Needlepoint sheet having octagonal openings and method of use th

Details Needlepoint sheet having octagonal openings and method of use th Needlepoint sheet having octagonal openings and method of use th

1990-01-16

1991-06-18

Schroeder, Werner H.

Sewing

Elements

Frames

112439, 434 95, D03D 2900

Patent

active

050241761

ABSTRACT:
Needlepoint sheet having channel perforations with octagonal upper and lower openings. Thread drawn through a channel in a diagonal direction is pulled over a flat surface which widens the area covered by the thread. The needlepoint sheet is made of a polymeric material. The perforations are preferably formed into a plurality of aligned rows for receiving the thread. Each channel is enclosed by eight sides which form octagonal upper and lower openings. The width of each of the sides is substantially equal. In a preferred embodiment of the invention each of the sides form a plane, and the height of each of the side planes is substantially equal. In a preferred embodiment of the invention each of the side planes merge along a curved portion of the wall. This distributes the stress during bending of the needlepoint sheet, and reduces cracking and breakage thereof. In use thread is extended through the channels. At least two of the diagonal sides of each channel are normal to the diagonally positioned portion of the thread. The normal side over which the thread is drawn widens and thus maximize the coverage of the diagonally positioned portions of the thread supported thereby.

REFERENCES:
patent: Re31240 (1983-05-01), Mabry
patent: 1333687 (1920-05-01), Strasburger
patent: 4284021 (1981-08-01), Kaye
patent: 4372238 (1983-02-01), Ciganko
patent: 4404750 (1983-09-01), Marx et al.
patent: 4530665 (1985-07-01), Colonel
patent: 4555429 (1985-11-01), Martin

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