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  • Patent number: 5035613
    Abstract: An orthodontic appliance for maloccluded teeth and an associated method of construction utilizes an elastomer base material comprised of a silicone elastomer composition. The elastomer composition, when in an uncured condition, possessses a sufficiently low viscosity so that the positioner can be formed in a low pressure injection molding process and which, when in a cured condition, possessses a relatively high resistance to tear.
    Type: Grant
    Filed: July 20, 1987
    Date of Patent: July 30, 1991
    Assignee: Great Lakes Orthodontics, Ltd.
    Inventors: Peter R. Breads, Gerard P. Abbatte, Stephen P. Warunek
  • Patent number: 4798534
    Abstract: A method of making a dental appliance of the type having a plastic body portion and auxiliary members which extend from the body portion. The method utilizes a dental model formed from an impression taken from the mouth of a patient and includes a step of positioning the auxiliary member on said model so that a portion of the auxiliary member is spaced from a surface of the model. A heated blank of thermoplastic material is then applied to the model and shaped to conform to the shape of the model. Because a selected portion of the auxiliary member is spaced from the model surface, the heated thermoplastic material flows around the selected portion during the shaping process. The selected portion of the auxiliary member is thereby substantially encapsulated in the thermoplastic material and, when the thermoplastic material is allowed to cool, the auxiliary member is securely anchored within the plastic material.
    Type: Grant
    Filed: October 24, 1986
    Date of Patent: January 17, 1989
    Assignee: Great Lakes Orthodontic Laboratories Inc.
    Inventor: Peter R. Breads
  • Patent number: 5055039
    Abstract: An orthodontic positioner appliance of elastomer base material is formed directly on the tooth coupling members during fabrication so as to assure accuracy of the appliance and compliance with the exact shape and placement of the members. A construction model is provided of the patient's teeth in a desired orientation, members are attached to the teeth in the model, and the positioner is formed by applying material to the model and directly to the members providing an exact adaptation of the material to the model including the members and providing an exact fit between the material and the members so as to eliminate any void between the members and the material to assure maximum purchase on the teeth but yet be easily removed by the patient.
    Type: Grant
    Filed: October 6, 1988
    Date of Patent: October 8, 1991
    Assignee: Great Lakes Orthodontics, Ltd.
    Inventors: Gerard P. Abbatte, Peter R. Breads, Stephen P. Warunek, Brian D. Willison
  • Patent number: 4856991
    Abstract: An orthodontic finishing positioner for maloccluded teeth to which are secured coupling members having portions protruding from the sides thereof, the positioner comprising an arcuate body of elastomer base material positioned about the teeth and coupling member of at least one dental arch and defining a recess for receiving teeth of at least one dental arch. The recess includes walls defining teeth-engaging surfaces shaped generally complementary to the surfaces of the teeth of the one dental arch when the teeth therein are positioned in a predetermined or ideal orientation. A series of indentations in the walls are disposed across the teeth-engaging surfaces, each indentation being shaped to nestingly accept a corresponding coupling member.
    Type: Grant
    Filed: May 5, 1987
    Date of Patent: August 15, 1989
    Assignee: Great Lakes Orthodontics, Ltd.
    Inventors: Peter R. Breads, Gerard P. Abbatte, Stephen P. Warunek
  • Patent number: 5059118
    Abstract: An orthodontic finishing positioner for maloccluded teeth to which are secured coupling members having portions protruding from the sides of the teeth includes a body constructed of an elastomer base material adapted to be operatively positioned about the teeth and coupling member of at least one dental arch of a patient. The positioner body is arcuate in shape and defines a recess for receiving teeth of at least one dental arch wherein the recess includes walls defining teeth-engaging surfaces shaped generally complementary to the surfaces of the teeth of the one dental arch when the teeth therein are positioned in a predetermined or ideal orientation.
    Type: Grant
    Filed: July 25, 1989
    Date of Patent: October 22, 1991
    Assignee: Great Lakes Orthodontics, Ltd.
    Inventors: Peter R. Breads, Gerard P. Abbatte, Stephen P. Warunek
  • Patent number: 5186623
    Abstract: An orthodontic finishing positioner for maloccluded teeth to which are secured coupling members having portions protruding from the sides of the teeth includes a body constructed of an elastomer base material adapted to be operatively positioned about the teeth and coupling members of at least one dental arch of a patient. The positioner body is arcuate in shape and defines a recess for receiving teeth of at least one dental arch wherein the recess includes walls defining teeth-engaging surfaces shaped generally complementary to the surfaces of the teeth of the one dental arch when the teeth therein are positioned in a predetermined or idential orientation.
    Type: Grant
    Filed: October 21, 1991
    Date of Patent: February 16, 1993
    Assignee: Great Lakes Orthodontics, Ltd.
    Inventors: Peter R. Breads, Gerard P. Abbatte, Stephen P. Warunek
  • Patent number: 4216372
    Abstract: A toaster chassis assembly for supporting heating element cards in an upstanding position in parallel relation, to define a bread-receiving slot therebetween, includes a horizontal base and end walls extending vertically upwardly from opposite ends of the base. The base defines a plurality of spaced slots for receiving tabs formed along the lower edges of the heating element cards for mounting the cards between the end walls and a plurality of tabular hooks extending from the base. Wire bread guards each comprising a plurality of vertical elements and an upper and lower horizontal element to form a grid, are mounted adjacent to the heating element cards to prevent engagement of bread slices being toasted with the heating element cards. The lower horizontal elements of the wire bread guards are received in the tabular hooks and the upper horizontal elements are received in slots formed along the upper edges of the end walls for supporting the bread guards.
    Type: Grant
    Filed: February 26, 1979
    Date of Patent: August 5, 1980
    Assignee: McGraw-Edison Company
    Inventor: Peter E. Huggler
  • Patent number: 4216689
    Abstract: Bread loaves 12 are fed by spiked conveyor 13 into a slice cutter 14 and then to a pocket 29 on an indexing turret 16, where the slices are impaled on parallel pins 31. When the turret intermittently rotates a pusher 34 strips the slice group from the pins, and they are transferred to a weighing conveyor 17. The output from the latter controls the feed rate to maintain the weight of each slice group at a predetermined value.
    Type: Grant
    Filed: July 6, 1978
    Date of Patent: August 12, 1980
    Inventor: Peter Suhling
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