Inflatable device for installing strain gage bridges

US4407686A · kind A · utility

Assignee

• The United States of America as represented by the Administrator of the National Aeronautics and Space Administration · US

Inventors

• Clarence E. Cook · Lancaster, US
• Glynn E. Smith · Quartz Hill, US
• Richard C. Monaghan · Pearblossom, US

Key dates

• Filing date: Nov 17, 1981
• Grant date: Oct 4, 1983
• Expiry date: Nov 17, 2001

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T156/1705
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The invention generally relates to methods and devices for installing in a tubular shaft multiple strain gages, and more particularly to a method and a device for pneumatically forcing strain gages into seated engagement with the internal surfaces of a tubular shaft in an installation of multiple strain gages in a tubular shaft. The essence of the invention involves the novel concept of seating strain gages or other electronic devices in a template-like component, wrapping the template-like component about a pneumatically expansible body, inserting the component into a shaft and expanding the body pneumatically, a suitable adhesive having been applied to the surfaces.