Couple of gear wheels for driving printing drum with means for m

Details Couple of gear wheels for driving printing drum with means for m Couple of gear wheels for driving printing drum with means for m

1998-07-16

1999-10-12

Burr, Edgar

Printing

Rolling contact machines

Rotary

74409, 74440, B41F 500

Patent

active

059641509

ABSTRACT:
In a couple of axially engageable/disengageable gear wheels for driving a printing drum, in which each gear wheel has a duplicate construction including a primary gear for transmission of a power for driving the printing drum and an auxiliary gear for suppressing a backlash, the primary gear and the auxiliary gear are shifted relative to one another in the phase, except a predetermined meshing area, so that the two duplicate gear wheels are allowed to disengage from and re-engage with one another only when the two gear wheels are rotationally positioned at a predetermined rotational relationship.

REFERENCES:
patent: 3359819 (1967-12-01), Veillette et al.
patent: 3974710 (1976-08-01), Granger et al.
patent: 4072104 (1978-02-01), Schaffer
patent: 4781073 (1988-11-01), Bondhus et al.
patent: 5181433 (1993-01-01), Ueno et al.
patent: 5586499 (1996-12-01), Beaumont et al.
patent: 5771745 (1998-06-01), Goette et al.
patent: 5836246 (1998-11-01), Saito et al.

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