John D Vandervort

40868710, May 2, 1978

May 18, 1977

5/798176

Robert L. Rydeen - St. Paul MN
John D. Vandervort - Cottage Grove MN

Minnesota Mining and Manufacturing Company - St. Paul MN

G03G 1320
G03G 1520

118 60

Improved lubricator roll for uniformly applying low viscosity lubricant to surfaces such as fusing rolls used in copying or reproduction machines. The roll has a longitudinal array of apertures for dispensing low viscosity lubricant contained in the roll and a longitudinal, interior strip which scoops lubricant into an annular reservoir formed between the strip and the roll. The annular reservoir provides a head on the lubricant near the dispensing apertures so that lubricant is dispensed therefrom over approximately three-fourths of each revolution, regardless of the level of lubricant in the roll. The reservoir-forming strip also modulates the amount of lubricant present in the reservoir so that the roll apertures alternately dispense oil and vent the roll.

40403831, Aug 9, 1977

Mar 4, 1976

5/663682

John D. Vandervort - Cottage Grove MN

Minnesota Mining and Manufacturing Company - St. Paul MN

B05C 1100

118 60

Apparatus for uniformly applying toner-release lubricant to, and for cleaning, heated fusing rolls used in copying or reproduction machines. The apparatus comprises a lubricant-dispensing roll containing an internal supply of lubricant; an applicator roll for transferring lubricant from the dispenser roll to the fuser roll and for wiping the fuser roll; and a spreader roll for evenly distributing the lubricant on the applicator roll prior to the completion of transfer to the fuser roll. The dispenser roll is designed to (1) dispense lubricant uniformly and substantially continuously over approximately 270. degree. of each revolution, regardless of the oil level therein, and (2) preclude the dispensing of lubricant when not in use.

41142365, Sep 19, 1978

Jul 28, 1977

5/819764

John D. Vandervort - Cottage Grove MN

Minnesota Mining & Manufacturing Company - St. Paul MN

E05D 1110

16142

The hinge structure which permits the platen cover to be forced toward the platen when positioned thereover and which will hold the cover in any desired positon between about 20. degree. and 90. degree. with respect to the platen. The hinge structure comprises a leaf spring on the machine frame which is urged into contact with a cam surface connected to the cover which cam surface in cooperation with the leaf spring provides a torsional force about the cover axis to counterbalance the weight of the cover and a frictional force which will maintain the cover in its desired fixed position.