited
US3502034A
Cited
US3644061A
Cited
US3622252A
Cited
US3970407A
Cited
US4195542A
Cited
US4350646A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-05-06 | 1988-11-05 | 1989-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-06 | 1992-11-05 | 1993-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-06 | 1996-11-05 | 1997-05-07 | $7700.00 | Window Closed / Lapsed |