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:
Jul. 14, 1992
Filed:
Mar. 01, 1991
Eric P Austin, Sandbach, GB;
Robert W Harper, Stoke-on-Trent, GB;
Simon-Hartley Limited, Stoke-on-Trent, GB;
Abstract
A penstock or sluice gate door constructed by providing a stack of steel tubes (11) preferably of rectangular cross-section, which are stitch welded together at (12). There are added welded side plates (13), a central stainless steel spindle (14) and bolts (18) for lifting equipment, and the so-formed panel is placed in a mould and encapsulated with an impervious material. If desired side and bottom sealing strips (22, 23, 21) may be integrally formed during encapsulation. The resultant door is lightweight and non-corrodible, and its strength is determined by the wall thickness of the tubes (11) which will be selected accordingly.