Patent US4729707A successfully refreshed from Google Patents.
US4729707A
Expired / Lapsed
US
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Double end stud
Assignee: Kawasaki Motors Ltd
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Filing: 1985-12-26
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Granted: 1988-03-08
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Expires: 2005-12-26
Abstract
Abstract A double end stud has a shank member including a central slide shank portion and threaded portions formed coaxially on both axial ends of the slide shank portion. The threaded portions are externally threaded in opposite directions. The double end stud also has a nut member carried by the slide shank portion of the shank member slidably in the axial direction but not rotatably with respect to the slide shank portion. In use, the nut portion is moved axially as the threaded portions are screwed into female thread portions of the two structural members to be connected, so that the depth of penetration of the double end stud into both structural members are optimized to ensure a high strength of connection between these structural members.
Inventors
- 👤 Yoshiki Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:54
CPC Classifications
F; F16; F16B; F16B35/00; F16B35/04; F16B35/041; F16B35/042; Y; Y10; Y10T; Y10T403/00; Y10T403/29; Y10T403/293
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
84 words
A double end stud for joining two structural members, each provided with guide bores, comprising a shank member having: a central slide shank portion; portions coaxially threaded in opposite directions on alternate sides of said central slide shank portion; a nut member on said central slide shank portion slidable in the axial direction but not rotatable about said central slide shank portion; and means adapted to align the stud with guide bores of structural members including guide shank portions formed on said shank portions.
Claim 2
Dependent Claim
84 words
A double end stud for joining two structural members, each provided with guide bores, comprising a shank member having: a central slide shank portion; portions coaxially threaded in opposite directions on alternate sides of said central slide shank portion; a nut member on said central slide shank portion slidable in the axial direction but not rotatable about said central slide shank portion; and means adapted to align the stud with guide bores of structural members including guide shank portions formed on said shank portions.
Claim 3
Dependent Claim
21 words
A double end stud according to claim 1 wherein said central slide shank portion is provided with a substantially square cross-section.
Claim 4
Dependent Claim
24 words
A double end stud according to claim 2 wherein said nut member is provided with an internal slidable surface having a substantially square cross-section.
Claim 5
Dependent Claim
24 words
A double end stud according to claim 1 wherein said central slide shank portion is provided with serrations formed on the outer surface thereof.
Claim 6
Dependent Claim
33 words
A double end stud according to claim 4 wherein said nut member is provided with a slidable surface having serrations commensurate with those formed on the surface of said central slide shank portion.
Claim 7
Dependent Claim
61 words
A double end stud according to claim 1 wherein the axial length of said central slide shank portion is greater than the axial thickness of said nut member but is less than the sum of the axial thickness of said nut member and the axial depth of a clearance hole adapted to receive a threaded portion of said double end stud.
Claim 8
Dependent Claim
22 words
A double end stud according to claim 1 wherein said guide shank portion is provided with at least one tapered end surface.
Claim 9
Dependent Claim
17 words
A double end stud according to claim 7 wherein said tapered end surface has a conical configuration.
Claim 10
Dependent Claim
27 words
A double end stud according to claim 1 wherein said guide shank portions are provided between said central slide shank portion and each of said threaded portions.
Claim 11
Dependent Claim
23 words
A double end stud according to claim 1 wherein said guide shank portions project outwardly from the outer ends of said threaded portions.
Claim 12
Dependent Claim
25 words
A double end stud according to claim 9 wherein the diameters of said threaded portions are less than the diameters of the guide shank portions.
Claim 13
Dependent Claim
24 words
A double end stud according to claim 10 wherein the diameters of said guide shank portions are less than those of the threaded portions.
Claim 14
Dependent Claim
52 words
A double end stud according to claim 1 wherein said guide shank portions are provided between said central slide shank portion and each of said threaded portions and the sum of the axial lengths of said central slide portion and said guide shank portion exceeds the axial thickness of said nut member.
Claim 15
Dependent Claim
20 words
A double end stud according to claim 1 wherein said guide shank portion is provided on said slide shank portion.
Claim 16
Dependent Claim
66 words
A double end stud according to claim 14 wherein the axial thickness of said nut member is greater than the axial length of said central slide shank portion, and the axial length of said threaded portion is greater than the length of the associated guide bore of the structure measured from a surface of said structure to the beginning of a threaded portion of the bore.
Claim 17
Dependent Claim
21 words
A double end stud according to claim 14 wherein said central slide shank portion is provided with a substantially square cross-section.
Claim 18
Dependent Claim
22 words
A double end stud according to claim 11 wherein said guide shank portion is provided with at least one tapered end surface.
Claim 19
Dependent Claim
17 words
A double end stud according to claim 17 wherein said tapered end surface has a conical configuration.
Claim 20
Dependent Claim
22 words
A double end stud according to claim 12 wherein said guide shank portion is provided with at least one tapered end surface.
Claim 21
Dependent Claim
20 words
A double end stud accoding to claim 11 wherein said guide shank portion id provided on said slide shank portion.
Claim 22
Dependent Claim
21 words
A double end stud according to claim 20 wherein said central slide shank portion is provided with a substantially square cross-section.
Claim 23
Dependent Claim
24 words
A double end stud according to claim 21 wherein said nut member is provided with an internal slidable surface having a substantially square cross-section.
Claim 24
Dependent Claim
17 words
A double end stud according to claim 19 wherein said tapered end surface has a conical configuration.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-03-08 | 1991-09-07 | 1992-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-08 | 1995-09-07 | 1996-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-08 | 1999-09-07 | 2000-03-08 | $7700.00 | Window Closed / Lapsed |