Patent US3822899A successfully refreshed from Google Patents.
Patent US4480513A successfully refreshed from Google Patents.
US4480513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bolt-lock structure
Assignee: McGard LLC
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Filing: 1981-11-16
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Granted: 1984-11-06
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Expires: 2001-11-16
Abstract
Abstract A bolt type of lock structure including an elongated bolt member, first and second externally threaded ends on the bolt member, first and second nuts of frustoconical configuration threadably mounted on the first and second threaded ends, first and second faces on the nuts for receiving key members for tightening and loosening the nuts, an anaerobic thread locking compound on the threads, the bolt member being relatively soft throughout to withstand impact and having a hardened zone in a central area wherein it is exposed to chiseling or sawing. A nut of the type described above including a threaded bore in the face which receives a screw for securing the key member thereto. A stud having oppositely threaded ends and an irregular axial bore in one end for receiving a wrench and a hardened surface portion between the threaded ends.
Inventors
- 👤 Lewis D. McCauley
- 👤 John H. Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:38
CPC Classifications
F; F16; F16B; F16B23/00; F16B23/0007; F16L; F16L23/00; F16L23/003
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
168 words
In a structure having a pair of flanges with a space therebetween with aligned holes in said flanges, a locking bolt structure extending through said aligned holes comprising an elongated bolt member, first and second externally threaded ends on said elongated bolt member, first and second nuts of solid of revolution configuration, first and second internally threaded bores on said first and second nuts, respectively, for mating engagement with said first and second externally threaded ends, respectively, first and second outer faces on said first and second nuts, respectively, first and second key-receiving depressions of curved endless configuration in said first and second faces, respectively, for receiving mating key members for selectively tightening and loosening said nuts, a hardened central portion on said elongated bolt member intermediate said first and second externally threaded ends, said hardened central portion being located in said space between said flanges, relatively ductile ends on said bolt member outwardly of said central portion, and a relatively ductile core within said hardened central portion.
Claim 2
Dependent Claim
168 words
In a structure having a pair of flanges with a space therebetween with aligned holes in said flanges, a locking bolt structure extending through said aligned holes comprising an elongated bolt member, first and second externally threaded ends on said elongated bolt member, first and second nuts of solid of revolution configuration, first and second internally threaded bores on said first and second nuts, respectively, for mating engagement with said first and second externally threaded ends, respectively, first and second outer faces on said first and second nuts, respectively, first and second key-receiving depressions of curved endless configuration in said first and second faces, respectively, for receiving mating key members for selectively tightening and loosening said nuts, a hardened central portion on said elongated bolt member intermediate said first and second externally threaded ends, said hardened central portion being located in said space between said flanges, relatively ductile ends on said bolt member outwardly of said central portion, and a relatively ductile core within said hardened central portion.
Claim 3
Dependent Claim
19 words
A lock structure as set forth in claim 1 including a thread-locking compound between said external and internal threads.
Claim 4
Dependent Claim
17 words
A lock structure as set forth in claim 2 wherein said thread-locking compound is an anaerobic coating.
Claim 5
Dependent Claim
40 words
A lock structure as set forth in claim 1 wherein said nuts are frustoconical with larger and smaller bases, and wherein said first and second tapped bores are in said larger bases, and wherein said smaller bases comprises said faces.
Claim 6
Dependent Claim
145 words
A lock structure comprising an elongated bolt member, first and second externally threaded ends on said bolt member, first and second nuts of solid of revolution configuration, first and second internally threaded bores on said first and second nuts, respectively, for mating engagement with said first and second externally threaded ends, respectively, first and second outer faces on said first and second nuts, respectively, first and second key-receiving depressions of endless curved configuration in said first and second faces, respectively, for receiving mating key members for selectively tightening and loosening said nuts, a tapped bore in at least one of said outer faces, a key member having a flange for mating engagement with one of said depressions, a bore extending through said key member, and a screw extending through said bore for reception in said tapped bore for locking said key member to said nut.
Claim 7
Dependent Claim
145 words
A lock structure comprising an elongated bolt member, first and second externally threaded ends on said bolt member, first and second nuts of solid of revolution configuration, first and second internally threaded bores on said first and second nuts, respectively, for mating engagement with said first and second externally threaded ends, respectively, first and second outer faces on said first and second nuts, respectively, first and second key-receiving depressions of endless curved configuration in said first and second faces, respectively, for receiving mating key members for selectively tightening and loosening said nuts, a tapped bore in at least one of said outer faces, a key member having a flange for mating engagement with one of said depressions, a bore extending through said key member, and a screw extending through said bore for reception in said tapped bore for locking said key member to said nut.
Claim 8
Dependent Claim
75 words
A lock structure as set forth in claim 5 including a second tapped bore in the other of said outer faces, a second key member having a flange for mating engagement with the other of said depressions, a second bore extending through said second key member, and a second screw extending through said second bore for reception in said second tapped bore for locking said second key member to said other of said outer faces.
Claim 9
Dependent Claim
158 words
A stud for mounting in a tapped opening comprising an elongated member, first and second externally threaded ends on said elongated member, a wrench-receiving bore extending axially of said elongated member in at least said first end of said elongated member, a surface hardened portion on said elongated member between said threaded ends and adjacent said second threaded end, a nut of solid of revolution configuration, a tapped bore in said nut for engagement with said first threaded end, an outer face on said nut, a key-receiving depression of endless curved configuration in said outer face, a second tapped bore in said outer face, said second tapped bore being of smaller size than said tapped bore, a key member having a flange for mating engagement with said key-receiving depression, a bore extending through said key member, and a screw extending through said bore for reception in said second tapped bore for locking said key member to said nut.
Claim 10
Dependent Claim
158 words
A stud for mounting in a tapped opening comprising an elongated member, first and second externally threaded ends on said elongated member, a wrench-receiving bore extending axially of said elongated member in at least said first end of said elongated member, a surface hardened portion on said elongated member between said threaded ends and adjacent said second threaded end, a nut of solid of revolution configuration, a tapped bore in said nut for engagement with said first threaded end, an outer face on said nut, a key-receiving depression of endless curved configuration in said outer face, a second tapped bore in said outer face, said second tapped bore being of smaller size than said tapped bore, a key member having a flange for mating engagement with said key-receiving depression, a bore extending through said key member, and a screw extending through said bore for reception in said second tapped bore for locking said key member to said nut.
Claim 11
Dependent Claim
24 words
A stud as set forth in claim 7 wherein said portions of said elongated member other than said surface hardened portion are relatively ductile.
Claim 12
Dependent Claim
178 words
In a structure having a flange and member and a space between said flange and said member, with a bore in said flange and a tapped opening in said member in alignment with said bore comprising an elongated bolt member, first and second externally threaded ends on said elongated bolt member, a nut of solid of revolution configuration, an internally threaded bore on said nut for mating engagement with said first threaded end, said second threaded end being received in said tapped opening in said member, an outer face on said nut, a key-receiving depression of endless curved configuration in said outer face for receiving a mating key member for selectively tightening and loosening said nut to cause it to bear on said flange, a hardened central portion on said elongated bolt member intermediate said first and second externally threaded ends, said hardened central portion being located in said space between said flange and said member, relatively ductile ends on said bolt member outwardly of said central portion, and a relatively ductile core within said hardened central portion.
Claim 13
Dependent Claim
178 words
In a structure having a flange and member and a space between said flange and said member, with a bore in said flange and a tapped opening in said member in alignment with said bore comprising an elongated bolt member, first and second externally threaded ends on said elongated bolt member, a nut of solid of revolution configuration, an internally threaded bore on said nut for mating engagement with said first threaded end, said second threaded end being received in said tapped opening in said member, an outer face on said nut, a key-receiving depression of endless curved configuration in said outer face for receiving a mating key member for selectively tightening and loosening said nut to cause it to bear on said flange, a hardened central portion on said elongated bolt member intermediate said first and second externally threaded ends, said hardened central portion being located in said space between said flange and said member, relatively ductile ends on said bolt member outwardly of said central portion, and a relatively ductile core within said hardened central portion.
Claim 14
Dependent Claim
17 words
A stud as set forth in claim 9 including thread-locking compound between said nut and elongated member.
Claim 15
Dependent Claim
16 words
A stud as set forth in claim 9 wherein said solid of revolution configuration is frustoconical.
Claim 16
Dependent Claim
24 words
In a structure as set forth in claim 9 including a wrench-receiving bore extending axially of said elongated member at said first threaded end.
Claim 17
Dependent Claim
30 words
In a structure as set forth in claim 9 including thread locking compound between said nut and said first threaded end and between said member and said second threaded end.
Claim 18
Dependent Claim
112 words
A nut and key combination comprising: a nut comprising a first body portion of solid revolution configuration having first and second opposite faces, a first internally threaded bore extending axially inwardly from said first face, key-receiving depression means having a predetermined curved periphery extending inwardly from said second face, a second internally threaded bore extending axially inwardly from said second face; and a key having a second body portion, a flange on said second body portion for mating engagement with said predetermined curved periphery of said depression means, and a screw mounted on said second body portion for reception in said second internally threaded bore for locking said key to said nut.
Claim 19
Dependent Claim
112 words
A nut and key combination comprising: a nut comprising a first body portion of solid revolution configuration having first and second opposite faces, a first internally threaded bore extending axially inwardly from said first face, key-receiving depression means having a predetermined curved periphery extending inwardly from said second face, a second internally threaded bore extending axially inwardly from said second face; and a key having a second body portion, a flange on said second body portion for mating engagement with said predetermined curved periphery of said depression means, and a screw mounted on said second body portion for reception in said second internally threaded bore for locking said key to said nut.
Claim 20
Dependent Claim
32 words
A nut and key combination as set forth in claim 14 wherein said second internally threaded bore is located within said curved periphery and is smaller than said first internally threaded bore.
Claim 21
Dependent Claim
18 words
A nut and key combination as set forth in claim 15 wherein said first body portion is frustoconical.
References Cited (Backward Citations)
US1457994A
Cited
US2133146A
Cited
US3554258A
Cited
US3874258A
Cited
US4191677A
Cited
US4373309A
Cited
US4253509A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-11-06 | 1988-05-07 | 1988-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-06 | 1992-05-07 | 1992-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-06 | 1996-05-07 | 1996-11-06 | $7700.00 | Window Closed / Lapsed |