Patents Assigned to Acro, Inc.
  • Patent number: 4247975
    Abstract: A pin is connected between the two legs of the game racket frame in the handle portion near the end. This assembly is placed in a mold with an insert between the legs abutting the pin and initially effectively blocking any string from being looped around the pin and emerging through the bottom of the handle portion. Handle molding material is introduced into the mold to form the handle. The material around the pin is then routed out forming a channel open at the bottom of the handle portion for receiving the handle string that may be readily looped about the pin.
    Type: Grant
    Filed: April 2, 1979
    Date of Patent: February 3, 1981
    Assignee: Acro, Inc.
    Inventor: Mark L. Robinson
  • Patent number: 4180264
    Abstract: A grip is placed inside a mold and the grip and mold are filled with a foam material. The handle pieces of a metal sport racket are placed inside the grip, so that as the foam rises and hardens, the foam becomes a handle around the handle pieces with the grip covering the handle.
    Type: Grant
    Filed: April 25, 1977
    Date of Patent: December 25, 1979
    Assignee: Acro, Inc.
    Inventor: Mark L. Robinson
  • Patent number: 4161813
    Abstract: A pin is connected between the two legs of the game racket frame in the handle portion near the end. This assembly is placed in a mold with an insert between the legs abutting the pin and initially effectively blocking any string from being looped around the pin and emerging through the bottom of the handle portion. Handle molding material is introduced into the mold to form the handle. The material around the pin is then routed out forming a channel open at the bottom of the handle portion for receiving the handle string that may be readily looped about the pin.
    Type: Grant
    Filed: February 15, 1978
    Date of Patent: July 24, 1979
    Assignee: Acro, Inc.
    Inventor: Mark L. Robinson
  • Patent number: 3990700
    Abstract: A game racket with adjustable string tension includes a yoke in the throat portion of the racket to which main strings may be secured that engages opposed inside portions of the frame in the throat at upper and lower opposed pairs of points. A tension member secured between the yoke and handle portion of the racket is adjustable in length as an adjusting screw is rotated to control the position of the yoke in the throat and the main and cross string tension.
    Type: Grant
    Filed: August 25, 1975
    Date of Patent: November 9, 1976
    Assignee: Acro, Inc.
    Inventor: Mark L. Robinson
  • Patent number: D850280
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: June 4, 2019
    Assignee: ACRO INC.
    Inventor: Tokujin Yoshioka
  • Patent number: D870560
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: December 24, 2019
    Assignee: ACRO INC.
    Inventor: Tokujin Yoshioka
  • Patent number: D895432
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: September 8, 2020
    Assignee: ACRO INC.
    Inventor: Tokujin Yoshioka