Patents by Inventor Daniel J. Angeli

Daniel J. Angeli has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Enhanced heat exchange tube
    Patent number: 6164370
    Abstract: A heat exchange tube for air conditioning and refrigeration applications is internally enhanced with helically arranged fins. The fins are separated from adjacent fins by a trough. The heat transfer coefficient is increased by forming the fins with a height-to-trough width ratio, h:T, of from 1.3:1 to 2.5:1. A further gain in heat transfer coefficient is achieved by fins having a normalized height (fin height/tube inside diameter) of at least 0.02.
    Type: Grant
    Filed: September 24, 1998
    Date of Patent: December 26, 2000
    Assignee: Olin Corporation
    Inventors: Peter W. Robinson, Brian C. Stacks, Daniel J. Angeli, Phillip J. Campbell, Myron R. Randlett, Ralph L. Webb
  • Method of manufacturing a heating exchange tube
    Patent number: 5388329
    Abstract: A method for the manufacture of an enhanced heat exchange tube, in which the internal surface area is increased by either minimizing the apex angle of internal fins or increasing the fin height. The fins are formed by annealing a metallic strip while inhibiting recrystallization grain growth, texturing metallic strip, deforming the textured metallic strip into a generally circular configuration and bonding opposing edges of the strip together to form a length of tube.
    Type: Grant
    Filed: July 16, 1993
    Date of Patent: February 14, 1995
    Assignee: Olin Corporation
    Inventors: Myron R. Randlett, Daniel J. Angeli, Ralph L. Webb
  • Method of forming a nucleate boiling surface by a roll forming
    Patent number: 5351397
    Abstract: A nucleate boiling surface is formed on at least one side of a strip by roll forming. A first pattern of grooves separated by ridges in the form of a double helix is rolled into a strip. A second pattern of more shallow grooves is then machined into the ridges. The ridges are then deformed so that the fin ends extend over the first pattern of grooves forming subsurface channels. Concomitantly, the second pattern of grooves forms a plurality of pores intersecting the subsurface channels.
    Type: Grant
    Filed: May 13, 1993
    Date of Patent: October 4, 1994
    Assignee: Olin Corporation
    Inventor: Daniel J. Angeli