FASTENER INSERT HAVING A REPLACEABLE NUT

• US 3,678,981 A
• Filed: 10/05/1970
• Issued: 07/25/1972
• Est. Priority Date: 10/05/1970
• Status: Expired due to Term

• Current Assignee: Citicorp North America Inc (Citigroup Incorporated)
• Original Assignee: Ernest Heyworth
• Inventors: Heyworth, Ernest
• Primary Examiner(s): Allen, Edward C.
• Application Number:
  US05/078,066
• Time in Patent Office: 659 Days
• Field of Search: 151/41.76,41.7,41.73 285/86
• US Class Current: 411/108
• CPC Class Codes: F16B 37/04 Devices for fastening nuts to surfaces, e.g. sheets, plates nuts fastened behind a wall by a toggle-mechanism F16B13/0808; threaded inserts F16B37/122; measures against loss of bolts, nuts or pins F16B41/002
• CPC Class Codes: F16B 5/025 specially designed to compensate for misalignement or to eliminate unwanted play
• CPC Class Codes: Y10S 411/971 And side lock

Abstract

A fastener insert for a carrier part where the insert provides a '"'"''"'"''"'"''"'"'floating'"'"''"'"''"'"''"'"' characteristic for an easily replaceable internal nut so that the nut is self-adjusting; for example, to compensate for the misalignment of parts.

Claims

1. A fastener insert with a floating replacable nut comprising in combination a cylindrical housing defining a nut receiving chamber with an open end and an opposite end, the housing adapted to be cast into parent material and having an exterior with means to Prevent rotation and pull out with respect to the parent material, said chamber having a continuous inwardly extending raceway shoulder adjacent the opposite end of the housing and a retaining ring groove adjacent at its open end and three or more inwardly projecting lands along the innermediate portion of its length, said lands formed with concave inward faces defining a restricted opening in said chamber between upper and lower ends of said lands and said lands spaced with respect to each other to define keyways therebetween, the lower end of said lands and the raceway shoulder defining a raceway between them, a removably insertable nut having a substantially cylindrical nut body and a threaded interior for receiving a screw, said nut body having a body diameter smaller than the restricted opening of the housing and extended at its lower end with integral tabs shaped and spaced to easily enter into and slide along said keyways into said raceway, said tabs rotatable within the raceway if not restrained, said nut retained in said chamber by rotating the nut until the tabs underlie the lower ends of the lands, a straight shank non-resilient retainer removably insertable in said chamber, said retainer including an annular plate portion with depending leg segments inserted into said keyways and extending into said raceway between said nut tabs to prevent the nut from being rotated into alignment with said keyways, the annular plate portion of said retainer when inserted sitting immediately inwardly of said retaining ring groove, a retaining ring positioned in said retaining ring groove to prevent removal of said retainer, said nut body having a height corresponding to the length of the lands such that a nut body is almost entirely within the restricted opening of the chamber when the nut tabs are in said raceway and the outer end of said body lies adjacent the upper end of said lands, and said nut body and tabs proportioned with respect to said raceway, housing, and restricted opening to provide clearances to allow the nut to freely move transversely in any direction for a limited distance with respect to longitudinal axis of the housing whereby said nut is freely floatable while being held captive to the housing.