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. 29, 1980
Filed:
Jan. 27, 1978
Takayuki Morioka, Hitachi, JP;
Jushi Ide, Hitachi, JP;
Hitachi, Ltd., , JP;
Abstract
A printed circuit board loaded with an electronic circuit and constructed to be capable of being inserted in and withdrawn from a bus line on on-line status, in which the input to or the output from the printed circuit board is locked out in response to the presence of two conditions, one is the presence of a demand for insertion or withdrawal of the printed circuit board on on-line status and the other is the presence of such a condition that no information exchange is being made between the printed circuit board and other unit connected with the bus line, thereby releasing the electrical connection between the bus line and the printed circuit board so that the printed circuit board can now be inserted in or withdrawn from the bus line on on-line status.