Patent ID: 8157056

Claim:
A coupler for rotatably joining sections of adjustable bearing arms of a standoff arrangement for a ladder, said coupler comprising a. a hub and a lug engageable in said hub, each of said hub and said lug being connectable to a respective section of an adjustable bearing arm, b. said hub including a central cavity shaped to accept said lug, said cavity having an annular inner wall and a base, and having a plurality of aligned pairs of attachment apertures in said wall, c. a seating element at said base engageable with said lug, d. said lug including a head having an annular outer wall shaped to fit within said annular inner wall, said head having a bore therethrough oriented to align with a selected one of said aligned pairs of attachment apertures, and e. said head having a crown, said crown having a plurality of intervals shaped to accommodate said seating element.