Ribbon tensioning assembly

Details Ribbon tensioning assembly Ribbon tensioning assembly

1998-06-12

1999-07-27

Yan, Ren

Typewriting machines

Including interposed inking device for record-medium

Ribbon-feeding mechanism

400242, B41J 3314

Patent

active

059278757

ABSTRACT:
A ribbon tensioning assembly includes a knob having a top wall, an internal raised portion attached to the top wall having a first helical camming surface and a second helical camming surface out of phase and disposed about a center point. A compression helix has a first end portion forming a first helical camming surface and a second helical camming surface for engaging first and second helical camming surfaces of the knob, compression helix having a second end portion for receiving a spring. A clutch engages a surface and connects to a spring. A spindle, attaching to a ribbon supply roll, secures the knob, the compression helix, the spring and the clutch in relative position such that turning the spindle causes frictional resistance between the clutch and the surface for creating increased tension in a ribbon dispensed from the supply roll.

REFERENCES:
patent: 4642656 (1987-02-01), Shibuya et al.
patent: 4797690 (1989-01-01), Takita et al.
patent: 4812063 (1989-03-01), Kunimitsu et al.
patent: 5085532 (1992-02-01), Surya et al.
patent: 5318368 (1994-06-01), Fogle et al.
patent: 5326182 (1994-07-01), Hagstrom
patent: 5370470 (1994-12-01), Kim
patent: 5378072 (1995-01-01), Gunderson
patent: 5478159 (1995-12-01), Schneider et al.
patent: 5480242 (1996-01-01), Gunderson
patent: 5496121 (1996-03-01), Gunderson
patent: 5619244 (1997-04-01), Manna
patent: 5622440 (1997-04-01), Yamamoto et al.
patent: 5820279 (1998-10-01), Lodwig et al.
Patent Abstracts of Japan, vol. 8, No. 26, (M-273), Feb. 3, 1984 & JP 58 183281, Oct. 26, 1983.

Affiliated with

Also associated with

Rating

Ribbon tensioning assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ribbon tensioning assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ribbon tensioning assembly will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-870848