I came across these two triangle nuts a few years ago and could not find any information on them. However recently 8/2024, somebody put a few patent drawings up for sale on ebay, and to my surprise one of the drawings was of these nuts. Partial mystery solved!
Next questions are:
- What is the name of these nuts?
- How many sizes were made?
- Were they ever sold to the public?

Inventor: John Brent Burkey
Denver Colorado USA
Patent filed: June 17, 1976 - Patent Date: April 4, 1978
Three different nut variations are shown in the Patent drawings as Fig 1 - Fig 10. The Burkey nuts shown in the photos are Fig 1 - Fig 4.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an assembly view of a preferred form of chock assembly representing typical placement of the chock in a crevice.
FIG. 2 is a view partially in section of the chock assembly shown in FIG. 1.
FIG. 3 is an elevational view of the preferred form of chock.
FIG. 4 is a plan view of the preferred form of chock.
FIG. 5 is a plan view of a modified form of chock.
FIG. 6 is an elevational view of the modified form of chock shown in FIG. 5.
FIG. 7 is a plan view of the opposite end of the modified form of chock shown in FIGS. 5 and 6.
FIG. 8 is a plan view of another modified form of chock.
FIG. 9 is an elevational view of the modified form of chock shown in FIG. 8; and
FIG. 10 is a plan view of the opposite end of the modified form of chock shown in FIGS. 8 and 9.