Paddle wheel feeder

Details Paddle wheel feeder Paddle wheel feeder

1984-07-02

1987-02-03

Butler, Douglas C.

Sheet feeding or delivering

Feeding

Separators

271120, 271264, B65H 332

Patent

active

046405046

ABSTRACT:
An apparatus for feeding individual substrates from the top of a stack of substrates upon demand includes a paddle wheel having paddles that are semi-cylindrical. The paddles buckle upon contact with the substrates rather than bending and thereby providing reduced normal force sensitivity to paddle deflection and reduced pressure since the force of buckling is a function of the paddle cross-section rather than paddle length for all areas of the paddles except near the paddle wheel hub. The semi-circular blades reduce misfeeding and multifeeding while having an extended wear life.

REFERENCES:
patent: 3630516 (1971-12-01), Hong
patent: 3649003 (1972-03-01), Muller et al.
patent: 4359219 (1982-11-01), Garavuso
patent: 4372549 (1983-02-01), Stiernspetz
patent: 4381860 (1983-05-01), Silverberg
patent: 4515357 (1985-05-01), Hamlin
IBM Technical Disclosure, vol. 19, No. 10--Mar. 1977--Hunt, pp. 3628 and 3629 and vol. 20, No. 8--Jan. 1978, p. 2923.
IBM Technical Disclosure--vol. 22, No. 8B--Jan. 1980--Mathews, pp. 3486 and 3487.
IBM Technical Disclosure, vol. 24, No. 1A--Jun. 1981--Meyer et al., pp. 381 and 382.

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