B - Operations – Transporting – 65 – D
Patent
B - Operations, Transporting
65
D
B65D 83/14 (2006.01) G05D 7/01 (2006.01)
Patent
CA 2044620
ABSTRACT OF THE DISCLOSURE The lift valve comprises a body (1) in which is formed a cylindrical chamber (2) provided with a lateral inlet (14) and with an outlet (3). This chamber contains a piston (4) on which acts a spring (22) and which is solidly fixed to a rod (6) whose end constitutes a valve seal. The rod (6) is further provided with a cross- section reducer (9) formed, for example, by a perforated cylindrical bearing surface. The inlet aperture (14) opens out between the piston (4) and the cross-section reducer (9). The difference between the forces acting on the piston and on the cross-section reducer causes the piston to retract, thus opening the lift valve. The cross-section reducer seals the inlet aperture (14) to a greater or lesser extent.
Comment Paul
Marks & Clerk
LandOfFree
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