Patents by Inventor John M. Larimer

John M. Larimer 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: 4565396
    Abstract: An opthalmic insertion device for quick and accurate insertion of contact lenses with minimum handling. A pneumatic insertion device comprises a main cylindrical body having a coil spring driven piston for pumping air fitted into and substantially filling cross sectionally a forward area of the main body cylinder, a hollow shaft axially slidable communicating the area behind the piston to an area within a soft rubber cup on the forward end of the said shaft, a buffer spring to limit the retraction of the hollow shaft into the cylinder, a cocking plunger fitted into and substantially filling cross sectionally a rear portion of the cylinder provides a means to compress the piston drive spring and is provided with a rearward biasing spring to automatically return the said cocking plunger to a rear position of the main body cylinder, a trigger device to hold said piston in the cocked position until a contact lens is ready to be inserted.
    Type: Grant
    Filed: March 11, 1985
    Date of Patent: January 21, 1986
    Inventor: John M. Larimer