Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Tensioned along the longitudinal axis by a coaxial force...
Reexamination Certificate
1999-10-22
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, C254S02900A
Reexamination Certificate
active
06254323
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates generally to threaded connectors for connecting two parts with one another, such as bolts and the like. The present invention also relates to a fastening device provided with the bolt.
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, as well as a fastening device provided with it.
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.
In accordance with another feature of the present invention, a fastening device is provided which includes the inventive bolt and a tool cooperating with it.
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: 1227877 (1917-05-01), Brisbin
patent: 3916734 (1975-11-01), Sawan
patent: 5499558 (1996-03-01), Junkers
patent: 5539970 (1996-07-01), Junkers
patent: 5609454 (1997-03-01), Lee
patent: 5640749 (1997-06-01), Junkers
patent: 5946789 (1999-09-01), Junkers
patent: 44 05 974 (1995-05-01), None
patent: 0 940 590 (1999-09-01), None
patent: 351090 (1937-08-01), None
Saether Flemming
Striker Michael J.
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