B - Operations – Transporting – 60 – J
Patent
B - Operations, Transporting
60
J
268/53
B60J 1/17 (2006.01) E05F 11/06 (2006.01) F16H 1/16 (2006.01) G05G 1/08 (2006.01)
Patent
CA 1202645
TITLE OF THE INVENTION A RETAINER BEARING AND BEARING ASSEMBLY FOR A WINDOW OPERATOR AND ASSEMBLY METHOD AND TOOL ABSTRACT OF THE DISCLOSURE The bearing assembly has an externally-threaded retainer bearing threaded into a housing of deformable metal for rotatably supporting and maintaining a worm gear shaft in position. The retainer bearing has a plurality of flat sides with a spanner wrench slot at the outer end of each side whereby a flat side and spanner wrench slot of the retainer bearing can be lo- cated at a particular location relative to the housing and material of the housing is deformed into the space between the flat side of the retainer bearing and the threaded bore of the housing as well as into the spanner wrench slot to securely lock the retainer bearing in position. In the method of assembling the bearing as- sembly for a window operator, a worm gear shaft is inserted into a bore of a deformable metal housing, with the bore having an internal thread adjacent an outer end thereof, an externally-threaded retainer bearing is placed onto the worm gear shaft and threaded into the internal thread of the housing bore to a fully-seated position, the retainer bearing is rotatably backed-off in the bore less than one revolution to align a flat side and a spanner wrench slot of the retainer bearing with a particular location on the housing and the housing is staked at said location to flow housing metal into inter- locking engagement with the flat side and spanner wrench slot of the retainer bearing. A special tool is used having a guide block shaped to fit onto a part of the housing in one particular orientation, drive means ro- tatably mounted in the guide block has a pair of spanner teeth for engagement in a pair of spanner wrench slots of the retainer bearing and stop elements mounted on the guide block limit rotation of the spanner teeth relative to the guide block with one of said stop elements being oriented to the location of the tool relative to the housing to have a spanner wrench slot aligned with a stake area on the housing.
427884
Mosher Eugene L.
Sandberg Christopher T.
Meredith & Finlayson
Truth Incorporated
LandOfFree
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