Browse Prior Art Database

COUNTERBALANCE ASSEMBLY

IP.com Disclosure Number: IPCOM000025894D
Original Publication Date: 1988-Dec-31
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 101K

Publishing Venue

Xerox Disclosure Journal

Abstract

Many automatic reproducing devices use a clamshell architecture wherein a top portion which is pivotally mounted at one side of the processor contains the imaging platen, optics, developer and photoreceptor while the lower portion contains, for example, the paper path and fuser. The upper and lower portion are mounted in clamshell fashion to permit access to the machine for a variety of purposes, for example, in clearing a paper jam. Typically, a counterbalance device has been used to support the clamshell in the open position to enable operator activities when in the open position.

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Page 1 of 2

XEROX DISCLOSURE JOURNAL

COUNTERBALANCE ASSEMBLY

John L. Howard Peter A. Sardano

Proposed Classification

U.S. C1.16/290

Int. C1. E05f 1/08

10

FI-

I

/

22

14

24 16

- -

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Page 2 of 2

COUNTERBALANCE ASSEMBLY (Cont'd)

Many automatic reproducing devices use a clamshell architecture wherein a top portion which is pivotally mounted at one side of the processor contains the imaging platen, optics, developer and photoreceptor while the lower portion contains, for example, the paper path and fuser. The upper and lower portion are mounted in clamshell fashion to permit access to the machine for a variety of purposes, for example, in clearing a paper jam. Typically, a counterbalance device has been used to support the clamshell in the open position to enable operator activities when in the open position.

The Figure illustrates a Counterbalance assembly useful in such a device. In the Figure, the counterbalance assembly is illustrated in its extended or opened orientation. One end of the counterbalance assembly comprises a bracket 10 which is mountable on the upper portion of the clamshell and the other end has a bracket 12 which is mountable to the lower portion of the clamshell. The counterbalance assembly comprises an inner tube 18 and outer tube 16 continuously urged to the open position as illustrated by means of coiled spring 20 supported at one end by bracket 12 and at the other end by the inner ortion of outer tube 16. A shaft 14 thre...