Title:
DUST COVER
Document Type and Number:
WIPO Patent Application WO/2015/037272
Kind Code:
A1
Abstract:
Provided is a dust cover having a novel structure in which smooth contractile deformation of a bellows tube is achieved while the number of main troughs is reduced and the length during contraction is reduced. A dust cover (10) having a bellows tube (12) in which a plurality of main troughs (14) as concavities are provided in joined fashion in an outer peripheral side, wherein the main troughs (14) are provided with one group of inclined walls (16, 16) that are inclined axially outward as the walls progress to the outer periphery, and the angles of inclination (β) of outer peripheral portions (60) of the inclined walls (16) are less than the angles of inclination (α) of inner peripheral portions (58) (α > β).
Inventors:
MATSUMURA HIROYUKI (JP)
Application Number:
PCT/JP2014/062590
Publication Date:
March 19, 2015
Filing Date:
May 12, 2014
Export Citation:
Assignee:
SUMITOMO RIKO CO LTD (JP)
International Classes:
F16J3/04; F16F9/38
Domestic Patent References:
| WO2013072958A1 | 2013-05-23 | |||
| WO2009157567A1 | 2009-12-30 |
Foreign References:
| JP2003004084A | 2003-01-08 |
Attorney, Agent or Firm:
KASAI, Yoshitaka et al. (JP)
Yoshitaka Kasai (JP)
Yoshitaka Kasai (JP)
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