Ventilated expandable boot

Details Ventilated expandable boot Ventilated expandable boot

1985-09-26

1991-05-14

Seidleck, James J.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

92 34, 138121, 428 369, B32B 326

Patent

active

050155156

ABSTRACT:
An expandable boot employing a bellows for enclosing and protecting an object that changes in dimension. In one embodiment, the boot includes a vent in the form of at least one tube projecting from the boot and open to the atmosphere for the admission or expulsion of air as the bellows is extended or contracted. Preferably, a second tube similar to the first and projecting from the opposite end of the boot permits passage of air through the boot when it is stationary to prevent excess moisture accumulation. The bellows is protected against kinking during its compression by providing that adjacent webs in the pleats of the bellows are asymmetrical.

REFERENCES:
patent: 2143960 (1939-01-01), Stalter
patent: 3314430 (1967-04-01), Alley et al.
patent: 3369411 (1968-02-01), Hines
patent: 3878685 (1975-04-01), Schmunk
patent: 3967023 (1976-06-01), Lysek
patent: 4003408 (1977-01-01), Turner
patent: 4058018 (1977-11-01), Lauper
patent: 4113818 (1978-09-01), Drossbach
patent: 4168799 (1979-09-01), Turner
patent: 4396574 (1983-08-01), Kovacs
patent: 4446948 (1984-05-01), Melinat
patent: 4515842 (1985-05-01), Kovacs
patent: 4629641 (1986-12-01), Paullin

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