NATHAN JOHNNIE
Engineers in Middletown, RI
License number
Virginia 0402032167
Issued Date
Jun 25, 2003
Expiration Date
Jun 30, 2017
Category
Professional Engineer License
Type
Professional Engineer
Address
Address
Middletown, RI
Professional information
Device For Recovery Of Physical Objects
US Patent:
8403389, Mar 26, 2013
Filed:
Sep 29, 2011
Appl. No.:
13/248456
Inventors:
Nathan Johnnie - Middletown RI, US
Helene B. Anderson - West Greenwich RI, US
Joseph W. Robicheau - Portsmouth RI, US
Helene B. Anderson - West Greenwich RI, US
Joseph W. Robicheau - Portsmouth RI, US
Assignee:
The United States of America as represented by the Secretary of the Navy - Washington DC
International Classification:
B66C 1/12, B63B 21/50
US Classification:
294 661, 294 662, 367131
Abstract:
A device for recovery of physical objects includes a chain having two ends and a retriever attached to one of the ends. The retriever is configured to locate the object to be recovered and to grasp and retrieve that object once located. The retriever includes transducers that detect acoustic frequencies propagating in a fluid medium. Independent transponders, which can be deployed from the retriever; are provided for deployment in an area to be searched. Each transponder emits a predetermined acoustic frequency that is detectable by the transducers. The transducers signal movement of the recovery device for retrieval of the object.
Method Of Laser Vibration Defect Analysis
US Patent:
8483977, Jul 9, 2013
Filed:
Jun 4, 2010
Appl. No.:
12/794065
Inventors:
Nathan Johnnie - Middletown RI, US
Lynn T. Antonelli - Cranston RI, US
Lynn T. Antonelli - Cranston RI, US
Assignee:
The United States of America as represented by the Secretary of the Navy - Washington DC
International Classification:
G01B 5/28
US Classification:
702 36
Abstract:
A method for locating defects in a target includes subjecting the target to an ultrasonic vibration. A first laser beam is then transmitted to the target and a reflection is received. A vibration signal is produced from the reflection that gives the target's response to the ultrasonic vibration. A digital image is produced of the target that includes the region of the first laser beam reflection. The digital images are overlaid with the vibration signal to provide overlaid data. The overlaid data is tested to determine a probability of the overlaid data being non-random. The probability is compared against a threshold to indicate a potential area of concern that may include defects.
Battery Electrolyte Level Detector Apparatus
US Patent:
2011018, Jul 28, 2011
Filed:
Jan 26, 2010
Appl. No.:
12/693708
Inventors:
Nathan Johnnie - Middletown RI, US
Helene B. Anderson - West Greenwich RI, US
Joseph W. Robicheau - Portsmouth RI, US
Helene B. Anderson - West Greenwich RI, US
Joseph W. Robicheau - Portsmouth RI, US
International Classification:
H01M 10/48
US Classification:
429 93
Abstract:
An electrolyte detector is provided that includes two micrometers which slide relative to each other along a frame to adjust the electrolyte detector to a size of the battery. A transmitter rod and a receiver rod support an acoustic transmitter and an acoustic receiver, respectively, and are slidably mounted with respect to the micrometers. The micrometers measure the position of the transmitter and receiver for placement on the side of the battery at a desired level of electrolyte. A transmitter director and receiver director concentrates the transmission and receipt of acoustic energy to locate the electrolyte level. An electronic circuit analyzes the received signal to determine whether the signal is transmitted through air or through an electrolyte.
Linkage Assembly
US Patent:
2013008, Apr 4, 2013
Filed:
Nov 15, 2011
Appl. No.:
13/296488
Inventors:
Nathan Johnnie - Middletown RI, US
Helene B. Anderson - West Greenwich RI, US
Joseph W. Robicheau - Portsmouth RI, US
Helene B. Anderson - West Greenwich RI, US
Joseph W. Robicheau - Portsmouth RI, US
International Classification:
F16G 13/14
US Classification:
59 85
Abstract:
A device for recovery of physical objects includes a chain having two ends and a retriever attached to one of the ends. The retriever is configured to locate the object to be recovered and to grasp and retrieve that object once located. The retriever includes transducers that detect acoustic frequencies propagating in a fluid medium. Independent transponders, which can be deployed from the retriever; are provided for deployment in an area to be searched. Each transponder emits a predetermined acoustic frequency that is detectable by the transducers. The transducers signal movement of the recovery device for retrieval of the object.