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
Integrated circuit having a discrete capacitor mounted on a semiconductor die
Wind driven generator for vehicles
Animation control apparatus, animation control method, and non-transitory computer readable recording medium
Display stand for a mobile tablet computer
System and method for displaying relationships between electronically stored information to provide classification suggestions via inclusion
Adjustable high precision surveying device
Die packages and systems having the die packages
  Randomly Featured Patents
Pectate lyases
Infrared converter
Security system
Layered models for context awareness
Hall-effect magnetic sensor arrangement
Hybrid maize 33N56
Method for cleaning semiconductor processing equipment by reducing particles
Closable box
Vehicle brake light system
Image pickup apparatus with rotary lens barrel