Patents Assigned to Promisewell Company Limited
  • Leaf spring hinges for eyeglasses
    Patent number: 8308289
    Abstract: A leaf spring hinge comprising a leaf spring member that is integrally formed with or fixedly connected to a lug or a temple is provided. The leaf spring member is provided at least with a leaf spring suspended and bent from a base. The leaf spring is bent in the form of an R-letter or U-letter. The leaf spring hinge has simple structure and reliable resilience, and is solid, durable and easy to manufacture.
    Type: Grant
    Filed: August 26, 2010
    Date of Patent: November 13, 2012
    Assignee: Promisewell Company Limited
    Inventor: Shouye Niu