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US 6,543,331 B1Granted
Hydraulic lifting device
OwnerDavid Zingerman Zingermaninventor
Life of this patent
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Abstract
A hydraulic lifting device provides a lifting of the massive objects, having a complex geometric form and includes a support plate rigidly connected to the plungers coupled with the body carrying a main plunger, comprising a main rod and a main hydraulic fluid cavity, a main, auxiliary and central hydraulic fluid channels, a main valve and valve, and wherein each plunger comprises a road and hydraulic cavity.
Claims1
A hydraulic lifting device including
- at least three of a plurality of plungers, each of which is rigidly connected to a support base of said hydraulic lifting device, and wherein said each of said plurality of plungers comprises a hydraulic fluid cavity and a rod;
- a body coupled with said each of said plurality of plungers, and wherein said body comprises a main plunger, including a main hydraulic fluid cavity and a main rod;
- a main hydraulic fluid channel, coupling said main hydraulic fluid cavity with a main valve;
- an auxiliary hydraulic fluid channel, wherein each of the hydraulic fluid cavities is coupled each to the other and with a valve;
- a central hydraulic fluid channel, coupling said main valve and said valve, and
- a hydraulic fluid drain connected to said auxiliary hydraulic fluid channel.
3 more elements
Dependencies are inferred from the claim text.