Robert Louis Wietecha, 884437 7Th St NE, Minneapolis, MN 55421

4432569, Feb 21, 1984

Jun 25, 1981

6/277289

Robert L. Wietecha - Columbia Heights MN

Air-Mo Hydraulics, Inc. - Minneapolis MN

F16L 2106

285 18

A chuck device for use with a flexible hose including a porting tube means for attachment at one end to a source of hydraulic fluid and having a central passage for the fluid. Attached on the other end of the porting tube is a seal cartridge means which has a hose engaging cylinder extending away from the porting tube to engage the interior of the hose. Collet means are mounted on the cartridge means and are positioned to engage the exterior of the hose when the hose is on said cylinder. A chuck body means is included which is slideably mounted on the porting tube and the cartridge means to define a power chamber. The porting tube has a fluid passage connecting the power chamber to the central passage of the porting tube. Finally, nose cone means are mounted on the body means and has a collet means engaging surface. The passage of fluid into the chamber forces the collets against the surface and causes them to urge the collets against the hose.

4460200, Jul 17, 1984

Jun 25, 1981

6/277205

Robert F. Rasmussen - Minneapolis MN
George R. Smida - Crystal MN
Robert L. Wietecha - Columbia Heights MN
Gary L. Pearson - Minneapolis MN

Air-Mo Hydraulics, Inc. - Minneapolis MN

F16L 2106

285 18

A hydraulic chuck haging a piston means with an axially centered fluid passage and a tube seating means on one end thereof. Collet means are provided and are mounted on the piston means such that axial movement of the piston means operates the collet means. The chuck body is slideably mounted on the piston means and has a nose cone means fixedly mounted on the body means. The nose cone means includes a collet engaging surface to close the collet upon engagement of the surface and the collet means. Seal means for preventing passage of fluid between the tube and the collet means are provided and include a seal cartridge means adjacent to tube seating means on the piston means. Seal seat means are slideably contacting the cartridge means and keyed to the collet means to define a seal cavity between the seal seat and the seal cartridge. The cavity has a first size when the collets are open and a smaller second size when the collets are closed. Finally, o-ring seal means are positioned in the cavity, having a larger cross section than the cavity when the collets are closed.

4189162, Feb 19, 1980

Dec 19, 1977

5/861999

Robert F. Rasmussen - Brooklyn Center MN
George R. Smida - Crystal MN
Robert L. Wietecha - Columbia Heights MN
Gary L. Pearson - Coon Rapids MN

Air-Mo Hydraulics, Inc. - Minneapolis MN

B23B 3130

279 4

A hydraulic chuck having a piston means with an axially centered passage, the first end of which has a tube seating means associated therewith for engaging a tube. Collet means are provided and located at the first end of the piston means for engagement of the tube upon closure of the collet means. Biasing means operably connected to the piston means for normally forcing the surface means upon the collet means are also provided. Sealing means adjacent to tube feeding means for sealing the tube to the chuck, including seal seat means adjacent to collets and positioned to compress the seal radially inward under pressure of the biasing means, are provided. Finally, the handle or attachment means is provided to operably connect to the biasing means to remove the surface means from the collet means, thereby releasing the radially inward compression of the sealing means and permitting insertion of the tube.