Brushing – scrubbing – and general cleaning – Implements – Brush or broom
Patent
1994-08-10
1996-05-21
Scherbel, David
Brushing, scrubbing, and general cleaning
Implements
Brush or broom
15110, A46B 904
Patent
active
055177115
ABSTRACT:
A device for molding a buffer cap at the same time of fixing the cap to the bristle base implanting head of a toothbrush body preform. In the buffer cap molding and fixing device, a stationary molding plate is coupled to a mounting plate by a stop rod such that it is limited in its moving distance. The stationary molding plate has a plurality of sprues aligning with a plurality of gate holes. The bottom surface of the stationary molding plate has a plurality of top cavities, communicating with the sprues through their respective gates and each having a wider section provided with a pair of holding projections for holding a toothbrush body preform. The gates are formed at necks of the top cavities respectively. A back up plate is interposed between the stationary mounting plate and the stationary molding plate. A core plate comes into contact with the stationary molding plate at a parting plane. The top surface of the core plate has a plurality of bottom cavities corresponding to the top cavities. The wider section of the bottom cavity has a recess showing a surface roughness of 0.1-0.45 .mu..
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patent: 4800608 (1989-01-01), Key
Choi Byong D.
Yoo Kyong Y.
Byong Duk Choi
Chin Randall E.
Scherbel David
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