A - Human Necessities – 22 – C
Patent
A - Human Necessities
22
C
A22C 17/02 (2006.01)
Patent
CA 2617515
A dehider (10) includes a pneumatic motor (24) driving a pair of disk blades (12) in opposed cutting oscillations and a governor that controls the speed of the motor (24). Governor balls (122), acting as centrifugal weights, spin with the motor (24) and push against an inclined flange (120) on a valve head (108) to move the valve head (108) towards a valve seat (106). The motion of the valve head (108) compresses a biasing spring (112) and restricts the flow of pressurized air as the desired speed is exceeded. As speed decreases, centrifugal force decreases and the biasing spring (112) opens the valve to provide additional power to the motor (24). The disk blades (12) are provided with a cylindrical central lip that substantially increases the area of the central bearing that the blades (12) turn on and produces significantly longer blade life.
L'invention concerne un dépouilleur comprenant un moteur pneumatique entraînant une paire de lames circulaires selon des oscillations de coupe opposées, et un régulateur qui commande la vitesse du moteur. Les billes du régulateur, qui servent de poids centrifuges, tournent avec le moteur et exercent une pression sur un bord incliné d'une tête de soupape pour déplacer la tête de soupape vers le siège de soupape. Le mouvement de la tête de soupape comprime un ressort de sollicitation et restreint l'écoulement d'air sous pression en cas de dépassement de la vitesse voulue. Lorsque la vitesse diminue, la force centrifuge diminue, et le ressort de sollicitation ouvre la soupape pour fournir plus de puissance au moteur. Les lames circulaires comportent une languette cylindrique centrale qui augmente sensiblement la zone du palier central sur lequel les lames tournent, et accroît significativement la durée de service des lames.
Jarvis Products Corporation
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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