Patents by Inventor John F. Baldry

John F. Baldry 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: 4357975
    Abstract: An anti-skid tire chain comprising a pair of parallel side chains, a series of traction rings extending medially between the side chains, and a network of connector chains interconnecting the traction rings with the side chains and with one another is characterized in that the connector chains are interconnected in threes by triradial connector plates. Each triradial connector plate consists of three plate elements welded together, each plate element providing a pair of opposite end portions, subtending an angle of 120.degree. to one another and an arcuate mid-portion defining a convex cylindrical surface, the plate elements being mutually welded together at the convex surfaces thereby defining a symmetrical triradial configuration providing three radially extending pairs of parallel arms, each pair of arms defining a clevis for receiving an end link of a respective connector chain, and including a removable clevis pin for retaining the end link.
    Type: Grant
    Filed: October 2, 1980
    Date of Patent: November 9, 1982
    Assignee: Dominion Chain Inc.
    Inventor: John F. Baldry