Ultrasonic range finder using ultrasonic sensor
US5907521A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 1996 |
| Grant date | May 25, 1999 |
| Priority date | — |
| Expiry date | Jun 21, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/521
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An ultrasonic range finder which can effectively suppress the influence of direct transmission waves is provided. An ultrasonic range finder according to the present invention comprises a transmitting ultrasonic sensor, a receiving ultrasonic sensor, and a case which holds both ultrasonic sensors mounted and separated on the same surface, wherein a foam member fabricated to contain air bubbles is provided between the ultrasonic sensors within the case and the foam member is exposed to the surface of the case. Each of the sections of the transmitting and receiving ultrasonic sensors (which are held within the case) are covered with a second foam member and the matching layer sections of the transmitting and receiving ultrasonic sensors project beyond the surface of the case.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.