Patents by Inventor Lloyd Thomas Akeley

Lloyd Thomas Akeley 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).

  • Pressure transducer with welded tantalum diaphragm
    Patent number: 4046010
    Abstract: A pressure transducer and method of manufacture is disclosed wherein a tantalum diaphragm is held in position in a pressure transducer by sandwiching the tantalum diaphragm between a stainless steel weld ring and the stainless steel body of the pressure transducer. The stainless steel weld ring is welded to the stainless steel body at a temperature above the melting point of the stainless steel but below the melting point of the tantalum whereby simultaneous to the welding of the weld ring to the body, a braze is created between the tantalum diaphragm and both the stainless steel weld ring and stainless steel body. This braze creates the required hermetic seal between the tantalum diaphragm and the stainless steel body. Additionally, an inert seal is provided between the pressure body of the transducer and the tantalum diaphragm disposed interior of the inner circumference of the stainless steel weld ring whereby process fluids which would otherwise erode the weld ring are isolated therefrom.
    Type: Grant
    Filed: November 12, 1976
    Date of Patent: September 6, 1977
    Assignee: Beckman Instruments, Inc.
    Inventor: Lloyd Thomas Akeley