Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1989-07-17
1990-03-06
Schmidt, Frederick R.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
511632, B24B 3100
Patent
active
049054163
ABSTRACT:
An improved reversing weight assembly for a vibratory bowl finishing machine including a dampening housing attached to the upper end of drive shaft for the machine. The housing is filled with dampening material such as a viscous fluid and includes a freely rotatable dampening vane inside the housing. The vane is connectable to an upper eccentric weight which is rotatable in correspondence with rotation of the dampeing vane. Stop pins are adjustably positionable along the housing in association with the eccentric weight to limit its range of movement. Stop pins are positioned to determine the trailing angle for the top weight versus the bottom weight. Upon rotation of the drive shaft, the housing will correspondingly rotate, with the result being that the trailing stop pin will move into abutment with the top weight. The dampening vane, connected to the top weight, must be moved within the viscous fluid, thus dampening the force with which the top weight comes into abutment with the stop pins. Upon reversal, the weight will move to the opposite stop pins, but will be dampened by the viscous fluid.
REFERENCES:
patent: 3514907 (1970-06-01), Strom
patent: 3844071 (1974-10-01), Barlett et al.
patent: 4329817 (1982-05-01), Balz
patent: 4452016 (1984-06-01), Majors
Rachuba M.
Schmidt Frederick R.
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