He was not a sex educator, a sex worker or a political figure. No case law was established in his name. But to cultural historians, anthropologists, sex educators and members of the now sprawling alternative-sex community known by the umbrella acronym of B.D.S.M. — for bondage, dominance, sadism and masochism — or by the more prosaic (and historical) term “kink,” Pat Bond, to use the pseudonym he preferred, was a foundational figure, applauded at conferences, noted in academic papers and hailed as an elder by those who shared his interest in role-playing sex.
A modest, elfin man with a Van Dyke beard that turned snowy with age, Mr. Bond had long had masochistic fantasies but had never acted on them until he was 44.