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:
Mar. 05, 1991
Filed:
May. 10, 1990
Ilkka Eivola, Naantali, FI;
Valmet Paper Machinery Inc., , FI;
Abstract
A nozzle arrangement in a blow box of a paper machine, comprising one or several nozzles (22a, 22b) placed in connection with the blow box (20) or pipe, through which nozzles a blowing of air can be applied to a moving member in a paper machine placed in their proximity, such as a wire, drying cylinder, guide roll, felt, or the equivalent. The blow box (20) and its nozzles (20a, 20b) are at a certain operational safety distance (C) from the moving member. In connection with the nozzle slots of the nozzles (22a, 22b) or nozzle, a respective nozzle flap (24a, 24b) pivotable around a respective transverse hinge shaft (P) is hinged. The nozzle flaps (24a, 24b) respectively guide the blowing of air (F.sub.a, F.sub.b) to the desired object and if necessary maintain a required difference in pressure. The nozzle flaps (24a, 24b) are hinged in such a way that, in their normal operating position, the outer edge of the respective flap is at a distance considerably shorter than the required operational safety distance from the moving member (10, 12), but the nozzle flaps (24a, 24b) can pivot to the required safety distance when a paper clod or some other obstacle passes by.