Corporation stop assembly
US5737822A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1995 |
| Grant date | Apr 14, 1998 |
| Priority date | — |
| Expiry date | Sep 26, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/4994
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A corporation stop for use with standard tapping equipment includes a threaded stem with an enlarged, conical head for forming a blind side seal. A resilient sleeve member coaxially surrounds a narrow portion of the stem, and a flat compression ring rests coaxially above the sleeve member and has a notch formed radially in its outer edge. A standard saddle having a radially-inward tab is placed on the external sidewall of the conduit about the opening and receives the compression ring, the tab engaging the notch in the compression ring. A clamp nut is engaged with the threaded stem, forcing the compression ring against the resilient sleeve member to forcibly move the upper end of the sleeve member towards the compression ring to form an external seal between the compression ring and the external sidewall of the conduit and force the sleeve member over the enlarged, conical head of the threaded stem to form an internal seal within the lined conduit. The stem, saddle member and compression ring engage each other to prevent relative rotation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.