Method of producing an exposure blade

Details Method of producing an exposure blade Method of producing an exposure blade

1987-10-06

1990-09-11

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

Making hole or aperture in article

295274, 29530, 264154, 264266, 264273, 264274, 264294, 264247, 26432811, 425112, 425121, 425290, 425298, 425DIG37, 425554, B29C 4514, B29C 4536, B29L 310

Patent

active

049561391

ABSTRACT:
A blade of an exposure control such as an iris control device or a shutter control device is provided for use in cameras. A sheet of a resin or metallic material configured as desired into the final blade form is placed in an injection molding machine which has a pin-forming cavity on one side of the sheet. The sheet is broken and penetrated at its portions where pins are to be formed and fixed, such that portions of the material of the sheet are deformed to project into the cavity. A molten resin is injected through a sprue formed on the opposite side of the sheet to the cavity so that the injected resin fills the cavity to form a pin in such a manner that the deformed and projected portion of the material of the sheet is embedded in the pin-forming resin. Another pin is formed on the other side of the sheet simultaneously with the first-mentioned pin in the same manner in the same die apparatus.

REFERENCES:
patent: 2688581 (1954-09-01), Stubbs
patent: 3077658 (1963-02-01), Wharton
patent: 3366512 (1968-01-01), Jammet
patent: 3890679 (1975-06-01), Simon
patent: 3952402 (1976-04-01), Mengeringhausen
patent: 4135297 (1979-01-01), Guttenberger et al.
patent: 4202091 (1980-05-01), Ohnishi
patent: 4230659 (1980-10-01), Sutch

Affiliated with

Also associated with

Rating

Method of producing an exposure blade does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of producing an exposure blade, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of producing an exposure blade will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1183426