Title:
JACK DEVICE
Document Type and Number:
Japanese Patent JP3671160
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To precisely elevate a heavy load by simple constitution.
SOLUTION: A movable member 3 formed integrally with a claw part 27 inserted into the heavy load, and a frame part 20 provided with an upper rod 22 for supporting the heavy load is assembled elevatably to a base member 2, and a driving member 4 comprising a small hydraulic elevator of which the piston rod 47 ascends and descends by advancing or retreating a plunger rod 55 screwingly is equipped detachably inside the frame part 20 of the movable member 3. In this jack device 1, the piston rod 47 is finely adjusted to be elevated because the plunger rod 66 is advanced or retreated screwedly by a distance corresponding to a lead of a male screw 77 in one rotation of an operation part 76. The heavy load is elevated precisely to thereby attain sure working, at centering work, level adjusting work and the like in various kinds of works.
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Inventors:
Yasuo Wada
Takaaki Shibamoto
Shuji Ota
Takaaki Shibamoto
Shuji Ota
Application Number:
JP2001181738A
Publication Date:
July 13, 2005
Filing Date:
June 15, 2001
Export Citation:
Assignee:
Elephant Chain Block Co., Ltd.
International Classes:
E01B29/04; B66F3/24; E01D21/00; (IPC1-7): B66F3/24; E01B29/04
Domestic Patent References:
| JP8192997A | ||||
| JP24012811Y1 |
Attorney, Agent or Firm:
Hiroyuki Okamoto
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