Flexible or portable closure – partition – or panel – Pleating type – Lazy-tong links pivot about axes parallel to panel
Patent
1991-07-12
1992-08-18
Purol, David M.
Flexible or portable closure, partition, or panel
Pleating type
Lazy-tong links pivot about axes parallel to panel
160237, A47H 500
Patent
active
051390698
ABSTRACT:
A light proof pleated window shade comprises an upper rail, a bottom rail, a pleated blind arranged between the upper rail and the bottom rail, a string set with one end thereof being fastened securely to the bottom rail and with the other end thereof passing through a plurality of string loops attached integrally to the pleated blind and through the upper rail, and a string pulley lock arranged in the end portion of the upper rail to permit the free end of the string to emerge therefrom and to retain the string. The pleated blind is characterized in that it comprises thereto a plurality of loop areas of a width located at the protruded edges of folded portions thereof. The loop areas are composed of the woof thread and the warp thread which are not interlaced. The woof thread of loop area extends outwardly to form a string loop to accommodate therein a string.
REFERENCES:
patent: 2295137 (1942-09-01), Sutton
patent: 3478805 (1969-11-01), Haggard
patent: 3952788 (1976-04-01), Scholer
patent: 3999590 (1976-12-01), Koch
patent: 4907635 (1990-03-01), Bunger et al.
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