Bellows pump
US5165866A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 3, 1991 |
| Grant date | Nov 24, 1992 |
| Priority date | — |
| Expiry date | Dec 3, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B43/08
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a bellows pump, a bellows is vertically located and has an upper and a lower end sections. The upper end section is inserted in a mounting through hole of an upper frame portion. It is detachably mounted in the frame portion by engagement between projections and communicates with a pump head. The lower end section is detachably mounted by engagement between projections in an upper connecting end portion of a reciprocating member. A torque from a motor is received by a motion conversion mechanism including an eccentric cam member and a reciprocating member, and causes elongation and contraction of the bellows in vertical direction. A motor shaft is loosely engaged with the eccentric cam member, which is supported by a pin shaft and extends along a horizontal axis of the motor shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.