Thermal recording stylus
US4325071A · kind A · utility
2Cited by
3References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 15, 1980 |
| Grant date | Apr 13, 1982 |
| Priority date | — |
| Expiry date | Sep 15, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D15/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A thermal recording stylus comprised of a ceramic tip with two passages from openings near a frustum-shaped end to openings at the rear, an electrical heating element wrapped around the frustum-shaped end from one opening thereof to the other, and electrical power leads extending from the ends of the heating element through the passages. The leads and heating element are secured with cement in the passages, and the entire assembly is secured in a sleeve with cement and a ring wedged between a conical section of the ceramic tip and the sleeve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.