Plastic and nonmetallic article shaping or treating: processes – With severing – removing material from preform mechanically,... – Punching article from sheet material
Patent
1984-12-06
1987-04-14
Lowe, James
Plastic and nonmetallic article shaping or treating: processes
With severing, removing material from preform mechanically,...
Punching article from sheet material
264161, 264163, 264268, 26427211, 26427218, 264279, B29C 3910
Patent
active
046577190
ABSTRACT:
A method of forming a cover sheet over an opening of a rotary electric device such as a trimmer capacitor or a variable resistor. The rotary device includes a rotor located in a housing or case which is accessible through the opening and adjustable by a screwdriver or similar tool. To form the cover sheet, pliable resin is extended while in an unhardened state to form a film. The case is pressed against the film to introduce a part of the film into the opening. Then the resin material forming the film is allowed to partially harden before the case is separated from the film. As a result, part of the film remains in the opening of the case to form the cover sheet. As the film is completely hardened a functional cover sheet over the opening is produced.
REFERENCES:
patent: 3346435 (1967-10-01), Beck
patent: 3354603 (1967-11-01), Katzen et al.
patent: 4079567 (1978-03-01), Spruyt et al.
patent: 4421705 (1983-12-01), Hatakeyama et al.
Translation of 55-148115 (Mitsubishi) Japan.
Lowe James
Murata Manufacturing Co. Ltd.
LandOfFree
Method of forming cover sheet in opening of rotary electric devi 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 forming cover sheet in opening of rotary electric devi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of forming cover sheet in opening of rotary electric devi will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1784177