Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Tensioned along the longitudinal axis by a coaxial force...
Reexamination Certificate
1998-03-03
2001-07-03
Saether, Flemming (Department: 3627)
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Tensioned along the longitudinal axis by a coaxial force...
C411S916000, C411S397000, C411S432000
Reexamination Certificate
active
06254322
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates generally to threaded connectors for connecting two parts with one another.
Threaded connectors of this type are known in the art. Some known threaded connectors are formed as threaded bolts with or without a head, and with or without a nut. One of the threaded connectors is disclosed for example in my U.S. Pat. No. 5,318,397 as well as in my other patents. The bolts or threaded connectors can be further improved.
SUMMARY OF THE INVENTION
Accordingly, it is an object of present invention to provide a new bolt which is a further improvement of the existing bolts.
In keeping with these objects and with others which will become apparent hereinafter, one feature of present invention resides, briefly stated, in a bolt having an axis and used to connect two parts with one another, which has a threaded portion on one of its ends, and another portion axially spaced from the threaded portion and having a polygonal circumference, a friction washer connectable to the polygonal circumference and adapted to rest with a first facial area on one facial area of one of the parts to be connected, and a sleeve connectable to a thread of the threaded portion and abutting with one of its facial areas against a second facial area of the friction washer, so that when a force in one direction is applied to the bolt and a force in an opposite direction is applied to the sleeve, only the sleeve turns while the bolt is elongated or relaxed.
When the bolt is designed in accordance with the present invention, it has a simple construction and can be elongated and relaxed when needed.
The novel features which are considered as characteristic for the present invention are set forth in particular in the appended claims. The invention itself, however, both as to its construction and its method of operation, together with additional objects and advantages thereof, will be best understood from the following description of specific embodiments when read in connection with the accompanying drawings.
REFERENCES:
patent: 641319 (1900-01-01), Parbel
patent: 1333707 (1920-03-01), Dies
patent: 1769705 (1930-07-01), McGee
patent: 2292446 (1942-08-01), Huck
patent: 4433578 (1984-02-01), Hill
patent: 4622730 (1986-11-01), Steinbock
patent: 5318397 (1994-06-01), Junkers
patent: 5406867 (1995-04-01), Junkers
patent: 5533852 (1996-07-01), Matthews
patent: 5609454 (1997-03-01), Lee
patent: 5622465 (1997-04-01), Junkers
patent: 298 09 229 U1 (1999-03-01), None
patent: 2 564 767 (1985-11-01), None
patent: 351090 (1937-08-01), None
Saether Flemming
Striker Michael J.
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