Browse Prior Art Database

PLATEN COVER WITH FRICTION CLOSURE

IP.com Disclosure Number: IPCOM000024375D
Original Publication Date: 1980-Jun-30
Included in the Prior Art Database: 2004-Apr-02
Document File: 2 page(s) / 62K

Publishing Venue

Xerox Disclosure Journal

Abstract

A friction device is used to retard the fall to horizontal of a panel in a raised position. Typically, the panel may comprise a platen cover 10 of an automatic reproduction machine, which is raised above the horizontal position to a vertical position by being pivoted about pivot point 12. The friction device comprises a friction track 14 through which a ball 16 may be horizontally moved. The ball 16 is fastened to one end of the rigid rod 18, which is pivotally mounted to the platen cover 10 at point 20. As the cover is lowered, the ball is pushed along the friction surface of the track, which enables the frictional resistance between the ball and the track to retard the fall of the platen. The track typically has a cross-section profile to match the ball as shown in cross-section A-A. The configuration of the ball and track friction profile may be adjusted particularly with a flexible track material. Various materials may be used to provide the friction surface in the friction track including various rubber, elastomeric or thermoplastic materials. With the careful selection of friction track materials and ball material, the friction resistance to the falling to horizontal of the platen cover may be readily adjusted.

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I

XEROX DISCLOSURE JOURNAL

PLATEN COVER WITH FRICTION CLOSURE
Dean R. Newcomb

Proposed Classification
U.S. c1.355/75 Int. C1. G03b 27/62

A- A

A friction device is used to retard the fall to horizontal of a panel in a raised position. Typically, the panel may comprise a platen cover 10 of an automatic reproduction machine, which is raised above the horizontal position to a vertical position by being pivoted about pivot point 12. The friction device comprises a friction track 14 through which a ball 16 may be horizontally moved. The ball 16 is fastened to one end of the rigid rod 18, which is pivotally mounted to the platen cover 10 at point 20. As the cover is lowered, the ball is pushed along the friction surface of the track, which enables the frictional resistance between the ball and the track to retard the fall of the platen. The track typically has a cross-section profile to match the ball as shown in cross-section A-A. The configuration of the ball and track friction profile may be adjusted particularly with a flexible track material. Various materials may be used to provide the friction surface in the friction track including various rubber, elastomeric or thermoplastic materials. With the careful selection of friction track materials and ball material, the friction resistance to the falling to horizontal of the platen cover may be readily adjusted.

Volume 5 Number 3 May/June 1980 293

[This page contains 1 picture or other non-text object]

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