Patents by Inventor David C. Baumann

David C. Baumann 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).

  • Piloted assembly
    Patent number: 5869914
    Abstract: Two housing members and the stator are precision machined on diameters and assembled such that the machined diameters coact to locate the members which then serve as a reference location for the subsequently assembled parts. The present invention reduces the number of critical machined features compared to a piloted assembly.
    Type: Grant
    Filed: October 24, 1997
    Date of Patent: February 9, 1999
    Assignee: Carrier Corporation
    Inventors: David C. Baumann, James W. Bush
  • Method of assembling a motor
    Patent number: 5758404
    Abstract: Two housing members and the stator are precision machined on diameters and assembled such that the machined diameters coact to locate the members which then serve as a reference location for the subsequently assembled parts. The present invention reduces the number of critical machined features compared to a piloted assembly.
    Type: Grant
    Filed: November 27, 1996
    Date of Patent: June 2, 1998
    Assignee: Carrier Corpooration
    Inventors: David C. Baumann, James W. Bush
  • Method of manufacturing a multipiece eccentric shaft
    Patent number: 5247736
    Abstract: A drive shaft having a main bearing portion, formed by metal forging, casting or powdered metallurgy, and having coupled thereto a rotor stub portion comprising a steel tube fixedly secured to the main bearing portion, such as by press fitting, friction or laser welding. The rotor stub portion of the drive shaft contains an insert formed with suitable oil hole passages to deliver oil through the rotor stub portion to any desired location along this portion of the drive shaft.
    Type: Grant
    Filed: June 10, 1991
    Date of Patent: September 28, 1993
    Assignee: Carrier Corporation
    Inventors: Howard H. Fraser, Jr., David C. Baumann
  • Slider block for a scroll compressor having edge loading relief under load
    Patent number: 5174738
    Abstract: The outer surface of a slider block increases radially with increasing distance from the crankshaft for at least a portion of its height. As a result when the drive pin of the crankshaft deflects under load the slider block moves therewith as a unit. The surface of the slider block maintains an essentially uniform oil film thickness over an extended area due to its shape.
    Type: Grant
    Filed: December 11, 1991
    Date of Patent: December 29, 1992
    Assignee: Carrier Corporation
    Inventors: David C. Baumann, Edward A. Tomayko, James W. Bush, Antonio Prince
  • High precision tool holder
    Patent number: 5141370
    Abstract: A quill is rotated in a spindle and carries a tool which is rotated with the quill about a common axis. The tool is held in a bore in the quill by a gland or sleeve that forms a portion of the bore and is expanded into contact with the tool by hydraulic pressure produced by one or more threaded pistons acting on a closed volume.
    Type: Grant
    Filed: December 6, 1990
    Date of Patent: August 25, 1992
    Assignee: Carrier Corporation
    Inventor: David C. Baumann
  • Multipiece eccentric shaft
    Patent number: 5026262
    Abstract: A crankshaft having a main bearing portion, formed by metal forging, casting or powdered metallurgy, and having coupled thereto a rotor stub portion comprising a steel tube fixedly secured to the main bearing portion, such as by press fitting, friction or laser welding. The rotor stub portion of the crankshaft is formed with suitable oil hole passages to deliver oil through the rotor stub portion to any desired location along this portion of the crankshaft.
    Type: Grant
    Filed: November 28, 1989
    Date of Patent: June 25, 1991
    Assignee: Carrier Corporation
    Inventors: David C. Baumann, Howard H. Fraser, Jr.