Scuff slipper and method and apparatus for the manufacture thereof
US3938210A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jan 21, 1975 |
| Grant date | Feb 17, 1976 |
| Priority date | — |
| Expiry date | Jan 21, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/50
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.