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Patent EP0544527A1 successfully refreshed from Google Patents.
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EP0544527A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Warp control apparatus for a loom

Assignee: Wac Data Service Co Ltd
•
Filing: 1992-11-26
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Granted: —
•
Expires: 2012-11-26
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Abstract

Abstract A warp control apparatus for a loom having a control rod retention device (4, 9, 11, 15) for selective engagement and retention of an end portion of a reciprocating control rod (14), in which said control rod retention device includes a finger (9) provided with a hook portion (91) or an aperture which can be selectively brought into engagement with the end portion of said control rod (14) to retain it and a piezo-electric body (2) having a piezo-electric element (200, 210). One end portion of the piezo-electric body (2) is movably supported on the control rod retention device (4) and the other end portion thereof is movably connected to the finger (9), and an intermediate portion between the one end portion of said piezo-electric body and the other end portion thereof is fixed to a rotatable member (16) rotatably mounted on the control rod retention device (15). This provides a device which is high in response speed, small in size, low in power consumption, prolonged in lifetime and only requires a low applied voltage.

Inventors

  • 👤 Chiharu Watanabe
  • 👤 Sadao Saito

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-09 19:42
CPC Classifications
D; D03; D03C; D03C3/00; D03C3/20; D03D; D03D49/00; D03D49/04

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 149 words
A warp control apparatus for a loom having a control rod retention device (11, 15) for selective engagement and retention of an end portion of a reciprocating control rod (14), characterised in that said control rod retention device comprises a finger (9) provided with a hook portion (91) or an aperture which can be selectively brought into engagement with the end portion of said control rod (14) to retain it and a piezo-electric body (2) having a piezo-electric element, one end portion (3A) of said piezo-electric body (2) is movably supported on said control rod retention device and the other end portion (8) thereof is movably connected to said finger (9), and an intermediate portion between the one end portion (3A) of said piezo-electric body (2) and the other end portion (8) thereof is fixed to a rotatable member (16) rotatably mounted on said control rod retention device (15).
Claim 2
Dependent Claim 57 words
A warp control apparatus for a loom according to claim 1, in which a cylindrical member (3A) is attached to the one end portion of said piezo-electric body (2) and recessed in a groove of an offsetter (16) to movably support the one end portion of said piezo-electric body (12) on said control rod retention device (4).
Claim 3
Dependent Claim 65 words
A warp control apparatus for a loom according to claim 2, in which a cylindrical member (8) is attached to the other end portion of said piezo-electric body (2) and inserted into an end portion (90) opposite to the hook portion (91) or the aperture of said finger (9) to movably connect the other end portion of said piezo-electric body (2) to said finger (9).

References Cited (Backward Citations)

DE3705738A1 Cited
DE3933149A1 Cited

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