Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1974-02-21
1976-05-11
Stolwein, Walter
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
250562, 250209, 2091117T, 356239, G01N 2132
Patent
active
039566366
ABSTRACT:
The present invention provides a method and apparatus for inspecting and sorting buttons and the like. The inspection means includes a main chamber having a first aperture opening with a diameter substantially equal to the diameter of the buttons to be inspected and a center on the optical axis of said chamber. The inspection means and/or the sorting means of the invention includes means for aligning each button in a rapid succession of buttons at the first aperture opening. A light source is positioned to direct a beam of light through a button stationed at the aperture and along the optical axis of the chamber. Positioned within the main chamber and on the optical axis thereof is a light reflecting means for reflecting the transmitted beam of light. Preferably, four light receiving members, each member having a first and second end and being spaced apart 90.degree. from two other members, are positioned in a plane normal to said optical axis. The first end of each member comprises a second aperture positioned adjacent said light reflecting means for receiving light therefrom. The second end of each of said members includes a photosensor means for detecting the reflected light through said second aperture to produce an output signal. A logic circuit is electrically connected to each of the photosensor means for comparing the output signals and providing an inspection signal. Preferably, a sorting means is provided in combination with the inspection apparatus and responsive thereto for rejecting or accepting inspected buttons in accordance with the inspection signal provided.
REFERENCES:
patent: 2332308 (1943-10-01), Dresser
patent: 2351702 (1944-06-01), Peterson
patent: 2967947 (1961-01-01), Flook, Jr.
patent: 3191773 (1965-06-01), Wyman
patent: 3292785 (1966-12-01), Calhoun
patent: 3316411 (1967-04-01), Linderman
Koppers Company Inc.
Massung Howard G.
Stolwein Walter
Yeager Robert D.
LandOfFree
Method and apparatus for inspecting and sorting buttons 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 and apparatus for inspecting and sorting buttons, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for inspecting and sorting buttons will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1305386