Patents by Inventor Leonard M. Volin

Leonard M. Volin 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: 7300371
    Abstract: A diverting roller has a roller body having a longitudinal axis. A plurality of pairs of pulleys are rotatably mounted on the roller body adjacent a circumference of the roller body. An endless belt is looped around each of the pairs of pulleys in such a fashion that each belt has substantial portion oriented in a direction parallel to the longitudinal axis of the roller body. The travel of belts around their respective pulleys permits a non-normal angle of incidence of the web to the longitudinal axis. The non-normal angle of incidence and the travel of the belts permit the axial movement of a web of indefinite length material when the web is in contact with belts of the diverting roller. One or more of the diverting rollers may be employed in a system for inverting a moving web of indefinite length material.
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: November 27, 2007
    Assignee: 3M Innovative Properties Company
    Inventors: Leonard M. Volin, Mark J. Zach
  • Patent number: 6145777
    Abstract: A tail gap winder transfers a web from a first core to a second core by, immediately after the web is cut, pivoting the idler roller to lengthen the distance between the idler roller and the rotating drum to create a gap between the cut ends of the web; removing the first core from the rotating drum surface as the gap passes under the first core location; moving the second core into contact with the rotating drum surface; and winding the incoming cut edge around the second core. The idler roller pivots toward the rotating drum to decrease the distance between the idler roller and rotating drum and to take up the extra length of web during the winding portion of the operating cycle.
    Type: Grant
    Filed: April 28, 1999
    Date of Patent: November 14, 2000
    Assignee: 3M Innovative Properties Company
    Inventors: Mark J. Zach, Leonard M. Volin, Gary J. Goth, Jeffrey J. Fontaine
  • Patent number: 5632849
    Abstract: The winding system includes several rollers and a rotating drum, around which the web winds before being wound on a core. A cutting and tabbing assembly cuts the web against the rotating drum and cuts and applies the tab on the web in registration with the cut end of the web. The cutting and tabbing assembly includes a wheel, a knife mounted on the wheel, and a tab bar mounted on the wheel adjacent the knife. During the winding of the web on the core the proper amount of tab paper is unwound and moved toward the knife to cut and grab the tab. Then, the knife and tab bar rotate to cut the web while the tab bar applies the tab onto the cut end of the web.
    Type: Grant
    Filed: January 21, 1992
    Date of Patent: May 27, 1997
    Assignee: Minnesota Mining and Manufacturing and Company
    Inventors: Harvey D. Ogren, James L. Albrecht, Leonard M. Volin
  • Patent number: 5379962
    Abstract: A continuous log roll winder cuts and transfers on the fly without stopping the winding process. The web passes around a rotating drum with the adhesive side out and travels to a wind-up spindle. A knife cuts the web against the surface of the drum. By heating the knife to temperatures above 300.degree. F., the web and adhesive does not stick to the knife; the adhesive does not accumulate on the knife; and the adhesive does not transfer through the cut in the web backing and deposit on the rotating drum.
    Type: Grant
    Filed: January 21, 1992
    Date of Patent: January 10, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: James L. Albrecht, Leonard M. Volin
  • Patent number: 5346150
    Abstract: The tail gap winder transfers a web from a first wind-up spindle to a second wind-up spindle by, immediately after the web is cut, pivoting the idler roller to lengthen the distance between the idler roller and the rotating drum to create a gap between the cut ends of the web; moving the first wind-up spindle away from the rotating drum surface as the gap passes under the first wind-up spindle location; moving the second wind-up spindle into contact with the rotating drum surface as the first wind-up spindle moves away; and winding the incoming cut edge around the second wind-up spindle. The idler roller pivots toward the rotating drum to decrease the distance between the idler roller and rotating drum and to take up the extra length of web during the winding portion of the operating cycle.
    Type: Grant
    Filed: March 26, 1993
    Date of Patent: September 13, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Leonard M. Volin