The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 07, 1982
Filed:
Jan. 09, 1981
Claude Perraudin, Meudon, FR;
Edmond Amarge, Pringy, FR;
Jean P Guiho, Le Mesnil St. Denis, FR;
Jean C Horiot, St. Jullien, FR;
Gerard Taniel, Les Essarts Le Roi, FR;
Georges Viel, Orsay, FR;
Jean P Brethon, Orsay, FR;
C.G.R.-MeV, Commissariat a l'Energie Atomique, Paris, FR;
Abstract
An irradiation apparatus for obtaining an irradiation beam having precise and easily adjustable dimensions. This apparatus comprises more particularly a secondary collimation device having an axis Y--Y, removably fixed to the mobile arm of the irradiation apparatus and comprising a conical pot, two pairs of frames which support collimating plates and are movable about shafts fixed to said conical pot, each of said frames being connected to said conical pot by means of a compass system formed from legs hinged together about shafts. With said frames are associated mobile antipenumbra plates whose position is checked by means of a feeler system.