Supports – Armrest or headrest – Armrest for writer
Reexamination Certificate
2000-09-11
2001-12-25
Ramirez, Ramon O. (Department: 3632)
Supports
Armrest or headrest
Armrest for writer
C248S118000, C248S222110
Reexamination Certificate
active
06332596
ABSTRACT:
FIELD OF THE INVENTION
The present invention generally relates to a computer keyboard, and in particular to a device for releasably mounting a wrist support to a computer keyboard.
BACKGROUND OF THE INVENTION
A keyboard is a common input device for a computer. A user usually uses two hands to operate the keyboard. However, in operating a keyboard, a user must suspend his or her wrists. This causes extreme strains on the user's wrists in an excessive period of operating the keyboard. A wrist support is usually attached to a front side of the keyboard for supporting the wrists of the user.
Some conventional wrist supports are integrally fixed with a keyboard. Adding a wrist support to a keyboard increases the overall size of the keyboard and consequently, costs of package and transportation of the keyboard are increased. Furthermore, such an integral structure of the wrist support and the keyboard does not allow a user to change the wrist support. This may causes problem when a computer is to be used by many users, including adults and children, for the length of the arms is different between an adult and a child.
Wrist supports having a foldable structure are also available in the market. Such foldable wrist supports can overcome the size problem, but is still not suitable for different users due to its inexchangeability.
It is thus desirable to provide a device for releasably mounting a wrist support to a keyboard for overcoming the above-discussed problems.
SUMMARY OF THE INVENTION
Accordingly, an object of the present invention is to provide a device for releasably mounting a wrist support to a keyboard for allowing ready change of the wrist support.
Another object of the present invention is to provide a device for releasably mounting a wrist support to a keyboard for allowing ready removal of the wrist support in order to reduce the overall size of the keyboard assembly.
To achieve the above objects, in accordance with the present invention, there is provided a wrist support mounting device for releasably mounting a wrist support to a keyboard comprising a slide movably received in a slot defined in an front extension of the keyboard. The slide has a bottom projection extending beyond a bottom face of the keyboard for manually moving the slide and an L-shaped top projection having a segment spaced from a top surface of the slide for defining a channel. A guide plate is fixed to the keyboard by a bolt and has an edge movably received in the channel for retaining the slide in the slot and guiding the movement of the slide. A catch is attached to the slide to be movable therewith between a released position and a secured position. The catch forms a barb whereby when the catch is at the secured position, the barb engages an opening defined in the wrist support for securing the wrist support to the keyboard and when the catch is at the released position, the barb disengages from the opening of the wrist support for releasing the wrist support from the keyboard. The catch is biased by a spring toward the secured position for securely retaining the wrist support on the keyboard. The wrist support may be removed by moving the catch to the released position for disengaging the barb from the opening of the wrist support.
REFERENCES:
patent: 3514064 (1970-05-01), Katz
patent: 5660360 (1997-08-01), Yang
patent: 5904327 (1999-05-01), Cheng
patent: 6029940 (2000-02-01), Klein
Behavior Tech Computer Corp.
Chan Korie
Ramirez Ramon O.
Rosenberg , Klein & Lee
LandOfFree
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