High pressure valve
US3976279A · kind A · utility
16Cited by
5References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 5, 1973 |
| Grant date | Aug 24, 1976 |
| Priority date | — |
| Expiry date | Nov 5, 1993 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/508
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A valve is disclosed that has an upper stem and a lower stem that are received in a gland and connected together by a threaded connection. The gland has an axial slot and the lower valve stem has a diametrically extending pin that extends into the slot so that when the upper stem is rotated, the lower stem moves axially into engagement with a valve seat thereby eliminating a rotation of the lower stem which insures against the stem rotating on the valve seat and prevents galling and reduces backlash between the upper stem and the lower stem to being almost non-existent without requiring periodic adjustment to compensate for wear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.