Electronically powered apparatus for imparting vibratory forces on a tree
US4591748A · kind A · utility
5Cited by
11References
2Claims
0Family size
Inventor
Key dates
| Filing date | Apr 11, 1983 |
| Grant date | May 27, 1986 |
| Priority date | — |
| Expiry date | Apr 11, 2003 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47G33/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A tree vibrator (8) includes an electric motor (14) disposed within a housing (15) mounted on tree (10) by band clamp (18). An adjustable eccentric weight assembly (24) is mounted on the rotary output shaft (26) of motor (14) to impart vibrations of a desired intensity on tree (10). Motor (14) is powered by battery assembly (49) through an intermediate electronic power control circuit assembly (56) to intermittently energize motor (14), significantly extending the useful life of batteries (50) of assembly (49).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.