RICHARD E GULBRANDSEN
Engineering in Beverly Farms, MA
License number
Massachusetts 11716
Issued Date
Dec 22, 1959
Expiration Date
Jun 30, 1990
Type
Mechanical Engineer
Address
Address
Beverly Farms, MA 01915
Professional information
Automatic Film Cassette Changing Apparatus For Use In Automatic Photostudio
US Patent:
4091397, May 23, 1978
Filed:
Mar 14, 1977
Appl. No.:
5/777512
Inventors:
Richard E. Gulbrandsen - Beverly MA
Assignee:
Polaroid Corporation - Cambridge MA
International Classification:
G03B 1910, G03B 2900
US Classification:
354 81
Abstract:
A photobooth and indexing system that includes a square frame having a motor driven film pack conveyor disposed about its periphery. The conveyor comprises 22 trays; 21 hold film packs and one holds a dummy pack. When a tray is indexed into position under the motorized film pack support, a ram lifts the pack up to an exposure position. A motorized support includes a rotatory solenoid operated pack, a pair of motor driven rollers and a film deflector for spread control. A logic system causes the dark slide to be automatically ejected into a film delivery chute. After 10 exposures, the logic causes the ram to be lowered thereby returning the empty pack to the underlying tray. The conveyor is indexed one tray position and the procedure is repeated. When the last tray arrives at the ram station, the dummy pack is elevated by the ram causing the logic to inhibit further operation of the photobooth until it has been reloaded with fresh film.
Flexible Disk Cassette
US Patent:
4814926, Mar 21, 1989
Filed:
Sep 28, 1987
Appl. No.:
7/101995
Inventors:
Richard Gulbrandsen - Beverly MA
Assignee:
Polaroid Corporation - Cambridge MA
International Classification:
G11B 23033
US Classification:
360133
Abstract:
A flexible disk cassette is provided and includes improved structure for stabilizing flutter of the disk upon rotation of the latter within the cassette, particularly at the access slot where the disk may be coupled to read/write heads for data recording or reproduction. The cassette includes a flexible data storage disk coated on both sides with a data storage recording medium and a pair of cleaning liners each positioned on a respective side of and in selective contact with the disk. The disk, sandwiched between the liners, is positioned in the cassette between a pair of spaced-apart covers bonded to one another. Respective radially extending access slots are provided in the covers to provide access of the read/write heads to the data storage medium on the disk. Positioned adjacent each radial edge of the access slot and facing the respective liner is a flat-surfaced, raised portion or land. Respective pluralities of spaced apart, radially extending ribs of uniform height are formed on the inside surface of each cover in opposed, interdigitated relation, the respective planes of the surfaces of each plurality of ribs being spaced apart to accommodate the liners and disk while positioning the liners in selective contact with the disk to effect stabilization while maintaining torque necessary to rotate the disk at an acceptable level.