Patents by Inventor Noel McNeill Fisher

Noel McNeill Fisher 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).

  • Patent number: 3951234
    Abstract: A pin bearing lubrication system is described which comprises a pin bearing having a bush recessed each end thereof; a sealing ring disposed in each recess in the bush; a bearing pin passing through the bush and forming seals with the sealing rings; a reservoir for lubricant formed in the bearing pin; a duct formed the bearing pin connecting the reservoir with bearing surfaces formed between the bush and the bearing pin; and a diaphragm movable in and relative to the reservoir, the arrangement being such that the diaphragm is acted upon by the pressure prevailing outside the bearing pin and by a biasing spring so as to urge the diaphragm in a direction tending to reduce the volume of the reservoir. Such a pin bearing lubrication system may be incorporated in, for example, a chain of dredge buckets which are hinged together by pin bearings.BACKGROUND OF THE INVENTION1.
    Type: Grant
    Filed: January 30, 1975
    Date of Patent: April 20, 1976
    Assignee: Associated Mines (Malaya) Sendirian Berhad
    Inventor: Noel McNeill Fisher