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US 5,832,774 AGranted
Spring tester
OwnerJohn Antony Smithinventor
Life of this patent
Estimating the term…
Abstract
A spring tester has a hydraulic ram which urges a bearer plate towards a load cell to achieve a predetermined fixed spacing D between them. A replaceable spacer allows adjustment of the distance D to a distance d. A spring to be tested is compressed to the length d and the load indicated by the load cell. Under test, the spring is laid in a cylindrical channel in a carriage to simulate the operation of the spring in an aircraft braking system.
Claims7
A device for testing a helical spring, comprising:
- a carriage;
- an elongated channel defined by the carriage, the channel being horizontally oriented when the device is in use, the channel having a surface on which the spring rests;
- means for compressing the spring to a predetermined length when the spring is resting on the surface of the channel;
- and
- means for measuring the load on the spring when the spring is compressed to the predetermined length.
2 more elements
A device for testing the load on a spring for an aircraft braking system, comprising:
- a carriage, the carriage having a horizontally oriented channel for receiving the spring, the channel having a surface on which the spring rests, the spring having a first end and a second end;
- a plug, the plug having a first end and a second end, the plug being located at one end of the channel;
- a load cell, the first end of the plug bearing on the load cell, the first end of the spring bearing on the second end of the plug;
- and
- a ram, the ram bearing on the second end of the spring, the ram being extendable towards the plug to compress the spring to a predetermined length measured between the ram and the second end of the plug.
2 more elements
Dependencies are inferred from the claim text.