초록 ▼

A plastic caster has two legs for mounting a wheel(s) and a fork assembly with a bearing housing portion formed around a bearing assembly with inner and outer ring-shaped raceways and bearings evenly dispersed in a cage between the inner and outer raceways. A top-plate has an extension which extensi

A plastic caster has two legs for mounting a wheel(s) and a fork assembly with a bearing housing portion formed around a bearing assembly with inner and outer ring-shaped raceways and bearings evenly dispersed in a cage between the inner and outer raceways. A top-plate has an extension which extension engages the inner raceway permitting the top plate and fork assembly to independently rotate about the second axis. A retention plug is mated with an opening in the extension preventing disengagement of the top-plate from the inner raceway thereby securely attaching the top-plate to the inner raceway.

대표청구항 ▼

A plastic caster has two legs for mounting a wheel(s) and a fork assembly with a bearing housing portion formed around a bearing assembly with inner and outer ring-shaped raceways and bearings evenly dispersed in a cage between the inner and outer raceways. A top-plate has an extension which extensi

A plastic caster has two legs for mounting a wheel(s) and a fork assembly with a bearing housing portion formed around a bearing assembly with inner and outer ring-shaped raceways and bearings evenly dispersed in a cage between the inner and outer raceways. A top-plate has an extension which extension engages the inner raceway permitting the top plate and fork assembly to independently rotate about the second axis. A retention plug is mated with an opening in the extension preventing disengagement of the top-plate from the inner raceway thereby securely attaching the top-plate to the inner raceway. ovides clearance for movement of a tang of an outer blade mounted similarly on said other one of said pair of handles when said tool is in said folded configuration. 22. The multipurpose hand tool of claim 19 wherein said first one of said pair of handles of said tool includes a blade pivot shaft defining said handle-folding pivot axis thereof and having a radially outwardly-extending outer axial bearing located thereon, alongside a portion of said outer blade. 23. The multipurpose hand tool of claim 22 wherein said central channel of said first one of said pair of handles has a pair of walls and said blade pivot shaft extends laterally outward from one of said walls of said central channel and is supported with respect to said at least one of said handles only by said walls of said central channel. 24. The multipurpose hand tool of claim 19 wherein said outer blade has a base and said first one of said pair of handles includes a blade locking member having a locking face and including a spring leg urging said locking face into contact against said base of said outer blade. 25. The multipurpose hand tool of claim 24 wherein said locking face engages an angled surface on said base of said outer blade when said outer blade is in said extended position. 26. The multipurpose hand tool of claim 24 wherein said base overlaps said blade locking member preventing said locking face from engaging said base except when said outer blade is substantially in said extended position. 27. The multipurpose hand tool of claim 24 wherein said outer blade includes a lateral projection, said lateral projection engaging said locking member when said blade is in said stowed position in said side trough. 28. The multipurpose hand tool of claim 27 wherein said locking member defines a notch and said lateral projection is located extending into said notch when said outer blade is in said stowed position. 29. The multipurpose hand tool of claim 27 wherein said locking member is laterally movable and is interconnected with a wall of said central channel, said locking member having a margin defining a receptacle for said lateral projection. 30. The multipurpose hand tool of claim 19 wherein said blade includes a lateral projection and said first one of said handles includes an abutment surface located proximate an end of said central channel, said