Print guide mechanism

Details Print guide mechanism Print guide mechanism

1994-08-11

1996-06-25

Hilten, John S.

Typewriting machines

Carriage or carriage-moving or movement-regulating mechanism

Means for repositioning carriage or platen thereon

400354, 4003541, B41J 1122

Patent

active

055294120

ABSTRACT:
A print guide mechanism having parallel first and second guide rods, and a carriage assembly designed to move along the guide rods. The carriage assembly in a preferred embodiment comprises a frame and at least one pair of associated roller bearing assemblies being secured to the frame and being arranged so as to engage the first guide support rod for providing linear movement of the carriage assembly along the first guide rod, at least one upper roller bearing assembly mounted to the frame for engagement with the second guide rod, and a first mounting assembly having at least one lower roller bearing assembly. The at least one upper and lower roller bearing assemblies are arranged so as to engage the second guide rod between. The first mounting assembly is pivotally mounted to the frame so as to compensate for parallel misalignment between the guide rods and is biased for applying a loading force so that positive engagement is provided between the guide rods and the roller bearing assemblies. In the preferred embodiment at least one of the roller bearing assemblies having an outer engaging surface made of a material having a modulus of elasticity less than the modulus of the guide rod which it engages.

REFERENCES:
patent: 3778121 (1973-12-01), Levesque
patent: 3790233 (1974-02-01), Polidor
patent: 3983985 (1976-10-01), Guerrini et al.
patent: 4025135 (1977-05-01), Hishida
patent: 4111293 (1978-09-01), Kockler et al.
patent: 4177471 (1979-12-01), Mitchell
patent: 4200402 (1980-04-01), Rix
patent: 4317137 (1982-02-01), Tompkins
patent: 4445798 (1984-05-01), Munehiro
patent: 4493571 (1985-01-01), Potter
patent: 4528607 (1985-07-01), Thompson
patent: 4648725 (1987-03-01), Takahashi
patent: 4715730 (1987-12-01), Magnuson
patent: 4898487 (1990-02-01), Brull et al.
IBM technical disclosure bulletin; vol. 20, No. 2 "Carrier Support Device" Jul. 1977.

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