The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 28, 1995
Filed:
Jun. 24, 1993
William P Stiles, Bothell, WA (US);
Stratos Product Development Group, Inc., Seattle, WA (US);
Abstract
A pivotable trackball-type computer command pointing device for entering commands into a computer has a housing and a ball retained within the housing for generating electrical signals translatable into commands for the computer. A coupling assembly removably attaches to the computer, preferably the keyboard. A knuckle joint assembly pivotally connects the housing to the coupling assembly and includes a pivot blade pivotally received in an elongated recess of a hinge pocket plate to define an axis of rotation within the housing about which the housing is rotatable. Opposing button members each carry actuation teeth which engage a corresponding row of teeth formed in a coupling frame held stationary with respect to the computer by the coupling assembly. When the button members are moved together, the actuation teeth disengage the rows of teeth to permit the housing to be selectively angularly oriented by the user. Alternatively, pawls and corresponding ratchet teeth are used to provide unidirectional orientation of the housing upon depressing one of the two button members. In another alternative embodiment, a brake member having a high coefficient of friction is used to provide a brake to engage the coupling frame. Cams selectively force the brake member against an underside of the coupling frame to lock the housing into a selected angular orientation.