Particle grinder with high degree of sound isolation
US4371120A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 1980 |
| Grant date | Feb 1, 1983 |
| Priority date | — |
| Expiry date | Dec 3, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S241/30
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A particle grinder includes a container having at least one opening in a wall thereof; a sound isolation layer covers a major portion of the exterior surface of the container and an elogated fastening device passes through the opening, fastening the sound isolation layer to the container. The fastening device includes a bolt and a nut threadable onto the bolt. A first sleeve composed of substantially non-deformable material surrounds the elongated fastening device at least partially within a region of the opening, and a second and resilient sleeve surrounds the first sleeve, at least partially and normally projects exteriorly therebeyond. A clearance exists normally between the sleeves and the sound isolation layer abuts an exterior portion of the second sleeve. A resilient seal is disposed around the periphery of a portion of the fastening device, and between the first sleeve, and the container. An elastic washer is disposed between the sleeve, and an outer portion of the fastening device, which outer portion is arranged to axially abut against the elastic washer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.