Reversible gear oscillating sprinkler
US4718605A · kind A · utility
65Cited by
5References
12Claims
0Family size
Inventor
Key dates
| Filing date | Sep 19, 1986 |
| Grant date | Jan 12, 1988 |
| Priority date | — |
| Expiry date | Sep 19, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/18864
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A gear driven oscillating sprinkler head includes a reversible gear train for transmitting drive from a drive motor to the oscillating sprinkler head with a shifting mechanism, including a shiftable carrier on which a pair of driving pinions are mounted for shifting alternately into driving engagement with an internal ring gear, with a lost motion connection between a shifting arm and the carrier with separate over-center spring units for separately biasing the carrier and shifting arm to the alternate driving engagement positions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.