Air cleaning assembly including a fastening assembly having a novel wing nut construction
US4482368A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 28, 1983 |
| Grant date | Nov 13, 1984 |
| Priority date | — |
| Expiry date | Feb 28, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S411/903
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improved fastening assembly having application for securing a filter element within an air cleaner and incorporating a novel wing nut construction. As used with an air cleaner, the wing nut is engaged with a large diameter threaded portion of a connecting bolt and acts to secure a filter element within an air cleaner housing, while an outer knob is engaged with a smaller diameter threaded section of the bolt and bears against a cover to secure the cover to a housing. The wing nut is provided with an inner threaded metal section which is molded within an outer plastic wing section. The inner nut portion includes a plastic ring having an inner diameter slightly less than the thread on the nut and serves to seal against the thread on the bolt and prevent leakage of air along the threaded connection, as well as preventing the loosening of the threaded connection due to vibration. In addition, the nut is provided with an enlarged base, which bears against the cap, and a cylindrical shank that projects through the opening in the cap and prevents direct contact between the threaded bolt and the cap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.