초록 ▼

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 zon

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.

대표청구항 ▼

An apparatus for removing structural concrete comprising: an elongated hood having an inner zone and an outer zone; said inner zone being generally nonaccessible; and said outer zone being accessible for maintenance purposes; said hood having an elongated slot extending along the length thereof and

An apparatus for removing structural concrete comprising: an elongated hood having an inner zone and an outer zone; said inner zone being generally nonaccessible; and said outer zone being accessible for maintenance purposes; said hood having an elongated slot extending along the length thereof and located between said inner and outer zones; a feed carriage guidably mounted within and upon said hood in the inner zone thereof for longitudinal reciprocal movement along the length of said hood; a seal support housing overlying said carriage and located substantially in the outer zone of said hood; said support housing including portions extending through said slot into said inner zone for connection to said carriage; pivot means interposed between said housing portions and said carriage; a rotating shaft and seal assembly mounted upon said support housing and including a body having a water inlet adapted to be connected to a source of water under pressure; and an elongated tubular shaft and nozzle assembly having a generally vertical operating position, axially connected to said rotating seal and shaft assembly and extending from said support housing in said outer zone through said slot into said inner zone and through said carriage into the bottom of said hood for directing water under pressure against the structural concrete; said support housing being adapted to pivot about said pivot means to swing and thereby move said tubular shaft and nozzle assembly from the vertical operating position to a generally horizontal inspection and service position for maintenance purposes.