GB1374628A – Fastening means
– Google Patents
GB1374628A – Fastening means
– Google Patents
Fastening means
Info
Publication number
GB1374628A
GB1374628A
GB5001171A
GB5001171A
GB1374628A
GB 1374628 A
GB1374628 A
GB 1374628A
GB 5001171 A
GB5001171 A
GB 5001171A
GB 5001171 A
GB5001171 A
GB 5001171A
GB 1374628 A
GB1374628 A
GB 1374628A
Authority
GB
United Kingdom
Prior art keywords
screw
flank
thread
nut
displaced
Prior art date
1970-11-09
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB5001171A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
1970-11-09
Filing date
1971-10-27
Publication date
1974-11-20
1971-10-27
Application filed by Individual
filed
Critical
Individual
1974-11-20
Publication of GB1374628A
publication
Critical
patent/GB1374628A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING
F16B39/00—Locking of screws, bolts or nuts
F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
F16B39/30—Locking exclusively by special shape of the screw-thread
Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
Y10S411/924—Coupled nut and bolt
Y10S411/929—Thread lock
Y10S411/938—Distorted thread
Abstract
1374628 Self-tapping screw R J EVANS 27 Oct 1971 [9 Nov 1970] 50011/71 Heading B3N [Also in Division F2] A self-locking screw 11 has a displaced or widened thread portion 30 such that as the screw is engaged in a nut 40 whose thread grooves are wider than the screw threads 16 (except for the portion 30) and whose minor thread diameter, prior to insertion of the screw, is less than the diameter across the roots 26 of the screw shank (apart from lead and ramp portions 18, 20 adjacent thread portion 30), material from the crests of the nut thread is displaced into the flank clearance, as at 50, to lock the nut and screw. When the screw is withdrawn the flank 34 of the portion 30 engages and reworks the displaced material 50, forcing it back to the crests of the nut thread, thereby enabling the nut and screw assembler to be used several times. Moreover initially the screw 11 may be self tapping so that when inserted in a suitably bored hole it simultaneously taps the bore of the hole and displaces the material of the crests into the flank. The material is forced back to the crest on withdrawal of the screw. The thread portion 30 may be enlarged as shown at 30 in Fig. 3 or displaced along the axis of the screw as shown at 30A in Fig. 5. Alternatively the angle of the flank 34B of the thread may be such that the flank is less steep and if desired its opposite flank 36B move stays Fig. 6. A further arrangement ensures that the displacement causes material in the groove of the nut to be moved to the crest where its root of the srcew moves it back between a groove of the unit and flank of the screw, Fig. 7 (not shown).In addition the screw may have an enlarged root portion at the outer end which provides additional resistance to the disengagement of the screw and nut, Fig. 8 (not shown). The enlargement of the portion 30 may be of the lower portion only of the thread, Fig. 9 (not shown), or the steepness of the flank may be increased to provide the widened potion, Figs. 11 and 12, not shown.
GB5001171A
1970-11-09
1971-10-27
Fastening means
Expired
GB1374628A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US8800870A
1970-11-09
1970-11-09
Publications (1)
Publication Number
Publication Date
GB1374628A
true
GB1374628A
(en)
1974-11-20
Family
ID=22208609
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB5001171A
Expired
GB1374628A
(en)
1970-11-09
1971-10-27
Fastening means
Country Status (5)
Country
Link
US
(1)
US3721283A
(en)
JP
(1)
JPS5210174B1
(en)
CA
(1)
CA938207A
(en)
GB
(1)
GB1374628A
(en)
IT
(1)
IT942259B
(en)
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2172950A
(en)
*
1985-03-30
1986-10-01
James H Thorpe
Self-locking threading and method of forming it
Families Citing this family (20)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3885613A
(en)
*
1970-11-09
1975-05-27
Robert J Evans
Self-locking fastener
US3927503A
(en)
*
1973-12-26
1975-12-23
Standard Pressed Steel Co
Prevailing torque fastener
JPS5590511U
(en)
*
1978-12-18
1980-06-23
US4341497A
(en)
*
1980-04-02
1982-07-27
Microdot Inc.
Prevailing torque bolt
US4351626A
(en)
*
1980-04-18
1982-09-28
Holmes Horace D
Self-locking threaded fastener
US4331414A
(en)
*
1980-05-12
1982-05-25
Wheatley Jr Thomas
Leakproof stud bolt incorporating modified thread
US4734002A
(en)
*
1986-07-11
1988-03-29
Holmes Horace D
Locking thread form for male fastener
US6464439B1
(en)
1997-08-04
2002-10-15
Bernhard M. Janitzki
Low tolerance threaded fastener
US5944465A
(en)
1997-08-04
1999-08-31
Janitzki; Bernhard M.
Low tolerance threaded fastener
US6332741B1
(en)
*
2000-09-19
2001-12-25
Textron, Inc.
Masonry anchor device
US7334975B2
(en)
2001-08-20
2008-02-26
Maclean-Fogg Company
Fastener assembly
US7438512B2
(en)
2001-08-20
2008-10-21
Maclean-Fogg Company
U-bolt assembly
US6749386B2
(en)
2001-08-20
2004-06-15
Maclean-Fogg Company
Locking fastener assembly
US7793989B2
(en)
*
2004-07-14
2010-09-14
Pinckney Jr Robert
Locking connector with depressions
US7506901B2
(en)
*
2004-07-14
2009-03-24
Robert Pinckney
Resilient locking connection
US20070237604A1
(en)
*
2006-04-07
2007-10-11
Janitzki Bernhard M
Low tolerance threaded fastener
JP4512666B1
(en)
*
2009-08-10
2010-07-28
甲府精鋲株式会社
Locking screw
US9121430B2
(en)
*
2010-02-26
2015-09-01
Illinois Tool Works Inc.
Wave thread form
EP3449139B1
(en)
*
2016-04-29
2023-01-11
Infastech Intellectual Properties Pte. Ltd.
Anti-vibration thread form
US11497609B2
(en)
2019-04-26
2022-11-15
Warsaw Orthopedic, Inc.
Retention system and method
1970
1970-11-09
US
US00088008A
patent/US3721283A/en
not_active
Expired – Lifetime
1971
1971-10-22
CA
CA125862A
patent/CA938207A/en
not_active
Expired
1971-10-27
GB
GB5001171A
patent/GB1374628A/en
not_active
Expired
1971-11-02
IT
IT53843/71A
patent/IT942259B/en
active
1971-11-09
JP
JP46089379A
patent/JPS5210174B1/ja
active
Pending
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2172950A
(en)
*
1985-03-30
1986-10-01
James H Thorpe
Self-locking threading and method of forming it
Also Published As
Publication number
Publication date
CA938207A
(en)
1973-12-11
JPS5210174B1
(en)
1977-03-22
US3721283A
(en)
1973-03-20
IT942259B
(en)
1973-03-20
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Expansion dowels to be fixed inside conically enlarged drilled holes
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(en)
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Wire coil bolt lock
Legal Events
Date
Code
Title
Description
1975-04-03
PS
Patent sealed [section 19, patents act 1949]
1976-12-31
PLE
Entries relating assignments, transmissions, licences in the register of patents
1988-06-22
PCNP
Patent ceased through non-payment of renewal fee
