Boots – shoes – and leggings – Boots and shoes – Occupational or athletic shoe
Patent
1991-02-12
1992-10-06
Foster, Jimmy G.
Boots, shoes, and leggings
Boots and shoes
Occupational or athletic shoe
36 88, 36 93, 36 71, A43B 516
Patent
active
051520834
ABSTRACT:
An air pump assembly is disclosed which comprises an outer shell and an inner shell nested within the outer shell; the shells defining between them a housing into which is secured an air pump. The latter includes an air chamber having a solid base and a resilient pumping membrane; the pump further including valving unit in air communication with the air chamber, the unit being provided with an air deflation rod. The housing has an aperture capable of giving access to the flexible membrane to operate the pump. This housing is sized so that the air pump is held completely in it to protect it against outer shocks; the membrane being accessible from outside the outer shell through the aperture. The same outer shell is formed with an outwardly open recess into which the deflation rod is received; this recess being sized for the rod to be held wholly in it and be protected against outer shocks.
REFERENCES:
patent: 2276502 (1942-03-01), McCoy
patent: 3664043 (1972-05-01), Polumbus, Jr.
patent: 4232459 (1980-11-01), Vaccari
patent: 4702022 (1987-10-01), Porcher
patent: 4730403 (1988-03-01), Walkhoff
patent: 4732549 (1988-03-01), von Schuckmann
patent: 4845862 (1989-07-01), Phillips, Jr. et al.
patent: 4893417 (1990-01-01), Dalla Lana
A. Lambert International Inc.
Foster Jimmy G.
Greigg Edwin E.
Greigg Ronald E.
Hilliard Thomas P.
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