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Class Information
Number: 367/112
Name: Communications, electrical: acoustic wave systems and devices > Echo systems > Distance or direction finding > With indicator > Alarm
Description: Subject matter which includes an alerting device (e.g., minimum depth alarm).
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7324021 |
Input device |
Jan. 29, 2008 |
| 7209031 |
Obstacle detecting apparatus and method |
Apr. 24, 2007 |
| 7006406 |
Underwater detecting apparatus, depth measuring apparatus and display apparatus |
Feb. 28, 2006 |
| 6317385 |
Aquaculture feeding monitor |
Nov. 13, 2001 |
| 6141302 |
Optical recording/reproducing apparatus including a mask device for masking marginal rays, in a direction perpendicular to a recording medium track, of a light beam returned from the recording |
Oct. 31, 2000 |
| 5627510 |
Vehicular safety distance alarm system |
May. 6, 1997 |
| 5594413 |
Car collision prevention apparatus and method using dual processor and automatic sensor switching function |
Jan. 14, 1997 |
| 5574426 |
Obstacle detection system for vehicles moving in reverse |
Nov. 12, 1996 |
| 5274607 |
Pool monitor |
Dec. 28, 1993 |
| 4873676 |
Sonar depth sounder apparatus |
Oct. 10, 1989 |
| 4731762 |
Distance sensing apparatus |
Mar. 15, 1988 |
| 4677595 |
Ultrasonic vehicle rangefinder |
Jun. 30, 1987 |
| 4648081 |
Circuit for automatic seabed discrimination |
Mar. 3, 1987 |
| 4644512 |
Sonar depth finder with relative depth LCD display |
Feb. 17, 1987 |
| 4597069 |
Depthsounder/fish finder |
Jun. 24, 1986 |
| 4580250 |
Ultrasonic detection and communication system for automobiles |
Apr. 1, 1986 |
| 4561064 |
Non-contacting distance measuring system |
Dec. 24, 1985 |
| 4551722 |
Apparatus and method for detecting obstacles in the path of a moving vehicle |
Nov. 5, 1985 |
| 4549181 |
Moving obstacle detection system for a vehicle |
Oct. 22, 1985 |
| 4543577 |
Moving obstacle detection system for a vehicle |
Sep. 24, 1985 |
| 4528563 |
Rearward obstruction sensing system for automotive vehicle |
Jul. 9, 1985 |
| 4479207 |
Load detecting system for automatic storage apparatus |
Oct. 23, 1984 |
| 4464738 |
Sonar distance sensing apparatus |
Aug. 7, 1984 |
| 4459689 |
Multiple zone object detection system |
Jul. 10, 1984 |
| 4442512 |
Ultrasonic wave transmitting and receiving device for vehicles |
Apr. 10, 1984 |
| 4409827 |
Combined marine instrument and display therefor |
Oct. 18, 1983 |
| 4399431 |
Alarm or warning device for signaling left-behind master or original |
Aug. 16, 1983 |
| 4345657 |
Electronic depth indicator for hydraulic drilling machines |
Aug. 24, 1982 |
| 4326273 |
Ultrasonic ranging device |
Apr. 20, 1982 |
| 4323992 |
Depth sounder repeater structure and method |
Apr. 6, 1982 |
| 4313181 |
Torpedo countermeasure |
Jan. 26, 1982 |
| 4278962 |
Automatic alarm system for detecting obstacles behind a backing vehicle |
Jul. 14, 1981 |
| 4260980 |
Blind spot detector for vehicles |
Apr. 7, 1981 |
| 4240152 |
Object indicator for moving vehicles |
Dec. 16, 1980 |
| 4229811 |
Intrusion detection method and apparatus |
Oct. 21, 1980 |
| 4228530 |
Mud level monitor |
Oct. 14, 1980 |
| 4225952 |
Marine depth sounding apparatus |
Sep. 30, 1980 |
| 4225949 |
Method of and apparatus for navigating unmarked channels |
Sep. 30, 1980 |
| 4221004 |
Adjustable ultrasonic level measurement device |
Sep. 2, 1980 |
| 4197528 |
Movement-detecting processing circuit for an ultrasonic detection system |
Apr. 8, 1980 |
| 4195359 |
Automatic echo detection and classification system |
Mar. 25, 1980 |
| 4186371 |
Echo sounders |
Jan. 29, 1980 |
| 4184142 |
Pulse generating circuit means for depth sounder alarm and transmitter |
Jan. 15, 1980 |
| 4097836 |
Depth sound indicator |
Jun. 27, 1978 |
| 4081784 |
Omnidirectional monitor buoy |
Mar. 28, 1978 |
| 4057779 |
Ultrasonic detection system |
Nov. 8, 1977 |
| 4056802 |
Sonar alarm system |
Nov. 1, 1977 |
| 4028662 |
Passing vehicle signalling apparatus |
Jun. 7, 1977 |
| 3946376 |
Multiple zone intrusion alarm system |
Mar. 23, 1976 |
| 3938118 |
Multizone intrusion alarm system |
Feb. 10, 1976 |
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