Browse Prior Art Database

Folding Tank Cover

IP.com Disclosure Number: IPCOM000049286D
Original Publication Date: 1982-Apr-01
Included in the Prior Art Database: 2005-Feb-09
Document File: 2 page(s) / 38K

Publishing Venue

IBM

Related People

Lines, DW: AUTHOR

Abstract

This article discloses a bifold cover which is arranged with linkages such that the cover can be placed on and removed from a tank without guiding or sliding the cover on the tank edge, thus eliminating particle generation during cover opening and closing.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 82% of the total text.

Page 1 of 2

Folding Tank Cover

This article discloses a bifold cover which is arranged with linkages such that the cover can be placed on and removed from a tank without guiding or sliding the cover on the tank edge, thus eliminating particle generation during cover opening and closing.

Shown in the drawing is a side view of the cover 10 sited on a tank 11. The cover 10 is a bifold with a front section 11 and a rear section 12. Mounted on each side of the front section 11 is an ear 13 (only one of which is shown) which extends from the side of the cover. Pivotally mounted to the ear 13 is a control link 14 whose other end is pivotally attached to a fixed support 15 which can be rigidly connected to the tank wall or to any other fixed support. In back of the tank is a fixed support 16 which carries a main cover pivot mechanism which comprises an arm 18 and a csm 19. The arm 18 is fixedly attached at one end to the rear cover 12 and at the other end to the cam 19. The cam 19 is pivotally attached to the fixed support 16.

Affixed to the cam 19 by means of a cable (not shown) is a shaft 20 which can be bidirectionally driven by an air cylinder 21. As the air cylinder causes the shaft 20 to extend downwardly, the cam 19 is caused to rotate around its pivot point, raising the arm 18 and causing the cover to begin folding at its center point. The control link 14 causes the front half 11 of the cover 10 to rise and fold inwardly as the cover is raised upwardly from the tank. When th...