The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 20, 1988
Filed:
Sep. 21, 1987
Kermit D Paul, Bethlehem, PA (US);
Fuller Company, Bethlehem, PA (US);
Abstract
A system for supplying a gas under pressure to a vessel such as a blender for particulate material which includes a central vertical lift column for recirculating material through the vessel to achieve blending. The system uses a first source of gas under pressure which may be a low pressure source suitable for a continuous operation of the blending apparatus. The system also is connected to a high pressure source of air such as plant air which is utilized as a supplemental source of air under pressure for initial start-up of the apparatus. A control system is provided which regulates the flow of the high pressure air to the gas supply conduit which acts as a reservoir for high pressure air. The control system allows the gas supply conduit to be pressurized. This high pressure source flows rapidly to the vessel at start-up to break an initial head of material which may be lodged in the vertical lift column of the blending apparatus thereafter the high pressure source of air is no longer utilized in normal blending operation.