Tools – Packing
Patent
1997-07-28
1999-03-23
Meislin, D. S.
Tools
Packing
29259, 29264, B25B 3300
Patent
active
058845364
ABSTRACT:
An apparatus for quickly and efficiently removing valve packing from a valve comprises a sleeve which is positionable about the valve stem which extends exteriorly of the packing. The sleeve is rotatably connected to a translation mechanism operable in conjunction with the exposed portion of the valve stem to translate the sleeve toward or away from the packing. A plurality of curved teeth depend from the sleeve in such a manner that they all curve in the same rotational direction with respect to the sleeve. When the sleeve is rotated in that rotational direction and a downward force on the sleeve is applied by operating the translating mechanism, the teeth are forced to penetrate down and into the packing material. Once embedded, the translation mechanism can be operated in the opposite direction to apply an axial removal force to the sleeve and, hence the teeth, thereby extracting the valve packing in which the teeth are embedded. Advantageously, since the sleeve is rotatable independently of the translation mechanism, the rotational force on the sleeve can be maintained or furthered to ensure the teeth remain embedded in the valve packing and to provide relative twisting motion between the valve packing and valve packing housing to facilitate removal of the valve packing. The teeth are readily removable and replaceable with different teeth or other implements for performing a variety of functions relating to removal of the valve packing, such as cutting, chiseling, gouging, cleaning and polishing.
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