초록 ▼

A random orbital sander including a housing, a motor having a vertical axis in the housing, a pad coupled to the motor, a face on the pad extending substantially perpendicularly to the vertical axis, a shroud surrounding the pad, an opening in the shroud, and a dust discharge tube having an inner en

A random orbital sander including a housing, a motor having a vertical axis in the housing, a pad coupled to the motor, a face on the pad extending substantially perpendicularly to the vertical axis, a shroud surrounding the pad, an opening in the shroud, and a dust discharge tube having an inner end in communication with the opening and an outer end on the dust discharge tube end extending at an acute angle to the face of the pad. The sander has a height of between 83 and 86 millimeters and can weigh between 0.68 and 0.75 kilograms. The outer end of the dust discharge tube can extend between about 120 and 157 millimeters from the vertical centerline. A compressed air valve including a first cylindrical wall, a first bore in the first wall, a valve having a base with a second cylindrical wall in engagement with the first cylindrical wall, a second bore in the cylindrical wall, and an inclined surface in the second wall in communication with the second bore. A bore in the motor shaft conducts compressed air which is supplied to the motor through the chamber housing the bearings which support the spindle which mounts the pad.

대표청구항 ▼

[ What is claimed is:] [1.]1. A random orbital action surface-treating tool comprising a housing, a compressed air motor in said housing, a shaft in said motor, a rotor mounted on said shaft, compressed air ducts in said motor for conducting compressed air to said rotor, an eccentric housing mounted

[ What is claimed is:] [1.]1. A random orbital action surface-treating tool comprising a housing, a compressed air motor in said housing, a shaft in said motor, a rotor mounted on said shaft, compressed air ducts in said motor for conducting compressed air to said rotor, an eccentric housing mounted on said shaft, a chamber in said eccentric housing, at least one bearing in said eccentric housing, and another duct in said shaft in communication with said compressed air ducts and said chamber for conducting compressed air to said chamber and to said at least one bearing in said chamber.