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. 21, 1989
Filed:
May. 16, 1988
Oege R Offringa, Hardenberg, NL;
Hendrik Waterink, Marienberg, NL;
Geert J Pertien, Hardenberg, NL;
Jan T Brinke, Berentheim, NL;
Wavin, Zwolle, NL;
Abstract
A flange made of fiber-reinforced thermosetting synthetic resin comprises at least one flange section extending in an axial direction, which is fitted, or can be fitted, on a tubular part to be provided with a flange. The flange section joins the inside face of the flange which, together with an outside face of the flange, defines the flange. The flange has several fibre-reinforcement layers laid around each other and extending in an axial direction, and which are spirally wound up. The flange section extending in the axial direction also consists of fibre-reinforcement layers and thermosetting synthetic resin. In the region of the angular intersection between the inside face of the flange and the flange section extending in the axial direction, there is situated a reinforcement layer which prevents crack formation and which extends from the inside face of the flange to the flange section extending in the axial direction. The reinforcement layer may be formed by a disc-shaped fibre-reinforcement layer having a central opening or may consists of a layer of spun roving.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile