公开(公告)号：US3552621A

公开(公告)日：1971-01-05

申请号：US3552621D

申请日：1968-09-03

Applicant: BECKMAN INSTRUMENTS INC

Inventor： KUPFERSCHMIDT ALBERT

IPC: B41J15/16 ,  F16D7/02 ,  B65H17/20

CPC classification number: F16D7/025

Abstract: A chart paper drive mechanism is provided in which the chart paper is driven by a pair of drive roller cartridges the rollers of which engage the chart paper near the edges thereof. Each drive roller cartridge is provided with its own friction clutch mechanism which may be independently adjusted to give a desired value of torque at which the drive roller will slip. By equalizing the preset torque of each cartridge the chart paper is driven in a uniform manner and any tendency to skew or weave is rapidly corrected. Also, the cartridges may be readily adjusted to different positions on the drive shaft to accommodate different widths of chart paper.

公开(公告)号：US3646569A

公开(公告)日：1972-02-29

申请号：US3646569D

申请日：1970-04-13

Applicant: BECKMAN INSTRUMENTS INC

Inventor： ERBACH ARTHUR R ,  KUPFERSCHMIDT ALBERT

IPC: G01D15/30

CPC classification number: G01D15/30

Abstract: A drive arrangement for Z-fold chart paper is provided in which spaced apart guide means positioned between the back tensioning roller and the chart supply provide a positive lateral reference for the chart web just prior to its engagement with the back tensioning roller. The guide means may be conveniently changed in spacing to accommodate chart paper of different widths without requiring any readjustment of the drive rollers or the back tensioning roller.

公开(公告)号：US3469903A

公开(公告)日：1969-09-30

申请号：US3469903D

申请日：1967-03-22

Applicant: BECKMAN INSTRUMENTS INC

Inventor： GRICHNIK JAMES A ,  KUPFERSCHMIDT ALBERT

IPC: A61B3/02 ,  A61B5/00 ,  A61B5/16

CPC classification number: A61B5/4863 ,  A61B3/02 ,  A61B5/162