Title:
COMPOUND SPRING
Document Type and Number:
WIPO Patent Application WO/2010/038723
Kind Code:
A1
Abstract:
A compound spring (S1) is provided with an outer spring (O1) and an inner spring (I1) inserted on the inner side of the outer spring (O1) so as to be substantially coaxial with the outer spring (O1), and the outer and inner springs are coiled compression springs. The inner spring (I1) and the outer spring (O1) are wound in the same direction. With regard to the springs (O1, I1), at all times, the positions of portions of the element wire of the inner spring (I1), said portions constituting at least the effective winding portion of the inner spring (I1) are axially located between the pitches of the element wire of the outer spring (O1), and the outer peripheral edges of the portions are radially located on the outer side of the inner peripheral edges of the element wire of the outer spring (O1).
Inventors:
HONDA YOSHINORI (JP)
Application Number:
PCT/JP2009/066912
Publication Date:
April 08, 2010
Filing Date:
September 29, 2009
Export Citation:
Assignee:
TOGO SEISAKUSHO KK (JP)
HONDA YOSHINORI (JP)
HONDA YOSHINORI (JP)
International Classes:
F16F3/06
Foreign References:
| JPH11311296A | 1999-11-09 | |||
| JPS6323037A | 1988-01-30 | |||
| JPH08240244A | 1996-09-17 | |||
| JPS60143934U | 1985-09-24 |
Attorney, Agent or Firm:
GRANDOM PATENT LAW FIRM (JP)
Patent business corporation grandam patent firm (JP)
Patent business corporation grandam patent firm (JP)
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