Title:
【発明の名称】ポケットコイルばねの製造方法およびその装置
Document Type and Number:
Japanese Patent JP3416852
Kind Code:
B2
Abstract:
Improvements to a method and apparatus are disclosed for making a series of coil springs pocketed within individual pockets in an elongate fabric strip comprised of two overlying plies capable of being welded together. Improvements include improvements to fabric tracking and folding, fabric handling along the fabric path, and various direct-drive configuration eliminating the need for pneumatic cylinders.
Inventors:
Lathron John Smith
Application Number:
JP32159891A
Publication Date:
June 16, 2003
Filing Date:
December 05, 1991
Export Citation:
Assignee:
DREAMWELL, LTD.
International Classes:
A47C27/06; B21F33/00; B23P19/04; B68G9/00; (IPC1-7): B21F33/00
Domestic Patent References:
| JP6313685B2 | ||||
| JP429519B1 | ||||
| JP3820766B1 | ||||
| JP5757875Y2 | ||||
| JP243280Y2 | ||||
| JP5500913A |
Other References:
【文献】米国特許4439977(US,A)
Attorney, Agent or Firm:
Muneharu Sasaki (3 outside)
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