Joseph T Hannigan

US Patent:

41809033, Jan 1, 1980

Filed:

Mar 2, 1978

Appl. No.:

5/882674

Inventors:

Joseph Hannigan - Philadelphia PA

International Classification:

B21D 4104

US Classification:

29727

Abstract:

Apparatus for collapsing steam tubes for removal from a steam boiler includes a plurality of gripping arms for engaging the end of a steam tube in the wall of a steam boiler. The arms are mounted about a central axis for pivotal movement of the distal ends thereof toward and away from the steam tube. The tube is engaged by gripping fingers at the distal end of the arms for engaging the steam tube between the wall of the boiler and the flared end of the tube. The arms are pivoted inwardly toward the central axis by the camming action of a plate through which the arms extend. The plate bears against the arms and cams them toward the central axis. The plate is moved by an actuator mounted on a fluid driven piston within a cylinder.

US Patent:

49311875, Jun 5, 1990

Filed:

Feb 7, 1989

Appl. No.:

7/306950

Inventors:

James J. Derham - Ft. Washington PA
Joseph M. Hannigan - North Wales PA
Joseph Derham - Ft. Washington PA

Assignee:

Klenzoid, Inc. - Conshohocken PA

International Classification:

B01D 1504
C02F 158

US Classification:

210662

Abstract:

A cooling tower system and associated method is disclosed for controlling an aqueous coolant circulated through a cooling tower without requiring discharge of the coolant during recirculation. The coolant pumped from the cooling tower is filtered and monitored for characteristics. Generally acceptable levels of pH, temperature and TDS are maintained in the coolant to reduce the corrosive and scale-forming tendencies thereof and with those levels being maintained and monitored, the calcium content of the coolant is then adjusted in order to balance the Langelier Saturation Index (Sl) at a zero level. A computer is programmed to resolve control algorithms for Sl=0 and, using stored tabular data corresponding to the respective values of the monitored characteristics of pH, temperature, alkalinity and TDS, the computer calculates the value of calcium necessary to maintain a zero index. In the treatment of raw make-up water being supplied to the cooling tower system, a water softening or other like device for reducing calcium to zero is provided with a controlled by-pass for introducing raw water into the system thereby adjusting the calcium concentration in accordance with the determined zero index value.