Shaped mechanical compression packing

Details Shaped mechanical compression packing Shaped mechanical compression packing

1985-11-01

1987-06-16

Petrakes, John

Textiles: braiding, netting, and lace making

Processes and products

With material incorporated in diverse ways

87 1, 87 5, 87 8, 87 11, D04C 106, D04C 112, F16J 1522, F16J 1526

Patent

active

046728791

ABSTRACT:
A non-symmetrical construction of braided mechanical compression packing which includes warp yarns removed from the inner corners to prevent "popping" of these yarns during manufacture or when the packing is wrapped about a shaft. Additionally, a number of embodiments involving interior space filled with varying numbers of warp yarns at different positions produce an optimal warp density gradient in the finished braid, such that the braid has a more regular trapezoidal cross-section prior to being wound about a shaft, with the higher density occurring at the outside of the packing and tapered in density toward the inside of the packing. This non-symmetry of construction results in longer packing life and reduced shaft wear when used to prevent leakage about rotating shafts.

REFERENCES:
patent: 2360106 (1944-10-01), Buhler
patent: 2667684 (1954-02-01), Boyer et al.
patent: 2716034 (1955-08-01), Main
patent: 2827319 (1958-03-01), Pearce
patent: 3646846 (1972-03-01), Houghton et al.
patent: 4550639 (1985-11-01), Champlin

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