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:
Sep. 28, 1976
Filed:
Dec. 27, 1974
Juha Antti Nelimarkka, Helsinki, SF;
Neles Oy, , SF;
Abstract
The flangeless valve is disposed between flange bolts of adjacent pipe flanges. The valve comprises a body which has two parts, a closing element rotatably mounted within the body and seat rings mounted in ring-shaped transverse grooves machined in both sides of the body. The valve body diameter is small enough so that the valve may be placed in the pipeline, between flange bolts of the pipe flanges. Most bolts do not contact the valve body and pass through holes in the pipe flanges; other fasteners are attached to a frame on the valve through the flanges thereby transmitting the bolt clamping force. One body construction can use a circumferential seal between the body halves in the body joint. Such seal ends at the shaft and a ring-shaped seal is located in a plane perpendicular to the circumferential seal and presses against its ends with a tightenable bushing.