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:
Dec. 27, 1988
Filed:
Oct. 22, 1987
Forrest A Shook, Fenton, MI (US);
Gerard J DeSantis, Battle Creek, MI (US);
NLB, Wixom, MI (US);
Abstract
Apparatus for removing structural concrete comprises an elongated hood having an inner generally non-accessible zone, an outer zone accessible for performing maintenance functions and an elongated slot between the zones. A reciprocal feed carriage is guidably mounted within the hood in the inner zone and mounts a seal support housing within the outer zone. Portions of the housing extend through the slot into the inner zone and are pivotally mounted upon the carriage. A rotating shaft and seal assembly is mounted upon the seal support housing in the outer zone, including a body having a water inlet adapted for connection to a source of water under pressure. An elongated tubular shaft and nozzle assembly is axially connected to the rotatable seal and shaft assembly and extends from the seal support housing through the slot into the inner zone of the hood, through the carriage and into the bottom of the hood for directing water under pressure against the structural concrete. The seal support housing and the component parts located thereon are mounted for a pivotal rotation, with the tubular shaft and nozzle assembly movable in an arc through the slot into the outer zone of the hood where the tubular shaft and nozzle assembly may be conveniently serviced, repaired and maintained.