Title:
AN ELECTRIC PRESSURE EXECUTIVE SUPPORTING METHOD AND A PRECISION ELECTRIC SUPPORTING CYLINDER
Document Type and Number:
WIPO Patent Application WO/2008/141483
Kind Code:
A1
Abstract:
An electric pressure executive supporting method and a precision electric supporting
cylinder are disclosed. Its supporting cylinder body (6) is of hollow cavity
configuration, said cavity divided into upper and lower sections in which there
are disposed an up-and-down movable supporting bar (1) and an electric lifter,
respectively. There is a stroke gap between said supporting bar (1) and said electric
lifter. Switch contacts (2) are disposed on both ends of said stroke gap, i.e.
a bottom of the supporting bar (1) and a top of the electric lifter, which form control
circuit switch of electric lifter. A clearance between the switch contacts (2)
is changed as relative movement of the supporting bar (1) and the electric lifter
until they are contacting with each other and the control circuit of the electric
lifter is turned on such that the electric lifter is stopped, thereby carrying
out support.
Inventors:
JIANG YU (CN)
Application Number:
PCT/CN2007/001763
Publication Date:
November 27, 2008
Filing Date:
June 04, 2007
Export Citation:
Assignee:
JIANG YU (CN)
International Classes:
B66F3/44; F16H25/20; G05D3/10
Foreign References:
| EP0007592A1 | 1980-02-06 | |||
| CN2766276Y | 2006-03-22 | |||
| CN2315706Y | 1999-04-21 | |||
| CN2626723Y | 2004-07-21 | |||
| CN1074820C | 2001-11-14 | |||
| CN2791108Y | 2006-06-28 | |||
| US5775469A | 1998-07-07 | |||
| US4817977A | 1989-04-04 |
Attorney, Agent or Firm:
JILIN CHANGCHUN NEW CENTURY PATENT CO. LTD (ChangChun, Jilin 2, CN)
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