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:
May. 06, 1997
Filed:
Aug. 24, 1995
Barry E Campbell, Canisteo, NY (US);
Harlan E Finnemore, Pocatello, ID (US);
ABB Air Preheater, Inc., Wellsville, NY (US);
Abstract
A swing-arm sootblower for a rotary regenerative air preheater is mounted to sweep across the air preheater rotor at a constant speed or angular velocity. A constant speed motor is attached through a speed reducer to a drive sprocket. A chain drive turns driven sprocket which is connected to the rotatable mounting shaft for the sootblower lance or arm. Limit switches are tripped at the ends of the arc of travel of the lance by a trip arm mounted on the drive sprocket to turn the motor off and to close a valve for the sootblowing medium. The speed of the lance can be adjusted in general or at particular points in the art of travel.