Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Impact driven fastener – e.g. – nail – spike – tack – etc. – Plural axially aligned heads
Patent
1996-12-24
1998-05-26
Saether, Flemming
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Impact driven fastener, e.g., nail, spike, tack, etc.
Plural axially aligned heads
411533, 411542, 411923, F16B 1502, F16B 4302
Patent
active
057555451
ABSTRACT:
A means for temporarily securing a tarpaulin or like fabric having a series of grommeted holes about its periphery. The means comprises a double headed nail with an apron or apron frictionally engaging the nail immediately below the second or lower head.
REFERENCES:
patent: 100355 (1870-03-01), Baumgartner
patent: 750070 (1904-01-01), Stevenson
patent: 1335756 (1920-04-01), Scarff
patent: 1705371 (1929-03-01), Mehlman
patent: 1767565 (1930-06-01), Thrift
patent: 2093261 (1937-09-01), Willson
patent: 3750523 (1973-08-01), Fujita
patent: 4712802 (1987-12-01), Hewison
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