Title: Humidity sensor

Abstract: A humidity sensor is formed by a pair of electrodes fitted on the surface of a flexible insulator film such as a polyester film, the pair of electrodes being arranged adjacent to one another with a suitable gap therebetween. Within the gap between the adjacent electrodes, a rough surface portion is formed on the insulator and/or the electrodes so that condensed dewdrops on the gap are automatically dispersed, and accordingly the sensitivity of the humidity sensor is improved. A video tape recording and/or reproducing apparatus is also disclosed which employs the humidity sensor described above. In this case, the humidity sensor is mounted on the tape guide drum of the video tape recording and/or reproducing apparatus for detecting the humidity thereon.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Nishibe, Atsushi (Machida, JA)
Kikuchi, Yoshitaka (Atsugi, JA)

Application Number: 616666
Filing Date: 1975-09-25
Publication_date: 1977-05-10
Assignee: Sony Corporation (Tokyo, JA)
Primary Class(es): 360/75 73/335.05, 324/690, 338/35, 340/602, 360/74.1
Other Classes:
US Patent Ref:

2735907	Feb, 1956	Inman	324/65.
2937524	May, 1960	Gregor	324/65.
2976188	Mar, 1961	Kohl	73/336.
3696360	Oct, 1972	Gajewski	73/336.

Other Refs:
Primary Examiner: Tupper, Robert S.
Assistant Examiner:
Attorney: Eslinger; Lewis H., Sinderbrand; Alvin