Seal

US11927269B2 · kind B2 · utility

Assignee

• BLACK & DECKER INC. · US

Inventors

• Marek Turisin · Niedernhausen, DE
• Clemens DUENSER · Mainz, DE

Key dates

• Filing date: Aug 31, 2022
• Grant date: Mar 12, 2024
• Expiry date: Aug 31, 2042

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16K1/2263
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A seal for a butterfly valve includes an end cap with an outer tubular side wall surrounding an inner tubular side wall, both extending in the same direction providing a gap therebetween. At least the inner side wall is made from a resiliently deformable material. The end cap abuts a conduit entrance, and the inner and outer side walls extend therein, the outer side wall abutting an inner surface of the entrance of the conduit. A rotatable pivotal disk mounted inside the inner side wall within the entrance is rotatable between a position where the periphery of the disk engages the inner side wall to seal the entrance and a position where the disk is angled relative to the entrance, opening the entrance so a fluid may pass through the conduit. A butterfly valve assembly and a vacuum cleaner including the seal or the assembly are also disclosed.