Global Patent Index - EP 0036987 A1

EP 0036987 A1 19811007 - Bulk material handler and feeder.

Title (en)

Bulk material handler and feeder.

Title (de)

Vorrichtung zur Handhabung und Zuführung von Massenwerkstoffen.

Title (fr)

Dispositif de manipulation et d'alimentation pour un matériau en vrac.

Publication

EP 0036987 A1 19811007 (EN)

Application

EP 81101892 A 19810314

Priority

US 8000350 W 19800331

Abstract (en)

A bulk material feeder (10) has two rollers (12,14), at least the lower (14) of which is driven (24,26). Strip material (34) is threaded around the side of the upper roller (12) toward the direction of feed, between the rollers (12,14), around the side of the lower roller (14) opposite the direction of feed and to downstream machinery (38) spaced from the feeder (10). Roller (12,14) spacing is greater than material (34) thickness precluding compression of the material (34). Feed is produced by friction between the roller (14) and material (34) only. Feed rate is greater than usage thereby producing a depending loop (40) between the feeder (10) and the downstream machinery (38). In one embodiment, increasing loop (40) size decreases material (34) and roller (14) contact, causing relative slippage and a discontinuance of feed. In another embodiment, both rollers (12, 14) are driven and loop (40) size is limited by a photoelectric device (42) and associated control circuitry.

IPC 1-7

B65H 17/20; B65H 17/42

IPC 8 full level

B65H 20/00 (2006.01); B65H 20/02 (2006.01); B65H 20/24 (2006.01); B65H 20/30 (2006.01); B65H 26/00 (2006.01)

CPC (source: EP)

B65H 20/02 (2013.01); B65H 20/24 (2013.01); B65H 2408/212 (2013.01)

Citation (search report)

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family (publication)

EP 0036987 A1 19811007; JP S57500469 A 19820318; WO 8102879 A1 19811015

DOCDB simple family (application)

EP 81101892 A 19810314; JP 50097780 A 19800331; US 8000350 W 19800331