| Patent Number |
Title Of Patent |
Date Issued |
| RE35846 |
Sheet sorting apparatus |
July 14, 1998 |
| The vertical stack of trays in a movable tray sorter for sheets of paper exiting a .[.copies.]. .Iadd.copier .Iaddend.is moved in a manner to enlarge the spacing between consecutive pairs of the trays to accept consecutive sheets of paper by moving the trays along a pair of helical c |
| 5868609 |
Wafer carrier rotating head assembly for chemical-mechanical polishing apparatus |
February 9, 1999 |
| A chemical-mechanical polishing apparatus includes a wafer carrier with a very low center of gravity which allows pressure to be applied evenly on a wafer being polished. The wafer carrier includes top, center, and bottom mating subassemblies with only the center and bottom subassembly o |
| 5843269 |
Slurry dispensing system for chemical-mechanical polishing apparatus |
December 1, 1998 |
| Chemical-mechanical polishing apparatus includes three subassemblies, a top subassembly which is non-rotating but which has a lower section which forms a shell about a center and a lower subassembly both of which rotate within the shell. The system also includes a slurry dispensing syste |
| 5830043 |
Chemical-mechanical polishing apparatus with in-situ pad conditioner |
November 3, 1998 |
| Chemical-mechanical polishing apparatus includes a pad reconditioning mechanism which comprises nested conical tubes which overly the pad. The outer tube has an array of holes in it much like the head of an electric razor and is rotated about its axis by being in contact with the rotatin |
| 5553844 |
Sheet sorting apparatus |
September 10, 1996 |
| A movable tray paper sorter includes mechanical and electronic controls for moving, in each paper delivery operation, both the tray set and the paper chute characteristic of such sorters. The trays of the tray set are oriented almost vertically and move along a horizontal axis. The paper |
| 5351947 |
Sheet sorting apparatus |
October 4, 1994 |
| The vertical stack of trays in a movable tray sorter for sheets of paper exiting a copies is moved in a manner to enlarge the spacing between consecutive pairs of the trays to accept consecutive sheets of paper by moving the trays along a pair of helical coils, each of which has a turn |
| 5169144 |
Sheet sorting apparatus |
December 8, 1992 |
| A sheet sorting apparatus of the shifting tray type employs a pair of helical coils, each coil being predominantly wound with a number of turns of a first pitch, and containing at least one turn of a second, coarser pitch. The ends of each coil are held by through holes of a center rod |
