Richard Dean Podvin

US Patent:

39444570, Mar 16, 1976

Filed:

Aug 29, 1974

Appl. No.:

5/501609

Inventors:

Richard T. Podvin - Fridley MN
Thomas F. Look - New Brighton MN

Assignee:

Minnesota Mining and Manufacturing Company - St. Paul MN

International Classification:

B29H 1702
B29H 2102

US Classification:

156405

Abstract:

A device including two head assemblies for applying parallel lengths of elastic reflex-light reflective strip material in a controlled stretched condition around the outer surface of a tire casing rotated past the head assemblies. Each head assembly includes an applying wheel and a mechanism for advancing an end of a supply length of the strip material from a cutting mechanism to the applying wheel as the device moves the applying wheel to press the strip material against the moving tire casing and apply the same while the assembly provides a regulated tension in the strip material being applied. The device also includes means for sensing the end of an applied length of strip material as it returns toward the applying station, and for operating the severing mechanism to provide a predetermined overlap for the ends of the strip material applied around the tire casing.

US Patent:

40509710, Sep 27, 1977

Filed:

Feb 19, 1976

Appl. No.:

5/659234

Inventors:

Wayne R. Verkins - St. Anthony MN
Richard T. Podvin - Fridley MN
Karl Frederick Rist - Oakdale MN

Assignee:

Minnesota Mining and Manufacturing Company - St. Paul MN

International Classification:

B65B 700

US Classification:

156 69

Abstract:

A device for applying lengths of a heat sealable film over the open ends of cups. The device includes means which engage the end of a supply length of the film which is coiled in a cartridge, pull a predetermined length of the film from the cartridge, move the cup and predetermined length of film into engagement, heat fuse the film to the lip of the cup, and cut the fused length of film from the supply length at the cartridge.

US Patent:

40199452, Apr 26, 1977

Filed:

Mar 10, 1976

Appl. No.:

5/665411

Inventors:

Thomas F. Look - New Brighton MN
Richard T. Podvin - Fridley MN
Carlyle A. Weigel - Maplewood MN

Assignee:

Minnesota Mining and Manufacturing Company - St. Paul MN

International Classification:

B29H 1720
B29H 2102

US Classification:

156405

Abstract:

A device including means for removing a protective liner from elastic reflex-light reflective strip material, means for applying a length of the strip material to a tire casing, and means for separating the applied length from a supply length of the strip material. The means for removing the liner includes means in driving engagement with the liner, the speed of which can be varied via rotation of a helical strip to match the rate of strip application. Rotation of the helical strip is caused by movement along the strip of a carriage on which the liner is separated from the strip, which movement of the carriage is caused by the accumulation or decrease in the amount of liner between the carriage and liner drive means when the ratio of liner movement to strip movement increases or decreases. The means for separating the applied length of strip material includes means for perforating the strip material at a location related to the leading end of the applied length, and means activated after the strip material is applied at the perforation for clamping the strip material in the device and pulling the supply length of strip material away from the applied length so that they separate at the perforation.

US Patent:

40035255, Jan 18, 1977

Filed:

Jul 14, 1975

Appl. No.:

5/595397

Inventors:

Richard T. Podvin - Fridley MN
Thomas F. Look - New Brighton MN

Assignee:

Minnesota Mining and Manufacturing Company - St. Paul MN

International Classification:

B65H 1702
B65H 2320
B65H 7502

US Classification:

242 55

Abstract:

A device adapted for supporting a high inertia spool of stretchable strip material which strip material is withdrawn from the spool at varying rates by a strip applicating machine. The device includes a member which guides a length of the strip material being withdrawn. The guide member is adapted to be pivoted by tension in the strip material being withdrawn, and when pivoted activates a variable speed motor which rotates the spool to unwind the strip and maintain tension in the strip below an acceptable value. The motor is coupled to the spool through a worm drive which brakes rotation of the spool when the motor is de-energized to restrict over-running of the spool after tension in the strip is decreased.

US Patent:

55315003, Jul 2, 1996

Filed:

Aug 5, 1994

Appl. No.:

8/286459

Inventors:

Richard T. Podvin - Fridley MN

International Classification:

F41H 700

US Classification:

296152

Abstract:

A bullet-proofing panel for attachment to the exterior door surfaces of a police cruiser or the like comprising an outer polymeric skin having a contour corresponding to the contour of the sheet metal of the vehicle's doors. The polymeric skin member when affixed to the outer sheet metal panels of the vehicle's doors defines a predetermined space or pocket therebetween which contains a barrier member, preferably a woven KEVLAR. RTM. material, capable of stopping bullets from practically all handguns. Because the outer polymeric skin can be shaped to follow the contours of the original vehicle and painted to match, the bullet-proof panel does not detract from the overall ornamental appearance of the vehicle.