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:
Aug. 10, 1993
Filed:
Jan. 15, 1992
David W Somero, New Ipswich, NH (US);
Paul J Somero, New Ipswich, NH (US);
William W Niemela, Chassell, MI (US);
Philip J Quenzi, Atlantic Mine, MI (US);
Somero Enterprise, Inc., New Ipswich, NH (US);
Abstract
A deflection indicating adjustable highway straight-edge. The highway straight-edge is designed to effectively level wet concrete by allowing the user to determine when the device is not straight and provides the user with a means of controlled adjustment for straightening. In the preferred embodiment, a laser light beam and electronic sensing device is used to detect deflection of the straight-edge. Undesirable deflection can be eliminated through the external adjustment of steel tension cables inside the straight-edge tube. In an alternative embodiment of the invention, deflection is detected by means of an electrically conducting wire having contact points to indicate that the straight-edge requires adjustment. In another embodiment, a steel wire or string line stretched tightly inside the straight-edge tube indicates deflection requiring adjustment.