| Patent Number |
Title Of Patent |
Date Issued |
| D354484 |
Computer mouse |
January 17, 1995 |
|
| D301142 |
Computer mouse |
May 16, 1989 |
|
| D283818 |
Cursor for computer display terminal |
May 13, 1986 |
|
| 5982357 |
Computer keyboard systems and methods for determining excessive key stroke force |
November 9, 1999 |
| Computer keyboard systems and methods of determining excessive keystroke force or overpressure are described. A computer keyboard system 10 is illustrated having a keyboard array of keys 14. Individual keys 14 are capable of being reciprocated through a keystroke range which comprises an |
| 5879088 |
Computer keyboard with adjustable force keystroke feature using air pressure |
March 9, 1999 |
| A computer keyboard 10 having a plurality of keys 18 at desired locations being supported above a support plate 20 having a plurality of apertures 22 at the desired locations. A membrane keyswitch assembly 24 is mounted on the support plate 20 having keyswitches at each desired location. |
| 5743384 |
Self-leveling key switch |
April 28, 1998 |
| A low cost self-leveling keyswitch 10 having a keytop 32 with an elongated keycap 34 that extends in a major direction. The keytop 32 has an off-set keystem 36 that is slidably mounted in a keystem bearing 26. The keytop 32 has a self-leveling projection 42 that extends downward, spaced |
| 5684279 |
Computer keyboard with improved membrane keyswitch structure having deflection concentration fea |
November 4, 1997 |
| A computer keyboard 10 has a plurality of keys 24 with each key 24 having a membrane keyswitch 30. Each keyswitch 30 has a lower membrane layer 32 with a printed circuit having switch contacts 42 printed on an upper side thereon within a switch contact area. An upper membrane layer 36 is |
| 5481074 |
Computer keyboard with cantilever switch and actuator design |
January 2, 1996 |
| A computer keyboard with multiple rows of cantilevered keys which are flexibly attached to first common mounting strips. The keyboard also has multiple rows of cantilevered sub-members flexibly attached to second common mounting strips, with the sub-members being aligned beneath asso |
| 5455556 |
Single station cursor device suitable for keyboards |
October 3, 1995 |
| A cursor control device includes a single key cursor control which utilizes pressure sensitive resistors for controlling cursor movement. Pressure sensitive resistors are arrayed so as to provide an output corresponding to the magnitude and direction of an applied input pressure. Input |
| 5438177 |
Two-layer membrane switch |
August 1, 1995 |
| A two-layer membrane switch particularly suited for application as a keyswitch in low-profile keyboard applications, such as keyboards for notebook or laptop type personal computers. When used as a keyswitch, the switch comprises a first conductor layer including a conductive ink pat |
| 5430263 |
Computer keyboard with integral dome sheet and support pegs |
July 4, 1995 |
| A computer keyboard has multiple rows of cantilevered keys which are flexibly attached to common mounting strips. The rows of cantilevered keys are arranged to partially overlap adjacent rows such that the keys in one row actuate switch contacts aligned beneath mounting strips in the |
| 5422447 |
Keyboard with full-travel, self-leveling keyswitches and return mechanism keyswitch |
June 6, 1995 |
| An improved alphanumeric keyboard 10 is illustrated for use in lap top or notebook personal computers 12. The keyboard 10 has a plurality of full travel, self leveling keyswitches 14 for actuating printed circuit electrical contacts 22 and 26 when the keyswitch is depressed. The keyb |
| 5376765 |
Key leveler apparatus |
December 27, 1994 |
| A leveler suitable for use in multi-unit keys for a keyboard, such as a notebook keyboard, includes a J-shaped cantilever member interposed between a keycap and a base used to house the keycap. The leveler is rotatably attached to the keycap and rotatably and slidably engaged with th |
| 5360955 |
Computer keyboard with cantilever switch design and improved PCB/switch membrane interface |
November 1, 1994 |
| A computer keyboard has multiple rows of cantilevered keys which are flexibly attached to common mounting strips. The rows of cantilevered keys are arranged to partially overlap adjacent rows such that the keys in one row actuate switch contacts aligned beneath mounting strips in the |
| 5358344 |
Keyboard with full-travel, self-leveling keyswitches |
October 25, 1994 |
| An improved alphanumeric keyboard 10 is illustrated for use in lap top or notebook personal computers 12. The keyboard 10 has a plurality of full travel, self leveling keyswitches 14 for actuating printed circuit electrical contacts 22 and 26 when the keyswitch is depressed. The keyb |
| 5335137 |
Computer keyboard with electrostatic discharge feature |
August 2, 1994 |
| A computer keyboard according to a preferred construction has multiple non-conductive keys and at least one conductive key mounted in a keyboard housing. The conductive key includes a molded plastic key body having conductive material embedded therein. Conductive plugs are electrically |
| 5329079 |
Computer keyboard with improved cantilever switch design |
July 12, 1994 |
| A computer keyboard has multiple rows of cantilevered keys which are flexibly attached to common mounting strips. The rows of cantilevered keys are arranged to partially overlap adjacent rows such that the keys in one row actuate switch contacts aligned beneath mounting strips in the |
| 5305238 |
Data input monitor and indicator for managing work pace and rest periods |
April 19, 1994 |
| A data input monitor for use with a data input device, such as a computer keyboard, measures the amount of data entered into a computer and establishes intermittent rest periods based on the measured data amount. The data input device includes a display for informing a user when to rest |
| 5298706 |
Membrane computer keyboard and improved key structure |
March 29, 1994 |
| A computer keyboard employs a single monoblock structure to both support the keys and to define the aesthetic enclosure. The monoblock has multiple key supports into which key bodies are slidably mounted. The keyboard includes a switch membrane disposed on top of the monoblock and a dome |
| 5278557 |
Cursor movement control key and electronic computer keyboard for computers having a video displa |
January 11, 1994 |
| A cursor movement control key and electronic keyboard for a computer having a video display incorporates a force-sensitive resistor having a junction resistance which varies inversely with pressure applied thereto. The external key cap engages an actuator which bears against the forc |
| 5212356 |
Computer keyboard with flexible dome switch layer |
May 18, 1993 |
| As a preferred embodiment, a computer keyboard dome sheet is illustrated in the figures showing a extruded sheet 30 with an elongated body 32 with parallel extruded ridges 44 corresponding to the keyboard rows 16a-16f. Apertures or cutouts are formed in the ridges 46 at desired intervals |
| 5117076 |
Quieting device for keytop leveling mechanisms |
May 26, 1992 |
| Excess clearance provided between a multi-wide keytop and a rigid supporting housing layer is removed by provision of yieldable projections that extend upwardly beyond the housing layer and engage the movable leveling bar. The projections are formed integrally with an underlying dome |
| 4950874 |
Expansion joint for keyboard dome sheets |
August 21, 1990 |
| A dome sheet molded integrally from elastomeric rubber or plastic material is divided into two or more planar sheet sections, each containing a plurality of raised domes used in keyboard actuation. The adjacent sections are integrally joined by a hinged web having walls extending out |
| 4939324 |
Keyswitch for computer keyboard |
July 3, 1990 |
| A keyswitch operator includes a supporting bearing block and axially movable keytop and plunger. A cylindrical plunger is slidably guided between alternating flat and conical surfaces about a through bore in the bearing block. The flat surfaces provide constant bearing guides along m |
| 4938702 |
Connector clamp for attaching flat electrical conductor leads to printed wiring boards |
July 3, 1990 |
| A connector clamp for attaching conductive surface pads on a flexible sheet to a printed wiring board having complementary conductive surface pads is bent from an elongated precut pattern. The resulting clamp member includes a series of transverse fingers along one leg of a U-shaped cros |
| 4774634 |
Printed circuit board assembly |
September 27, 1988 |
| A printed circuit assembly includes surface mounted circuit components held in place on a printed circuit board by a rigid connection. The outwardly extending leads of the circuit component are bonded to conductive areas of the board by an electrically conducting flexible adhesive. The c |
| 4277780 |
Scan-controlled keyboard |
July 7, 1981 |
| A keyboard having a matrix arrangement of analog keyswitches arranged along column conductors leading from a driver chip and row conductors leading to a detector chip. The driver chip has a strobe line and multiple address lines adapted to connect to a controller. The column conductors a |
| 4277689 |
Document reader |
July 7, 1981 |
| An optical character reader for conversion of information to a machine readable code from a strip of alpha-numeric characters on the face of a document. It includes an elongated document slot along which the document may be hand guided through a predetermined path. Optical viewing means |
| 4267439 |
Document reader lamp life extension system |
May 12, 1981 |
| An optical character reader for conversion of information to a machine readable code from a strip of alpha-numeric characters on the face of a document. It includes an elongated document slot along which the document may be hand guided through a predetermined path. Optical viewing means |
| 4260880 |
Optical character scanner |
April 7, 1981 |
| An optical character reader for conversion of information to a machine readable code from a strip of alpha-numeric characters on the face of a document. It includes an elongated document slot along which the document may be hand guided through a predetermined path. Optical viewing means |
| 4245151 |
Dust dispersion system for a document reader |
January 13, 1981 |
| An optical character reader for conversion of information to a machine readable code from a strip of aplha-numeric characters on the face of a document. It includes an elongated document slot along which the document may be hand guided through a predetermined path. Optical viewing means |
| 4209819 |
Capacitive keyswitch |
June 24, 1980 |
| A capacitive keyswitch is described having a plunger that is movable along an axis between a released or undepressed position and a depressed position. A flexible capacitance plate is mounted on the plunger for movement therewith in a desired path. Two rigid capacitance plates are mo |
