B - Operations – Transporting – 25 – B
Patent
B - Operations, Transporting
25
B
B25B 19/00 (2006.01) B25B 21/02 (2006.01)
Patent
CA 2233073
An impulse tool (10) including an impulse generator (19, 119) utilizes an enhanced seal to reduce leakage of hydraulic fluid. The annular clearance in the pressure plate (24, 124) is sealed around the spindle (30, 130) with a resilient seal (38, 138). A primary passage (40, 140) through the pressure plate is provided to compensate for expansion of the fluid. The use of the primary passage (40, 140), which is not susceptible to enlargement due to wear, minimizes pressure peaks in the accumulator reservoir (42, 142), and results in less leakage.
L'invention a trait à un outil à impulsions (10), comportant un générateur d'impulsions (19, 119), qui fait intervenir un joint amélioré afin de réduire les fuites de fluide hydraulique. Un joint élastique (38, 138) permet d'obturer hermétiquement, autour de l'axe de rotation (30, 130), l'espacement annulaire par rapport à la plaque de pression (24, 124) tandis qu'un passage primaire (40, 140) est ménagé à travers la plaque de pression pour compenser la dilatation du fluide. L'utilisation de ce passage primaire (40, 140), lequel ne risque pas de s'élargir par suite d'usure, réduit à leur minimum les crêtes de pression dans le réservoir d'accumulation (42, 142), ce qui permet de réduire les fuites.
Biek Paul Albert
Kachich Albert John
Cooper Technologies Company
Deeth Williams Wall Llp
Gpx Corp.
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