Device for binding sheets by heating

Details Device for binding sheets by heating Device for binding sheets by heating

1997-10-06

1999-06-08

Jeffery, John A.

Electric heating

Heating devices

Tool or instrument

412 9, 412 33, 412 11, 219492, H05B 100, B42B 500

Patent

active

059102632

ABSTRACT:
The device includes an elongated electrical heating unit (20) whose length matches the length of an elongated opening in the device, and has a switching system to activate an electrical circuit at the moment when sheets to be bound are placed on the heating unit (20). Heating unit (20) is wired in series with a switch (11) in the switching system and a heating current switch (31). Means are provided to keep this heating current switch (31) turned on when the switching system is turned on. The device includes a comparator (34) whose input is connected to a temperature sensor (26); when a predetermined upper temperature limit (T.sub.max) is reached it turns off the heating current switch (31). There is also a provision so that after the heating current switch (31) is turned off it is kept off until the switch (11) in the switching system has been switched off and then on again.

REFERENCES:
patent: 3863596 (1975-02-01), Anderson
patent: 4678386 (1987-07-01), Wiholm
patent: 4855612 (1989-08-01), Koga et al.
patent: 4863332 (1989-09-01), Wilholm et al.
patent: 5035561 (1991-07-01), Loibl
patent: 5120176 (1992-06-01), Bhatia et al.
patent: 5219453 (1993-06-01), Furukawa et al.
patent: 5229578 (1993-07-01), Kusano et al.
patent: 5250985 (1993-10-01), Ishii et al.
patent: 5252018 (1993-10-01), Kitahara et al.
patent: 5256859 (1993-10-01), Nanos et al.
patent: 5275520 (1994-01-01), Yano et al.
patent: 5355207 (1994-10-01), Yano et al.
patent: 5365040 (1994-11-01), Oka
patent: 5420396 (1995-05-01), Itoh et al.
patent: 5454680 (1995-10-01), Lazar
patent: 5735659 (1998-04-01), Kosasa et al.

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