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Dogleg Keybutton Guide Design

IP.com Disclosure Number: IPCOM000041734D
Original Publication Date: 1984-Mar-01
Included in the Prior Art Database: 2005-Feb-02
Document File: 2 page(s) / 56K

Publishing Venue

IBM

Related People

Gaunce, SA: AUTHOR

Abstract

Dogleg keybuttons, such as keybutton 10, present unique problems with respect to guiding the keybutton for up/down movement inasmuch as the area upon which an operator may strike the button is large and is not positioned directly over the axis of the stem of the keybutton 12. When the keybutton is struck in a region displaced from stem 12, there is an inherent tendency to cause the stem 12 to bind within the chimney 14. One technique for stabilizing the keybutton 10 is to reduce the amount of sideplay or potential rotation about an axis perpendicular to the stem 12. This may be accomplished with a stabilizer bar which is then mounted with pivots on the keyboard plate 16. These type devices are well known in the art and are utilized, but are expensive.

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Dogleg Keybutton Guide Design

Dogleg keybuttons, such as keybutton 10, present unique problems with respect to guiding the keybutton for up/down movement inasmuch as the area upon which an operator may strike the button is large and is not positioned directly over the axis of the stem of the keybutton 12. When the keybutton is struck in a region displaced from stem 12, there is an inherent tendency to cause the stem 12 to bind within the chimney 14. One technique for stabilizing the keybutton 10 is to reduce the amount of sideplay or potential rotation about an axis perpendicular to the stem 12. This may be accomplished with a stabilizer bar which is then mounted with pivots on the keyboard plate 16. These type devices are well known in the art and are utilized, but are expensive. An alternate approach which reduces the expense and allows the use of keyboard plates 16 with standard chimney openings is illustrated. Inserted into the chimney opening 18 in one or more of the outlying chimneys 20, accommodating the dogleg button 10, is a sleeve-type member 22 which effectively fits into the opening 18 in the chimney and has within it a smaller dimensioned axial passage 24. This passage 24 will accommodate a tenon 26 molded onto the bottom of dogleg button 10 in lieu of a stem such as 12. The reduced width dimension with respect to the length dimension of tenon 26 tends to prevent lateral movement of tenon 26 and thus reduces the rotation of keybutton 10 about an axis...