Pneumatic jack

Details Pneumatic jack Pneumatic jack

B - Operations, Transporting

66

F

B66F 3/42 (2006.01) B66F 3/35 (2006.01)

Patent

CA 2248063

A relatively low profile pneumatic jack comprising a bellows made from a flexible member having at least one convolution for lifting heavy objects, such as vehicles. The bellows is located between a lift member that abuts the object to be lifted and a base member which abuts the surface from which the object is being lifted (i.e., the ground). A top plate and a bottom plate connect to the bellows and the lift and base members to form an air-tight chamber within the bellows. An inlet valve is connected to the chamber to allow the introduction of pressurized air in the chamber. A valve assembly having safety systems therein to prevent overfilling of the jack is disposed between the supply of pressurized air and the inlet valve. A safety system inside the chamber further prevents overfilling of the jack.

Vérin pneumatique à profil relativement bas comprenant un soufflet fabriqué d'un élément souple comportant au moins une circonvolution afin de lever des objets lourds, comme les véhicules. Le soufflet est situé entre un élément de levage qui jouxte l'objet à soulever et une base qui jouxte la surface à partir de laquelle l'objet est levé (c.-à-d., le sol). Une plaque supérieure et une plaque inférieure relient le soufflet et l'élément de levage et la base pour constituer une chambre étanche à l'air à l'intérieur du soufflet. Un robinet d'entrée d'air est relié à la chambre pour permettre l'introduction d'air sous pression. Un dispositif à robinets comportant des systèmes de sécurité afin d'empêcher le remplissage excessif du vérin se trouve entre l'alimentation en air sous pression et le robinet d'entrée d'air. Un système de sécurité dans la chambre empêche le remplissage excessif du vérin.

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