Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Washer structure – Spacer
Reexamination Certificate
2002-03-26
2004-09-14
Saether, Flemming (Department: 3679)
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Washer structure
Spacer
C411S432000
Reexamination Certificate
active
06789993
ABSTRACT:
TECHNICAL FIELD
The invention relates to a fastener capable of clamping members, which are to be clamped and are spaced a certain spacing from each other, while maintaining a clearance therebetween and absorbing some possible scatter in the spacing or some possible axial deviation.
BACKGROUND OF THE INVENTION
U.S. Pat. No. 5,288,191 for Edvald Rucker et al discloses a conventional fastener of the same kind as described above, which fastener involves a high manufacturing cost since it is composed of many constituent elements and a part of the elements is special in shape. Further, since forces required for movements of the constituent elements for holding of a predetermined spacing rely on a pushing force of and torque of a bolt-like member inserted into the constituent elements under frictions, an operator for performing clamping of the fastener is required to rotate the bolt-like member while applying a pushing force, so that handling of the fastener is complicated. In addition, since the fastener has no positive loosening preventive function, application of the fastener has been difficult under circumstances under much vibrations.
DISCLOSURE OF THE INVENTION
The invention has been devised in order to solve the above-mentioned problem of prior fasteners, and this problem can be solved by a fastener for members (M
1
, M
2
) to be clamped with a certain spacing therebetween, the fastener comprising a nut (
10
) having one end surface of a substantially cylindrical-shaped main body adapted to be latched by one (M
1
) of the members to be clamped, the nut being formed on an inner peripheral surface thereof with a first thread (
13
) comprising an internal thread capable of threading onto a thread of a bolt (
40
) and a second thread (
14
) comprising aninternal thread inverse to thread ridges of the thread of the bolt and capable of threading onto a first thread (
21
) of a movable collar (
20
) comprising an external thread, which is formed on an outer peripheral surface of a substantially cylindrical-shaped main body of the movable collar (
20
) and is inverse to thread ridges of the thread of the bolt; the movable collar (
20
) having in an inner bore thereof a torque transmitting means capable of transmitting torque of the bolt, which is inserted axially into the inner bore, to the movable collar through thread—thread engagement; and the bolt (
40
) having a shank (
42
), on an outer peripheral surface of which is formed a thread comprising an external thread capable of threading into the first thread (
13
) of the nut; and wherein a portion of the thread of the bolt comprises special thread ridges (
422
), by which a frictional force greater than that obtained in engagement between normal threads is imparted to the thread—thread engagement.
REFERENCES:
patent: 2842180 (1958-07-01), Brown
patent: 3294139 (1966-12-01), Preziosi
patent: 3498352 (1970-03-01), Duffy
patent: 3554258 (1971-01-01), Duffy
patent: 3579684 (1971-05-01), Duffy
patent: 3787222 (1974-01-01), Duffy
patent: 3858262 (1975-01-01), Duffy
patent: 3896760 (1975-07-01), Duffy
patent: RE28812 (1976-05-01), Duffy
patent: 3995074 (1976-11-01), Duffy et al.
patent: 4043239 (1977-08-01), DeFusco
patent: 4054688 (1977-10-01), Duffy et al.
patent: 4100882 (1978-07-01), Duffy et al.
patent: 4120993 (1978-10-01), Duffy et al.
patent: 4682906 (1987-07-01), Ruckert
patent: 5288191 (1994-02-01), Ruckert et al.
patent: 6135689 (2000-10-01), Matsunami
patent: 6357953 (2002-03-01), Ballantyne
patent: 6431602 (2002-08-01), Ralko
patent: 91 12 424.7 (1992-01-01), None
patent: 42 20 842 (1994-01-01), None
patent: 44 26 785 (1994-07-01), None
patent: 2 570 769 (1986-03-01), None
Gotou Mitsushige
Ito Shuji
Ozawa Junzo
Aoyama Seisakusho Co., Ltd.
Saether Flemming
LandOfFree
Fastener for clamping members having a certain spacing from... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fastener for clamping members having a certain spacing from..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fastener for clamping members having a certain spacing from... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3201921