Piston drive assembly
US4019395A · kind A · utility
0Cited by
13References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 7, 1975 |
| Grant date | Apr 26, 1977 |
| Priority date | — |
| Expiry date | Jul 7, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/18248
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Apparatus is disclosed for translating rotary motion into reciprocating motion, of the type utilized in piston operated pumps. The apparatus includes a crank shaft having one or more axially offset diameter segments, each segment having a block bearing partially encircling it, and the block bearing having a raised shoulder for mating with a piston surface groove. The piston is spring biased so as to hold the assembly comprising the piston, block bearing, and offset diameter segment together in a unitary assembly, so that rotation of the shaft causes the piston to reciprocate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.