MARVIN P SIRKIS
Dentist at Executive Blvd, Rockville, MD

License number
DC DEN2455
Issued Date
Jan 1, 1988
Expiration Date
Dec 31, 1997
Category
DENTISTRY
Type
DENTIST
Address
Address
6257 Executive Blvd, Rockville, MD 20852

Professional information

Marvin Sirkis Photo 1

Intra Packet Film Processing Method And Apparatus

US Patent:
3950172, Apr 13, 1976
Filed:
Dec 10, 1973
Appl. No.:
5/423568
Inventors:
Dwin R. Craig - Gaithersburg MD
Marvin Phillip Sirkis - Rockville MD
Assignee:
Insite Corporation - Gaithersburg MD
International Classification:
G03C 530, G03C 516, G03B 4116
US Classification:
96 61M
Abstract:
An intra packet film processing method and apparatus which includes the injection of a monobath film processing solution into a film packet by means of a hypodermic needle so as to uniformly coat the emulsion surfaces of the film while remaining in a light-tight condition in the packet. Since the film in most instances has emulsion surfaces on both sides thereof hypodermic needles are inserted from opposite sides so as to uniformly coat both surfaces of the film. The film is supported so that its outer ends may flex away from the needle as the needle is caused to penetrate the covering surfaces of the film. The flexing of the film reduces the attack angle of the needle and allows the tip of the needle to slide along the film surfaces without penetrating the film. Either the needles or the film are rotated about an axis extending through the plane of the film so as to engage both needles with opposite surfaces of the film packet to uniformly penetrate the covering materials of the packet.