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.
Patent No.:
Date of Patent:
Jun. 28, 1977
Filed:
Dec. 18, 1975
Adrianus Henricus VAN Duynhoven, Deurne, NL;
Ruti-Te Strake B.V., Deurne, NL;
Abstract
A warp tension controller for a loom comprises a warp tension sensor for generating a first signal which is a measure of the warp tension, a source of a reference signal, and means for comparing said signals and producing an output signal representing deviation of said first signal from said reference signal. An operational amplifier has an inverting input connected to receive said output signal, and has an output connected to means for adjusting the warp tension. A feedback circuit connected between said input and said output of said amplifier comprises a resistor in parallel to an integrating capacitor. A voltage memory having an input connected to the output of said amplifier produces a sustained output voltage equal to the voltage applied to its input when the loom is running, and a switch during slower than normal operation of the loom connects a relatively small resistance between the input and the output of said amplifier, disconnects said capacitor from the output of said amplifier and connects it to the output of said voltage memory, to apply to said capacitor a voltage equal to the voltage which existed at the output of said amplifier when the loom was running at its normal operating speed.