Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Apparatus for ultrasonically inspecting circular bores










Image Number 2 for United States Patent #4304134.

Apparatus for ultrasonically inspecting material radially bounding a circular bore into which the apparatus is insertable. The apparatus includes a central housing adapted to lie along the bore's longitudinal axis, three support arms which are engageable with the bounding wall of the bore and are circumferentially equally spaced about the central housing, linkage arms joining the support arms and the central housing for maintaining a predetermined relative configuration between the support arms and the bore wall, a transducer carrier which protrudes radially inside the support arms' engageable surfaces and is supported by each support arm, an ultrasonic transducer carried in each ultrasonic transducer carrier, means for biasing the transducers radially outward relative to their associated transducer carrier, and a pneumatically actuated cylinder which rotates the linkage arms and displaces the support arms radially outward into engagement with the bore wall. The transducers are restrained in the transducer carriers within predetermined displacement limits by a pin extending from each transducer carrier into an opening formed in each transducer. The transducers' openings are radially larger than the pins extending thereinto so as to permit limited radial displacement of the transducers relative to the carriers. Suitable relative radial positioning of the transducer carriers and support arms and selection of appropriate strength biasing means enables application of high centering forces on the support arms to coaxially align the housing with the bore's center line while independently providing relatively small, optimum engagement forces between the transducers and bore wall.








 
 
  Recently Added Patents
Biomedical electro-stimulator
Electric motor
Flexible organic light emitting device and manufacturing method thereof
Adaptive switch mode LED system
Flame-proofed thermoplastic compositions
Wire guide
Acoustic measuring instrument
  Randomly Featured Patents
Support for dye transfer type thermosensitive printing sheet
Liquid ejection apparatus and non-transitory storage medium storing program
Active matrix liquid crystal display with identification mark in the lower opaque conductive film
Method and apparatus for sorting disk access commands in a rotational position queue according to time differences between the commands
1,3,4-Thiadiazole-2-carboxylic acid derivatives, process for making the same and fungicidal and nematocidal compositions containing same
Topologically segregated, encoded solid phase libraries
Bench top printed circuit board scrubbing device
Programmable voltage stabilizing circuit for a programmable integrated circuit device
MEMS field emission device
Hazardous waste transportation and disposal