B - Operations – Transporting – 06 – B
Patent
B - Operations, Transporting
06
B
74/19
B06B 1/16 (2006.01) B07B 1/42 (2006.01) B65G 27/32 (2006.01)
Patent
CA 1180206
Abstract A system for varying the vibration generating force of a rotating eccentric weight by providing a second weight movable from a position on one side of the axis of rotation of the eccentric weight to a second position on the opposite side of the axis of rotation, the movement being linear and radially across said axis of rotation. In addition, a spring may be employed to move the movable weight toward the second position ini- tially, in compression, and later to resist additional movement in said direction, in tension, so as to provide basically a linear system for varying the vibrational force. Fluid pressure may be applied to the movable weight which pressure will combine with the tension in the spring to move the movable weight against centrifugal force and toward the axis of rotation of the wheel. Once the center of gravity of the weight passes the axis of rotation, further fluid pressure on the movable weight will act against the compression of the spring and will combine with the centrifugal force to move the movable weight radially outward from the axis of rotation.
431977
General Kinematics Corporation
Meredith & Finlayson
LandOfFree
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