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
Storage basket with lid
Chip on chip semiconductor device including an underfill layer having a resin containing an amine-based curing agent
(4937
Method and apparatus for monitoring and/or controlling the curing of cements used in medical procedures
Image coding apparatus and image decoding apparatus
Wristwatch
Synthesis of 8-amino boron dipyrromethenes having blue fluorescence
  Randomly Featured Patents
Method, system and computer program product for controlling complex rhythmic systems
Differential dynamic content delivery with device controlling action
Thin film transistor substrate and fabricating method thereof
MOCVD molybdenum nitride diffusion barrier for Cu metallization
Interior trim components for motor vehicle
Low-resistance contact to silicon having a titanium silicide interface and an amorphous titanium carbonitride barrier layer
Compositions for treating keratinic materials containing the association of a polyampholyte polymer and a non-volatile and water insoluble organopolysiloxane
Universal parity encoder
Stirring blade for a food processor
Preparation of free-flowing particulate yeast