Discharge chute assembly for snowthrower
US5177888A · kind A · utility
19Cited by
25References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 14, 1991 |
| Grant date | Jan 12, 1993 |
| Priority date | — |
| Expiry date | May 14, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S16/19
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A discharge chute assembly (30) includes a chute (32) and a pivotal deflector (34), the overlapping end portions of which define a partial spherical or ball joint (40) which maintains a tight seal against backflow and leakage over the entire range of rotation and deflection of the assembly. The assembly (30) is preferably secured to a rotatable base (54) by means of lower pivots (70) and a releasable fastener (72) for collapsibility.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.