Fluid conduit-responsively adjustable pump arrangement and pump/conduit arrangement and method, and fluid conduits therefor
US4976590A · kind A · utility
Inventor
Key dates
| Filing date | Jun 8, 1988 |
| Grant date | Dec 11, 1990 |
| Priority date | — |
| Expiry date | Jun 8, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B2205/13
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A rotary peristaltic pump arrangement and method, with a set of specially constructed tube set conduits interchangeably interconnectable in selectively responsively sensed and operationally affecting relationship with the pump. The pump is driven by a pulse-actuated stepping motor, and the total quantity of pulses fed to the pump for any selected volume from one of the conduits is controlled by and as a function of which one of the set of plural sizes of tube set conduits is connected to the pump. The control is automatically affected through actuation or nonactuation of at least one switch sensor on the pump by special anchor-connecting flanges on the tube set conduits which interchangeably mate in anchored connection with corresponding anchor-connection slots on the pump and adjacent one which the switch sensor is disposed. Inaccuracies in volume pumped for a given quantity of pulses applied to the pump to effect a selected desired volume are minimized by adjusting the total quantity of pulses applied to the pump for a given desired volume, and/or for subsequent selected volumes, if desired, as a function of the ratio of the given desired volume relative to actual volume pumped b…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.