Patent · US Expired

Shim-seal device in rotator assembly of toner hopper

US5642186A · kind A · utility

5Cited by
4References
28Claims
0Family size

Assignee

Inventors

Key dates

Filing dateDec 30, 1994
Grant dateJun 24, 1997
Priority date—
Expiry dateDec 30, 2014

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG03G15/0898
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

An improved gasket device for a bushing which drives a stir-rod has been developed for use in a toner hopper. In one embodiment, the improved gasket uses a crush-resistant material, such as velvet or felt, laminated on a resilient material such as foam tape. The crush-resistant material prevents permanent reduction in the thickness of the gasket by absorbing compressive forces. In a second embodiment, an incompressible shim, for example a steel or plastic shim spaces the felt gasket from the part of the bushing extending from the toner hopper. This tightens the attachment of the bushing to the toner hopper and keeps the felt gasket firmly against the wall of the toner hopper.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.