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:
Feb. 14, 1995
Filed:
Mar. 25, 1993
Ewald R Ulmer, Canton, SD (US);
Larry G Eben, Canton, SD (US);
CMI Corporation, Oklahoma City, OK (US);
Abstract
A pan drag device is disclosed for attachment to a concrete finishing machine movable longitudinally along an elongated body of poured concrete, with the finishing machine having a finishing unit engageable with the surface of the poured concrete and movable transversely across the body of concrete to grade the concrete. The pan drag device includes support members mounted to and extending rearwardly from the finishing unit and movable with the finishing unit and pan drag apparatus mounted to the support members for engaging the graded concrete surface to finish and seal the concrete surface. The pan drag device further includes a hydraulically actuated piston and cylinder member for raising and lowering the pan drag apparatus with respect to the concrete surface and apparatus for controlling the hydraulically actuated piston and cylinder member for raising and lowering the pan drag apparatus between an upward raised position to a downward engaging position to permit the pan drag apparatus to engage the graded concrete surface to seal and finish the concrete surface.