Tools – Packing
Patent
1997-02-10
1999-05-18
Watson, Robert C.
Tools
Packing
29235, B25B27/02
Patent
active
059040742
ABSTRACT:
A packing puller and puller lifting tool are used together for extracting packing material or seals from a stuffing box, as used for sealing various hydraulic equipment such as motors, pumps, shafts, etc. The pulling tool comprises either a rigid or a flexible shaft with a bit attachment end at one end and a handle at the opposite end. The working bits may be interchangeable in order that the optimum configuration may be selected for a given job, and/or for replacement of a damaged bit. The shaft of the puller includes a series of lifting lugs permanently affixed thereto, with which a lifting or lever tool may be engaged to provide additional mechanical advantage in lifting the puller and packing from the stuffing box. The lifting tools may comprise a single elongate arm with each end having a different working bit configuration for optimum efficiency, or may comprise a lever arm with removably interchangeable bits so the appropriate bit configuration may be selected for any given situation. The lever arm and bits preferably have a mating square drive configuration, with the lever arm being similar to a square drive ratchet extension with a handle at one end thereof and the bits having square sockets opposite their working ends. Alternatively, the handle may comprise a square drive ratchet with the bits having square drive sockets in their sides, so the ratchet may be rotated in the manner used for working with a threaded fastener.
REFERENCES:
patent: 118823 (1871-09-01), Smade
patent: 931718 (1909-08-01), Bales
patent: 1635743 (1927-07-01), Davenport
patent: 1653995 (1927-12-01), English
patent: 1758504 (1930-05-01), English
patent: 1858176 (1932-05-01), Webb
patent: 2066598 (1937-01-01), Wiessner
patent: 5692282 (1997-12-01), Baca
patent: 5695172 (1997-12-01), Mreha
Litman Richard C.
Watson Robert C.
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