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| Number | Title | Issue Date |
| 5890586 | Switching element cast into an insulating compound and method of making the same In a resin-embedded switching element provided with a casting containment, which encloses an area of the switching element to be covered by a resin, the casting containment has a fill hole consisting of a blind bore having at its inner end a diaphragm whi... | 04/06/1999 |
| 5810491 | Splash water protected keyboard In a splash-water protected keyboard having a contact foil arranged in a housing and a rubber mat with switch domes disposed over the contact foil and keys with contact stems disposed in the housing over the switch domes for actuating the contacts in the ... | 09/22/1998 |
| 5738450 | Keyboard with simplified switch pad having a stabilization element In a keyboard comprising a housing including lower and upper housing parts wherein a metal plate, a switch foil set and a switch pad with resilient switch domes are disposed in the lower housing part and the upper housing part has keyboard keys slidably s... | 04/14/1998 |
| 5669488 | Push button switch with star wheel arrangement In a push button switch with a star wheel having segments with trip cams and being supported in the push button so as to be rotatable about an axis which is normal to the operating direction of the push button, the star wheel is rotated, when the push but... | 09/23/1997 |
| 5612691 | Ergonomic keyboard In an ergonomic keyboard comprising at least two housing sections with separate key pads wherein the two housing sections are interconnected by a joint permitting pivoting and also tilting of the two housing sections relative to each other, the joint comp... | 03/18/1997 |
| 5574446 | Keyboard In a keyboard housing a housing top with a key pad and a housing bottom with support legs wherein the housing includes a support mat and a multi-layer contact foil set arranged underneath the key pad to be actuated thereby, a metal plate is embedded in a ... | 11/12/1996 |
| 5488213 | Low-profile keyboard key A key switch which is particularly suitable for low profile keyboards includes a plunger whose contacting movement is converted by means of trigger cams into a movement perpendicularly to the plunger movement for switching a contactor which is movable rel... | 01/30/1996 |
| 4950093 | Support mechanism for multiple-key units A multiple-key unit is provided that includes a top portion, a base portion and a support mechanism. The support mechanism is provided with a body portion and a substantially U-shaped wire. The U-shaped wire includes a cross-part and two free ends that ar... | 08/21/1990 |
