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Patent Searching and Data


Title:
COMPOUND CONSTANT VELOCITY UNIVERSAL JOINT
Document Type and Number:
WIPO Patent Application WO/2007/049512
Kind Code:
A1
Abstract:
Problems of a double cardan joint such as workability in greasing and lubrication characteristics are solved by a constant velocity universal joint of a compound form. The compound constant velocity universal joint has two constant velocity universal joints each having a circular tube-like outer ring (1) having axially extending guide grooves (1b) formed in its spherical inner peripheral surface; an inner ring (2) having axially extending guide grooves (2b) in its outer peripheral surface; torque transmission balls (4) singly placed in ball tracks formed by cooperation of the guide grooves (1b) of the outer ring (1) and the guide grooves (2b) of the inner ring (2); and a retainer (5) for retaining the balls (4). The outer rings (1) are coaxially integrally joined back-to-back, and the gap between the outer peripheral surface on the opening side of each outer ring (1) and the shaft (3, 10) connected to each inner ring (2) is covered with a boot (8) with a metal ring.

Inventors:
SAKAGUCHI, Akio (1578 Higashikaizuk, Iwata-shi Shizuoka 37, 4380037, JP)
坂口 明夫 (〒37 静岡県磐田市東貝塚1578番地 NTN株式会社内 Shizuoka, 4380037, JP)
Application Number:
JP2006/320932
Publication Date:
May 03, 2007
Filing Date:
October 20, 2006
Export Citation:
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Assignee:
NTN CORPORATION (3-17, Kyomachibori 1-chome Nishi-k, Osaka-shi Osaka 03, 5500003, JP)
NTN株式会社 (〒03 大阪府大阪市西区京町堀1丁目3番17号 Osaka, 5500003, JP)
SAKAGUCHI, Akio (1578 Higashikaizuk, Iwata-shi Shizuoka 37, 4380037, JP)
International Classes:
F16D3/84; F16D3/20; F16D3/2245; F16J3/04; F16J15/52
Foreign References:
JPH07269585A1995-10-17
JPH11159538A1999-06-15
JP2004162882A2004-06-10
US3017775A1962-01-23
DE2949714A11981-06-25
Other References:
See also references of EP 1942285A4
Attorney, Agent or Firm:
EHARA, Syogo et al. (Ehara Patent Office, 15-26 Edobori 1-chome, Nishi-k, Osaka-shi Osaka 02, 5500002, JP)
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