Patents by Inventor Frederick M. Coory

Frederick M. Coory 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: 5404596
    Abstract: A plunger or scraper for use in moving waste substances, mainly food, into and down a disposal outlet. This outlet can be a type connectable to a waste disposal unit. The plunger also can be use to sit in the drain while the unit is in use, with water running through the plunger, or it can be used as a plug. The plunger comprises a handle, two or more scraper blades, and two collars, the lower of which is slotted. Each collar is fitted with a replaceable washer for sealing the plunger in the drain. The plunger, with the exception of the washers, is integrally formed.
    Type: Grant
    Filed: June 1, 1994
    Date of Patent: April 11, 1995
    Inventor: Frederick M. Coory