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. 14, 1977
Filed:
Feb. 13, 1976
Hugh Cottingham, Upper Montclair, NJ (US);
Joseph Scrocco, West Orange, NJ (US);
BHN, Inc., Upper Montclair, NJ (US);
Abstract
A plant light sensor adaptor for converting a plant soil moisture monitoring device into a plant light sensing device is provided. The plant soil moisture monitoring device includes first and second metal electrodes and an indicator coupled to the electrodes for sensing and indicating current flow due to the electro-galvanic response produced by the difference in the redox potential in the first and second metal electrodes, which current flow is controlled by the moisture content of the plant soil under test. The adaptor includes a reference member having a receiving portion for receiving the first and second metal electrodes, the receiving portion including first and second spaced apart electrically isolated contacts, the receiving portion being constructed and arranged to bring the first and second contacts respectively into electrical contact with the first and second metal electrode, and photosensitive circuitry coupled to the respective first and second spaced apart electrically isolated contacts, the photosensitive circuitry being adapted to detect the luminous flux incident thereon and in response thereto apply through the respective first contact and electrode, and through the respective second contact and electrode current signal representative of the luminous flux detected by the photo-sensitive circuitry, whereby the indicator senses and indicates the luminous flux detected by the photosensitive circuitry.