Master cylinder with improved piston guidance
US6581380B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 16, 2001 |
| Grant date | Jun 24, 2003 |
| Priority date | — |
| Expiry date | Jul 16, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2025/081
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A master cylinder formed of a forward plastic part snapingly secured to a rearward plastic part. The forward part has a tapered draft angle bore and the rearward part has a purely cylindrical bore aligned with the draft angle bore of the front part and conforming to the diameter of the piston of the cylinder. An annular groove is defined by the parts in surrounding relation to the aligned bores and an annular bearing, having a true cylindrical inner surface corresponding to the diameter of the piston, is positioned in the groove to guide the front end of the piston as the piston moves forwardly into the tapered bore of the forward part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.