Browse Prior Art Database

PNEUMATIC ELEVATOR

IP.com Disclosure Number: IPCOM000025130D
Original Publication Date: 1983-Oct-31
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 54K

Publishing Venue

Xerox Disclosure Journal

Abstract

A pneumatic paper supply elevator 10 is shown in Figures 1 and 2 that has the advantages of low service requirements, low unit manufacturing cost and a minimum of moving parts. Elevator 10 is constructed to allow frictionless vertical travel by the use of a flexible bellows 12 centered below paper tray 15. Air pressure is supplied to the bellows which causes it to expand and lift the tray. A servomechanism allows the paper stack height to adjust air flow to the bellows. Controlled air flow to the bellows would then maintain the distance between the top of the paper stack and a feed head.

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Page 1 of 2

XEROX DISCLOSURE JOURNAL

PNEUMATIC ELEVATOR 271/147 C1. U.Si Proposed David Montes Classification

Int. C1. R65h 1/08

I0

- \ AIR FLOW IN (MAX.) I

MAX STACK HEIGHT

M/N. STACK

HEIGHT

I I

AIR FLOW

FIG-. I

-

lo

-

-

AIR FLOW

FIG. 2

Volume 8 Number 5 September/October 1983 399

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

Page 2 of 2

PNEUMATIC ELEVATOR (Cont'd)

A pneumatic paper supply elevator 10 is shown in Figures 1 and 2 that has the advantages of low service requirements, low unit manufacturing cost and a minimum of moving parts. Elevator 10 is constructed to allow frictionless vertical travel by the use of a flexible bellows 12 centered below paper tray 15. Air pressure is supplied to the bellows which causes it to expand and lift the tray. A servomechanism allows the paper stack height to adjust air flow to the bellows. Controlled air flow to the bellows would then maintain the distance between the top of the paper stack and a feed head.

400

    XEROX DISCLOSURE JOURNAL Volume 8 Number 5 September/October 1983

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