Patents by Inventor Melvin D. Clark

Melvin D. Clark 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: 5257577
    Abstract: An apparatus which collects recyclable refuse in sorted compartments. Through either automatic sensors or through an operator panel, the apparatus determines the contents of the refuse and directs it to the proper compartment or container. In this manner, recyclable material such as aluminum cans, glass bottles, plastics, etc. are easily sorted to encourage the recycling of this material. Further, periodically, the refuse within the compartments are compacted and disinfected to reduce handling requirements and odors.
    Type: Grant
    Filed: June 23, 1992
    Date of Patent: November 2, 1993
    Inventor: Melvin D. Clark
  • Patent number: 4184819
    Abstract: A speed sensor is attached to the output shaft of the rotary vane air motor. The speed sensor includes a body member which is pivotally mounted at one end on the output shaft for movement about an axis parallel to the shaft axis. The opposite end of the body member is biased into engagement with a locking pin. So long as the shaft of the air motor does not exceed a threshold speed, the body member remains in the described position. Upon exceeding a threshold speed, the body member disengages from the locking pin due to centrifugal force acting thereon and then engages a movable shutter. In this manner, the shutter is moved by the body member to close air flow passages to the air motor.
    Type: Grant
    Filed: January 23, 1978
    Date of Patent: January 22, 1980
    Assignee: The Aro Corporation
    Inventor: Melvin D. Clark
  • Patent number: 4135602
    Abstract: A muffler is integrally incorporated with a pneumatic tool by cooperating with the tool housing intermediate the air exhaust chamber for the air motor and atmosphere. An inwardly dished muffler shell includes an exhaust inlet for receipt of exhaust air from the air motor. The shell is selectively positionable and may be combined with screen and additional muffler material as well as a retaining plate in any of a number of combinations to provide distinctive muffling characteristics for the air tool.
    Type: Grant
    Filed: May 20, 1977
    Date of Patent: January 23, 1979
    Assignee: The Aro Corporation
    Inventor: Melvin D. Clark