Boot and shoe making – Miscellaneous – Assembly machines
Patent
1975-01-21
1976-02-17
Lawson, Patrick D.
Boot and shoe making
Miscellaneous
Assembly machines
A43D 0000
Patent
active
039382109
ABSTRACT:
Slippers of heat-sealable synthetic polymeric sheeting comprise a sole member and an upper member joined thereto by a heat-seal joint, the upper member having a progressively wider portion of said sheeting relative to the sole member, as measured across the slipper, whereby a permanent foot-receiving pocket is provided to facilitate donning the slipper without requiring the use of the hands. Method and apparatus for making such slippers comprise steps or means for joining separate bands of the material by heat-sealing the bands to each other on profiles corresponding to the sole and upper members, while simultaneously providing extra width in the upper member to create the foot receiving pocket.
REFERENCES:
patent: 3426454 (1969-02-01), Mitchell et al.
patent: 3523378 (1970-11-01), Mitchell et al.
patent: 3638262 (1972-02-01), Mitchell et al.
Mitchell James G.
Mitchell Winalee G.
Purdy Paul D.
Lawson Patrick D.
Mitchell James G.
Mitchell Winalee G.
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