Comprehensive water treatment system
US5157979A · kind A · utility
18Cited by
11References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 24, 1991 |
| Grant date | Oct 27, 1992 |
| Priority date | — |
| Expiry date | Oct 24, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2107
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed is a novel helix drive for use with a valve assembly of a water softener. The helix drive comprises a stationary drive axle bearing a longitudinally slotted sleeve; a piston having an apertured end and being disposed within said drive axle sleeve; a transverse pin, having ends fitted with guide shoes, disposed through said piston aperture and located within said axle slot; and a drive gear having a pair of helix paths within said pin guide shoes are disposed. Rotation of said drive gear results in reciprocating longitudinal movement of the pin within the axle slot and, thus, the piston.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.