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:
Apr. 15, 1986
Filed:
Aug. 28, 1984
John J Bisczat, Lexington, KY (US);
Thomas M Paulson, Lexington, KY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
In a machine (10) such as electronic typewriters having a functional package (30) which contain electronic components (31) and (21) respectively, an interlock (13a, 40, 50) inhibits the plugging in and removal of the functional package (30) without removing the plug end (13a) of a line cord (13) from the receptacle (14) on the machine (10). In the receptacle (14) associated with the plug end (13a) of the line cord is the distal end portion (41) of a biased bellcrank (40). The functional package contains a locking bar (50) which extends horizontally of the package (30). Upon insertion of the power cord plug end (13a) into the housed receptacle (14) the bellcrank (40) is caused to rotate engaging the lock bar (50) by passing through an opening (36a) on one side (37a) of the functional package (30). Upon engagment of the locking bar (50) by the bellcrank (40), the locking bar (50) is displaced through an opening (36b) in the opposite side of the functional package (30), and the locking bar (50) moves into locking position in the adjacent aperture (47) of the machine. In this manner, movement of the functional package (30), relative to the machine (10), is inhibited by the locking action of the interlock making it impossible to unplug the functional package (30) without removing power from the machine. The remote or extended end of the bellcrank, in a like manner, by itself prevents the insertion of the functional package (30) by engagement of the lower end of the functional package (30) against the terminal or remote end portion (45) of the bellcrank (40), if insertion of the functional package (30) is attempted without removal of the plug end (13a) from the receptacle (14).