Title:
WORK SUPPORT
Document Type and Number:
WIPO Patent Application WO/2003/033201
Kind Code:
A1
Abstract:
A work support having an improved reliability of operation and an improved durability. A work support (1) comprises a rod (4), a sleeve body (10), a case member (3), a scraper (14), an outer circumferential side hydraulic chamber (22) and oil passages (34, 35, 36). The work support (1) further comprises an air passage (28) formed between the rod (4) and the inner circumference of the sleeve body (10) and communicating with a small clearance between the rod (4) and the scraper (14), and an air input port (18) for feeding compressed air (50) to the air passage (28). When the rod (4) is returning, the compressed air (50) is fed from the air input port (18) to the air passage (28) and is ejected from the small clearance between the rod (4) and the scraper (14).
Inventors:
KAWAKAMI TAKAYUKI (JP)
Application Number:
PCT/JP2001/009049
Publication Date:
April 24, 2003
Filing Date:
October 15, 2001
Export Citation:
Assignee:
PASCAL KK (JP)
KAWAKAMI TAKAYUKI (JP)
KAWAKAMI TAKAYUKI (JP)
International Classes:
B23Q3/02; B23Q3/10; B23Q3/18; B23Q11/00; B23Q11/08; C25D1/02; F15B15/14; F15B15/26; (IPC1-7): B23Q3/10; F15B15/14; F15B15/26
Foreign References:
US5957443A | 1999-09-28 | |||
US4934672A | 1990-06-19 | |||
JP2001271809A | 2001-10-05 | |||
JP2000240611A | 2000-09-05 | |||
JPS53150397U | 1978-11-27 | |||
JPS5644884Y2 | 1981-10-21 |
Other References:
See also references of EP 1445062A4
Attorney, Agent or Firm:
Okamura, Toshio (Nishitenma 4-chome Kita-ku Osaka-shi, Osaka, JP)
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