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. 20, 1995
Filed:
Apr. 19, 1993
Joseph F Rando, Los Altos, CA (US);
Spectra-Physics Laserplane, Inc., Dayton, OH (US);
Abstract
A pipe alignment device and method is provided for efficiently generating an air flow in sections of pipe such that the sections of pipe may be aligned along a prepositioned reference laser beam without refraction errors. A fan blade assembly is supported in one end of the pipe section by a support frame. A motor, mounted on the frame, rotates the fan blade assembly through a plurality of intermeshed gears to generate a air flow in the pipe. The fan blade assembly defines a light transparent aperture which permits the reference laser beam to enter the pipe sections concomitantly with the generated air flow. The light transparent aperture may include a window disposed therein.