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US 6,099,223 AGranted
Adjustable wedge washer
AssigneeInstron Corporation
InventorsErik J. Galis, Robert S. Whitelaw, III, Scott L. Maxwell
Life of this patent
Estimating the term…
Abstract
The subject invention relates to an adjustable wedge washer to be used in connection with various material testing machines which are used to mechanically test the strength of bolts, screws and other types of fasteners. The subject adjustable wedge washer includes two wedge washers being joined together mechanically with a snap ring so that they are not separable. The wedge washers then rotate relative to each other to form a variable testing angle relative to the fastener.
Claims9
An adjustable wedge washer comprising:
- a) at least two wedge washers;
- b) each of said wedge washers including an angled surface angled 5 degrees relative to a common plane;
- c) means for moveably linking said wedge washers and positioning the angled surface of one wedge washer to abut the angled surface of the other wedge washer;
- and wherein
- d) said wedge washers are rotatable relative to one another to define a top surface angle which can be varied from a zero degree angle to a maximum angle by rotating the wedge washers relative to the one and the other.
2 more elements
A proof test device comprising:
- a first wedge having a first angled surface angled relative to a common plane and defining an opening;
- a second wedge having a top surface angled relative to said common plane defining a wedge angle, a second angled surface, and including a depending portion depending from the second angled surface, wherein
- the depending portion is rotatable positioned in the first wedge opening, wherein
- the second angled surface is rotatably positioned relative to the first angled surface, and wherein
- the wedge angle is varied between zero and at least 5 degrees relative to said common plane by rotating the second angled surface relative to the first angled surface.
2 more elements
Dependencies are inferred from the claim text.