Self-piercing nut
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Aug 18, 2005
app pub date -
Feb 7, 2005
filing date -
Feb 16, 2004
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A self-piercing nut has a main threaded cylinder (2) and a pilot (5) surrounding a threaded bore (3). The main cylinder has a lower end continuing to a flange (4), with the pilot (5) protruding from a central bottom of the flange so as to pierce a hole in a metal panel (11). A skirt (7) depends from the flange's periphery to serves as a seat (8) contacting the panel. An annular groove (9) is defined between the pilot (5) and skirt (7) such that the pilot is projected beyond the seat (8). The end face (6) of pilot has an outer diameter `B` larger than that `A` of the lower end of main cylinder (2). The outer periphery of pilot (5) is tapered to decrease its diameter inwards and to-wards the nut axis, and a corrugation (10) is formed in the outer periphery or in the inner periphery of skirt (7).
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