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. 19, 1998
Filed:
Dec. 20, 1993
Daniel P Gaffaney, Chittenango, NY (US);
Steven J Spencer, Liverpool, NY (US);
Carrier Corporation, Syracuse, NY (US);
Abstract
An apparatus for expanding the tubes in a heat exchanger of the plate fin and tube type. The expander is of the type that expands the tubes by driving a 'bullet' through the tube with the bullet being attached to and driven by an expander or bullet rod. The apparatus has a sensor positioned so as to be able to measure the compressive force on the expander rod. The output of the sensor is proportional to the force exerted on the rod and can be used to provide an alarm or safety shutdown of the apparatus upon the sensing of excessive force on the expander rod. The sensor output can also be used for quality and process control.