Fluid seal

A seal construction for a pneumatic valve (66) reduces resistance to movement of a stem (76) which directs flow through the valve. The seals (78) (108) are generally "v" shaped in cross section. The seals include heel portions (86) (110) which are supported on supporting surfaces (80) (112...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	KAVANAUGH, MARK A, FRANSON, DAVID C, SNEAD, WALLACE K
Format:	Patent
Sprache:	eng
Schlagworte:	ACTUATING-FLOATS BLASTING COCKS CYLINDERS DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING PISTONS SEALINGS TAPS THERMAL INSULATION IN GENERAL VALVES WEAPONS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	A seal construction for a pneumatic valve (66) reduces resistance to movement of a stem (76) which directs flow through the valve. The seals (78) (108) are generally "v" shaped in cross section. The seals include heel portions (86) (110) which are supported on supporting surfaces (80) (112). The seals include first lip portions (92) (122) that extend from the heel portions to a surface that is moveable relative to the seal. Second lip portions (98) (128) extend from the heel portion to surfaces that are stationary relative to the seal. Spaces (104) (134) between radially extending projections (102) (132) and spaces (90) (120) between axially extending projections (88) (118) enable fluid entering pressure relief areas (106) (136) to escape to atmosphere. The seal construction avoids seal deformation that would otherwise increase resistance to stem movement.