×

Apparatus for manufacturing a disc-shaped information carrier

  • US 5,284,435 A
  • Filed: 11/23/1992
  • Issued: 02/08/1994
  • Est. Priority Date: 02/28/1991
  • Status: Expired due to Fees
First Claim
Patent Images

1. In an apparatus for manufacturing an object having a surface structure by pressing a first element which has a relief on a surface against a second element to provide the second element with a microstructure by cold deformation said apparatus comprising said first element and two pressure members having pressure surfaces facing each other and opposing said elements, the pressure members being movable relative to each other in directions of movement transverse to the pressure surfaces, the improvement wherein a pressure body is secured to the pressure surface of at least one of the pressure members, said pressure body having a contact surface for cooperation with one of the elements and said pressure body being made of a material whose quotient of its Poisson'"'"'s ratio to its modulus of elasticity differs less from the corresponding quotient of the material of the element cooperating with said contact surface in operation than from the corresponding quotient of the material of the pressure member to which the pressure body is secured.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×