Fastening devices, assemblies and related methods

摘要

Fastening devices are disclosed herein with variations on how said devices resist loosening or un-fastening from a structure or structures. In some examples, the fastening devices accomplish the removal resistant condition by using a spring component engaging ridged surfaces. The spring component generally consists of a spring ring conveniently coiled to a canting position. One exemplary design is characterized by incorporating a screw element with its head underside surface being ridged and a lock element with a ridged topside surface and engaging the two ridges surfaces. Another exemplary design is characterized by a screw element having a head outer sidewall being ridged for cooperating with a bore having a ridged inner sidewall. The bore can be part of a first body or structure or a lock element.

主权项

1. A removal resistant fastening device for securing a first body to a second body comprising:
a screw element comprising a screw head having a screw head side wall and a shank; a canted coil spring comprising a plurality of coils; a housing comprising a bore having a side wall defining a first opening of a first diameter and a second opening of a second smaller diameter; the first opening having the screw head disposed therein and the second opening being a through hole and having the shank passing therethrough; wherein at least one of the screw head and the bore of the housing comprises surfaces having ridges; and wherein at least ten coils of the plurality of coils engage the ridges.