Patent ID: 8621770
Filing Date: 2014-01-07
Classification: E02F,Y10T

Abstract:
1. An apparatus mountable on a excavating device in which an implement can be rotated relative to an excavating boom on the excavating device about multiple perpendicular axes in response to fluid pressure supplied by the excavating device, the apparatus comprising: a housing attachable to the excavating boom; a combination rotary union and bearing disc mounted to the housing and rotatable relative to the housing about a first axis upon the application of hydraulic fluid pressure supplied by the excavating device, the combination rotary union and bearing disc being attachable to the implement, and including fluid passages extending through the combination rotary union and bearing disc so that hydraulic fluid pressure can be supplied to a fluid powered actuator for rotating the implement about a second axis; and a bearing assembly positioned between the bearing disc and the housing for bearing loads transverse to the first axis, the bearing assembly extending around a portion of the combination rotary union and bearing disc, and further comprising bearing races on the bearing disc and on the housing with a plurality of bearings disposed in the bearing races.