Patent · US Expired

Electrostatic clutch

US4393967A · kind A · utility

4Cited by

8References

24Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Jerome J. Cuomo · Raleigh, US
Alfred J. Landon · Peekskill, US
Han C. Wang · Chappaqua, US

Key dates

Filing date	Oct 21, 1981
Grant date	Jul 19, 1983
Priority date	—
Expiry date	Oct 21, 2001

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB41J9/40
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An electrostatic clutch operable by the Johnsen-Rahbek effect, which may be used to operate, e.g., a print hammer device, is described, said clutch comprising a rotatable drum and a band engagable therewith, wherein the engagable surface of the drum is a semiconductive surface prepared by sputtering or vapor depositing a layer of substantially pure silicon carbide onto a conductive substrate.

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