×

Dispenser for flexible sheet material and a perforating mechanism adapted to be used therein

  • US RE28,911 E
  • Filed: 09/30/1974
  • Issued: 07/20/1976
  • Est. Priority Date: 01/06/1971
  • Status: Expired due to Term
First Claim
Patent Images

1. In a dispenser for flexible sheet material including, a chassis adapted to be attached to a wall, means operatively connected to said chassis for rotatably supporting a roll of flexible sheet material, means operatively connected to said chassis for guiding a web of flexible sheet material from said roll to a position to be grasped by a user so that the user may pull the web out of the dispenser, and a mechanism operatively connected to said chassis for perforating said web at intervals therealong to divide the web into individual sheets, the improvement wherein said perforating mechanism comprises, a rotatably mounted roller, a rotatably mounted knife positioned adjacent said roller and having a radially outward portion defining a cutting edge for perforating the web as the web passes between the roller and the knife, said roller being operatively connected to said knife for synchronous rotation therewith and having a slot therein for receiving said radially outward knife portion as the knife rotates past the roller, and means associated with said knife for orienting said cutting edge substantially in the direction in which said radially outward knife portion moves with respect to the web during the entrance of said portion into said slot so that when the portion enters the slot, the cutting edge will effectively perforate the web, and wherein said dispenser further comprises a mechanism associated with said perforating mechanism for stopping the rotation of said knife and said roller and thus arresting the movement of the web after a predetermined length of the web has been withdrawn from the dispenser, and a variable timing means associated with said stop mechanism for controlling the period of time during which the stop mechanism is effective to stop the rotation of the knife and the roller.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×