Patents Assigned to Twist2It, Inc.
  • Drive mechanism for oscillatory abrasion and polishing tool
    Patent number: 6848451
    Abstract: A transmission for changing rotary motion into angularly reciprocating motion and adapted to be mounted on the output end of a power unit of the type having a rotary drive output and used to drive a tool. The transmission is comprised of a support member, a driving resinous member supported by the support member for rotary motion, and a driven resinous member supported by the support member for reciprocating angular movement by the support member. The transmission subassembly is formed by the driving resinous member, driven resinous member and support member and adapted to be mounted on the output end of the power unit with a rotary drive output mechanically coupled to the driving resinous member. A driving cam surface is disposed on a portion of the driving resinous member. A driven cam surface is disposed on a portion of the driven resinous member. The driving cam surface is in contact with the driven cam surface during at least a portion of the cycle of rotation of the driving cam surface.
    Type: Grant
    Filed: June 18, 2002
    Date of Patent: February 1, 2005
    Assignee: Twist2It, Inc.
    Inventors: Robert T. Postal, Robert P. Wallace
  • Drive mechanism for oscillatory dental tool with improved bushing
    Patent number: 6409507
    Abstract: A transmission for changing rotary motion into angularly reciprocating motion and adapted to be mounted on the output end of a dental power unit of the type having a rotary drive output and used to drive a dental tool. The transmission is comprised of a support member, a driving resinous member supported by the support member for rotary motion, and a driven resinous member supported by the support member for reciprocating angular movement by the support member. The transmission subassembly is formed by the driving resinous member, driven resinous member and support member and adapted to be mounted on the output end of the dental power unit with a rotary drive output mechanically coupled to the driving resinous member. A driving cam surface is disposed on a portion of the driving resinous member. A driven cam surface is disposed on a portion of the driven resinous member.
    Type: Grant
    Filed: October 3, 2000
    Date of Patent: June 25, 2002
    Assignee: Twist2It, Inc.
    Inventors: Robert T. Postal, Robert P. Wallace
  • Drive mechanism for oscillatory dental tool
    Patent number: 6247931
    Abstract: A transmission for changing rotary motion into angularly reciprocating motion and adapted to be mounted on the output end of a dental power unit of the type having a rotary drive output and used to drive a dental tool. The transmission is comprised of a support member, a driving resinous member supported by the support member for rotary motion, and a driven resinous member supported by the support member for reciprocating angular movement by the support member. The transmission subassembly is formed by the driving resinous member, driven resinous member and support member and adapted to be mounted on the output end of the dental power unit with a rotary drive output mechanically coupled to the driving resinous member. A driving cam surface is disposed on a portion of the driving resinous member. A driven cam surface is disposed on a portion of the driven resinous member.
    Type: Grant
    Filed: April 8, 1999
    Date of Patent: June 19, 2001
    Assignee: TWIST2IT, Inc.
    Inventors: Robert T. Postal, John Laverack, George E. Riehm, Edward Gilchrest, Tom Benz, Robert P. Wallace