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:
Jan. 30, 2001
Filed:
Oct. 07, 1998
Andreas Rack, Hanau, DE;
Peter Sauer, Schl{umlaut over (u)}chtern, DE;
Stefan Szellas, Langwedel, DE;
Leybold Systems GmbH, Hanau, DE;
Abstract
Apparatus for the gluing of two substrates in six processing steps for fabrication of a digital video disc including a motor-driven plate (,) for holding the first substrate (,), a glue dispenser disposed above the plate (,), grasping and holding device for providing vertical movement of the second substrate (,). The side of the plate turned toward the first substrate (,) has a radially outer plane portion (,) in the form of a disk concentric to its axis of rotation (R) and a radially inner portion (,) adjacent to this where the face (F) of this inner portion (,) turned toward the substrate (,) is formed by the outer face of a flat, straight frustum of a cone whose peak (S) strikes the axis of rotation (R) below the plane of application (E) of the substrate (,). In the transitional area from the annular portion (,) to the conical portion (,) an annular groove (,) running coaxially to the axis of rotation is cut into the plate (,) which is connected to a pressure source via channels (,′, . . . ) and corresponds to teardrop or finger-like indentations or recesses (,′, . . . ) in the conical portion (,) extending from the annular groove (,) radially inward.