Boots – shoes – and leggings – Shanks
Patent
1977-10-26
1979-07-31
Kee Chi, James
Boots, shoes, and leggings
Shanks
12146S, 428480, A43B 1342, A43D 3100
Patent
active
041625838
ABSTRACT:
A strip which will form a rigid shoe stiffener, such as a shoe shank, is applied to the surface of a shoe to be stiffened, such as to the bottom of the insole. The shank strip is flexible and includes a carrier sleeve containing a plurality of fiberglass strands in an externally activatable thermosetting plastic matrix. The sleeve is formed from a pair of sheets of material which are bonded to each other along their lateral, longitudinally extending margins to seal the strip as well as to provide a means by which the strip may be handled and maintained in place on the shoe bottom during activation of the strip. The margins are heat sealed in a doubled-over, folded configuration which insures that the margins will not curl over and will remain substantially flat, to facilitate handling of the strip.
REFERENCES:
patent: T903012 (1972-10-01), Quinn et al.
patent: 1985545 (1934-12-01), Nickerson
patent: 2232767 (1941-02-01), Brophy
patent: 2294982 (1942-09-01), Hathaway
patent: 3091872 (1963-06-01), Baumann et al.
patent: 4081917 (1978-04-01), Bradley et al.
Fiber Facts, 1965-1966, FMC Corporation, American Viscose Division 1964, p. 65.
Bush Universal Inc.
Chi James Kee
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