Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Having securing element projecting through aperture in sleeve
Reexamination Certificate
2002-02-08
2003-07-08
Wilson, Neill (Department: 3679)
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having separate expander means
Having securing element projecting through aperture in sleeve
C411S061000, C411S074000, C411S347000
Reexamination Certificate
active
06588997
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a bolt fixing assembly. In particular, the present invention relates to a bolt fixing assembly comprising a bolt body that may urge ribs of a pressing member to turn, thereby pressing against resilient toothed plates of a resilient sleeve such that the resilient toothed plates bite an inner wall defining an engaging hole of a plate. An object is thus fixed on the plate.
2. Description of the Related Art
FIG. 1
of the drawings illustrates a conventional bolt fixing assembly comprising a bolt body
91
and an eccentric sleeve
92
. The bolt body
91
includes a shank
911
, and the eccentric sleeve
92
includes a central hole
921
, an eccentric screw
922
, and a protrusion
923
. The shank
911
of the bolt body
91
is extended through a hole
931
in a hinge base
93
and a hole
941
in a positioning plate
94
. The shank
911
of the bolt body
91
is force-fitted in the central hole
921
of the eccentric sleeve
92
. When the bolt body
91
is turned, the eccentric screw
922
of the eccentric sleeve
92
irreversibly bites an inner wall defining an engaging hole
95
of a plate
96
. In addition, an engaging member
942
on the positioning plate
94
engages with the protrusion
923
of the eccentric sleeve
92
to thereby restrain rotational movement of the eccentric screw
922
.
Although the bolt fixing assembly may tightly fix the hinge base
93
to the plate
96
, the user must apply a considerable force to turn the bolt body
91
so as to cause the eccentric screw
922
of the eccentric sleeve
92
to firmly bite the inner wall defining the engaging hole
95
of the plate
96
. The assembly procedure is apparently inconvenient, and the slot
912
in the bolt body
91
could be damaged by the considerable rotational force for driving the bolt body
91
. Further, the inner wall defining the engaging hole
95
of the plate
96
is damaged at the time the eccentric screw
922
is inserted into the engaging hole
95
. Recovery of the engaging hole
95
is thus impossible.
SUMMARY OF THE INVENTION
It is the primary object of the present invention to provide a bolt fixing assembly comprising a bolt body, a resilient sleeve, and a pressing member received in the resilient sleeve. The resilient sleeve receiving the pressing member is loosely mounted in an engaging hole of a plate, and a tool is used to turn the bolt body to urge resilient toothed plate of the resilient sleeve to bite an inner wall defining the engaging hole of the plate. Thus, the bolt fixing assembly in accordance with the present invention allows easy turning to the bolt body, and the fixing can be achieved quickly. In addition, the bolt can be removed if the bolt body is turned in a reverse direction such that the engaging hole of the plate would not be damaged. Thus, the bolt fixing assembly can be used with the same engaging hole of the plate for many times.
A bolt fixing assembly in accordance with the present invention comprises a bolt body, a resilient sleeve, and a pressing member. The bolt body includes a head and a shank. The resilient sleeve includes plural toothed plates integrally formed on an outer periphery thereof. Each resilient toothed plate is initially located in an interior space of the resilient sleeve and movable along a radially outward direction to a position beyond the outer periphery of the resilient sleeve. The pressing member includes a central hole for receiving the shank of the bolt body. The central hole has an inner periphery configured corresponding to an outer periphery of the shank. The pressing member includes plural ribs for respectively, selectively urging the resilient toothed plates of the resilient sleeve to the position beyond the outer periphery of the resilient sleeve.
The resilient sleeve is loosely mounted in an engaging hole of a plate. The bolt body is extended through a hole of an object to be fixed to the plate into the central hole of the pressing member. The resilient sleeve is turned to drive the pressing member to turn. The ribs of the pressing member urge the resilient toothed plates of the resilient sleeve to the position beyond the outer periphery of the resilient sleeve. The teeth of the resilient toothed plates bite an inner wall defining the engaging hole of the plate. Thus, the object is fixed to the plate.
REFERENCES:
patent: 3269251 (1966-08-01), Bass
patent: 3417525 (1968-12-01), Dashio
patent: 4902179 (1990-02-01), Harker
patent: 5704752 (1998-01-01), Logerot
Bacon & Thomas PLLC
King Slide Works Co., Ltd.
Wilson Neill
LandOfFree
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