Seal ring having tapered surface and sealing device incorporating the same

US4212474A · kind A · utility

Inventor

• Yoshio Arai · Matsudo, JP

Key dates

• Filing date: May 31, 1979
• Grant date: Jul 15, 1980
• Expiry date: May 31, 1999

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16J15/34
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A seal ring with tapered surfaces is constituted by an inner ring, outer ring and a tightening resilient member. Each of the inner and outer rings is provided with an inner and outer peripheral surfaces and a pair of sealing end surfaces extending between the inner and outer peripheral surfaces. Each of the inner and outer ring is divided in the circumferential direction into two sections. The inner peripheral surface of the outer ring fits the outer peripheral surface of the inner ring, while the outer peripheral surface of the outer ring is surrounded by the resilient member so that the inner and outer rings are resiliently pressed radially inwardly. The end surfaces of the inner and outer rings are arranged flush to form common sealing surfaces. At least one of the common sealing surfaces thus formed constitutes a conical surface so that the axial distance between two common sealing surfaces is varied such that it increases toward the radially outer side. A sealing device is constituted by the seal ring with tapered surfaces having the above-stated construction, and annular surfaces to be sealed which are provided on two members adapted to rotate relatively to each other so as t…