Browse Prior Art Database

Adjustable Friction Device for Palm Top Computers

IP.com Disclosure Number: IPCOM000115955D
Original Publication Date: 1995-Jul-01
Included in the Prior Art Database: 2005-Mar-30
Document File: 2 page(s) / 62K

Publishing Venue

IBM

Related People

English, J: AUTHOR [+5]

Abstract

Disclosed is a friction device consisting of a tapered insert (Delran or equivalent material) which fits into a mating cavity within the movable portion of the hinge. A keyed portion of the tapered insert enters into a corresponding hole, in the stationary portion of the hinge, which fixes it and keeps it from rotating.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 70% of the total text.

Adjustable Friction Device for Palm Top Computers

      Disclosed is a friction device consisting of a tapered insert
(Delran or equivalent material) which fits into a mating cavity
within the movable portion of the hinge.  A keyed portion of the
tapered insert enters into a corresponding hole, in the stationary
portion of the hinge, which fixes it and keeps it from rotating.

      A small diameter screw positions the tapered insert, provides
the control force and keeps the assembly together.

      Fig. 1 shows a palm top machine with the keyboard assembly (A)
hinged to the Display Assembly (B).  For clarification purposes, the
portion of the hinge for the keyboard assembly (C) will be called
Stationary section and the portion of the hinge for the display
assembly (D) will be referred to as the Rotating section.

      The cross section in Fig. 2 shows tapered insert (E) fixed
(rotationally) in relation to stationary section (C) by keyed portion
(F).  Screw (G) exerts a lateral force (H) forcing the taper surface
(I) against the internal surface of the mating cavity (J) inside
rotating section (D) of the hinge assembly.  Surfaces I and J provide
the required friction to maintain the position of the display
assembly (B) in relation to keyboard assembly (A) once the machine is
opened.  Screw (G) can be adjusted to increase/decrease lateral force
(H) thus increasing/decreasing friction between mating surfaces (I)
and (J).  Some applications will benefit...