Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Including sleeve and distinct tapered expander
Reexamination Certificate
1999-02-11
2001-03-06
Saether, Flemming (Department: 3726)
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having separate expander means
Including sleeve and distinct tapered expander
C411S057100, C408S079000, C408S097000
Reexamination Certificate
active
06196779
ABSTRACT:
TECHNICAL FIELD
The invention relates to temporary fasteners used to align and secure a tool to at least one part.
BACKGROUND ART
In many environments it is necessary to temporarily secure a tool, such as a jig drill template or locating jig, to one or more parts while other operations, such as drilling and/or riveting operations, are performed. For example, temporary fasteners are often used in the aircraft industry to temporarily attach jig drill templates to a multi-layer structure in order to perform a drilling operation on the multi-layer structure. One disadvantage with prior art temporary fasteners is that the tool and the multi-layer structure must be simultaneously aligned so that the fasteners may be inserted therethrough. Furthermore, such temporary fasteners typically must be completely removed from the tool and the multi-layer structure in order to remove the tool from the multi-layer structure. As a result, the components of the multi-layer structure must then be realigned and secured together in order to complete drilling of full size holes through the components and/or to insert permanent fasteners through the components.
U.S. Pat. No. 5,275,515 discloses a fastener assembly including a locator pin which is inserted through aligned holes formed through a multi-layer structure and a drill plate. A slip bushing is placed over the locator pin, and a power fastener such as a CLECO™ fastener is used to engage one end of the locator pin for displacing the locator pin. A gauge pin is transversely positioned through the opposite end of the locator pin and pushes the multi-layer structure against the drill plate in response to displacement of the locator pin. Consequently, use of this fastener assembly requires access to both sides of the multi-layer structure. Furthermore, this fastener assembly is relatively complex and, therefore, difficult to use efficiently.
DISCLOSURE OF INVENTION
In accordance with the invention, a fastener for temporarily securing together at least one part and a tool includes a body having a longitudinal axis, a part engaging surface for bearing against the at least one part, and an outer surface that defines a guide bushing. A fastening mechanism projects axially from the body and is adapted to extend through the at least one part for securing the at least one part against the part-engaging surface. The fastener further includes an engaging member on the body, wherein the engaging member has a tool-engaging surface that is engageable with the tool for securing the tool to the at least one part.
The body preferably has a threaded portion, and the engaging member is preferably a threaded nut engageable with the threaded portion. Furthermore, the threaded nut preferably has a knurled exterior surface to facilitate hand-tightening of the nut.
REFERENCES:
patent: 1336012 (1920-04-01), Woods
patent: 1921316 (1933-08-01), Mattern
patent: 2136875 (1938-11-01), Blanc
patent: 2911860 (1959-11-01), Winslow
patent: 3663115 (1972-05-01), Vindez et al.
patent: 4537542 (1985-08-01), Pratt
patent: 4548533 (1985-10-01), Pratt
patent: 4916792 (1990-04-01), Haubus
patent: 4934885 (1990-06-01), Woods et al.
patent: 5275515 (1994-01-01), Leifsen
patent: 5303908 (1994-04-01), Halder
patent: 5358367 (1994-10-01), Yang
patent: 2103127 (1983-02-01), None
Brooks & Kushman P.C.
Saether Flemming
The Boeing Company
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