Textiles: weaving – Warp manipulation – Shedding
Reexamination Certificate
2004-06-04
2009-08-25
Welch, Gary L. (Department: 3765)
Textiles: weaving
Warp manipulation
Shedding
Reexamination Certificate
active
07578316
ABSTRACT:
The heddle shaft rod (4) described originates in an extruded aluminum profile section with relatively thick side walls, which are removed in some regions and thereby made thinner. This can be done without substantial impairment to the rigidity of the heddle shaft rod, yet as a result a substantial reduction in weight is attained. The removal of material can be adapted to the local load conditions. For instance, it is possible at the ends or other force introduction points to leave unweakened thick walls, while the other regions of the side walls are milled off far enough that a uniform thinner wall thickness is attained. It is furthermore possible to vary the amount of material removed, either in multiple steps or in infinitely graduated fashion. The material removal pertains to a reduction in the wall thickness that is measured transversely to the movement direction of the heddle shaft rod. In addition, the profile section height of the heddle shaft rod can be varied, for instance by suitable milling off of the solid profile section region toward the ends, and this height is measured in the movement direction H.
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Fitch Even Tabin & Flannery
Groz-Beckert KG
Kunitz Norman N.
Sutton Andrew W
Welch Gary L.
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