The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jan. 17, 1978

Filed:

Aug. 30, 1976
Applicant:
Inventor:

Vladimir Svaty, Liberec, CS;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D03D / ; D03D / ;
U.S. Cl.
CPC ...
139438 ; 139144 ;
Abstract

Facilities for controllingly reciprocating a hydraulically-actuated piston coupled to a gripper shuttle are described. A first hydraulic fluid reservoir and the cylinder housing the shuttle-engaging piston are disposed in a unitary, substantially closed housing pivotally supported on a rotatable shaft of the loom. Piston-actuating fluid is cyclically introduced rearwardly of the piston into an elastomeric reservoir disposed behind and coupled to a perforated rear wall of the cylinder. Fluid from the first reservoir in the housing is periodically transferred into the second reservoir to launch the shuttle. To effect the return stroke of the piston, fluid from the first reservoir is transferred to the front end of the cylinder in timed relation to the fluid transfer to the second reservoir. Facilities are provided for controllably removing fluid from the second reservoir prior to the return stroke of the piston, and for abruptly removing hydraulic fluid from the front end of the cylinder prior to the launching stroke of the piston.


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Svaty, Vladimir. (1978). Technique for controllably reciprocating the weft insertion portion of a (U.S. Patent No. 4068686). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4068686

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