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:
Jun. 13, 1978
Filed:
Jan. 07, 1977
Orrin Bernard O'Dea, Garden Grove, CA (US);
Communication Mfg. Company, Long Beach, CA (US);
Abstract
A test apparatus for forward selector switches in a telephone switching system having a telephone loop. Means detects a preselected operative condition in such telephone systems. Means generates a variable number of pulses for control of forward selector switches. The latter includes the following: A switch for closing and breaking a telephone loop to thereby form such a pulse; an indicator for indicating the desired number of pulses including one or more than one pulse; a counter; means for enabling the counter to count the formed pulses greater than one; a control circuit enables the switch to break a telephone loop upon such detection of a predetermined operative condition and for each different state of the counter, and the control circuit is also operative for terminating the breaking by the switch upon a predetermined relation existing between the indicator and counter. Also disclosed is a pulse generating means as a subcombination of the aforementioned.