US3635272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Threaded fastening device and method of making the same
Assignee: Individual
•
Filing: 1969-11-06
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Granted: 1972-01-18
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Expires: 1989-11-06
Abstract
Abstract A cylindrically enlarged end of an otherwise hexagonal steel nut has a shallow cylindrical depression in its radial seating face. Shallower recesses extend radially outward from the depression which partly receives a nylon ring in the relaxed condition of the latter. The portion of the ring which projects from the depression is frustoconical and its volume is not greater than the joint capacity of the shallower recesses. When used on a bolt for fastening a work piece receiving the bolt in an oversized opening, the ring material quickly seals any gaps between the bolt, the workpiece and the nut. Any excess ring material flows into the recesses and none is extruded into the narrowing gap between the seating face of the nut and the workpiece. The important conical shape of the ring is maintained during manufacture of the fastener by injection molding the ring, inserting it in the nut and exposing the latter to induction heating whereby only the surface of the ring is fused and bonded to the metal.
Inventors
- 👤 Harry Scheffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:06
CPC Classifications
F; F16; F16B; F16B33/00; F16B33/004; F16B39/00; F16B39/22; F16B39/24; F16B39/26; F16B39/28; F16B39/34; F16B39/36; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/947
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
258 words
A fastening device comprising, in combination: a. a substantially rigid body member having an axis and formed with a thread about said axis, 1. said member having a radial seating face formed with a depression substantially cylindrical about said axis, 2. said depression being bounded by a radially extending wall of said member in an axial direction and by an axially extending wall of said member in a radially outward direction, 3. said body member being formed with a plurality of recesses extending axially inwardly from said seating face and communicating with said depression through openings in said axially extending wall, 4. said recesses being angularly offset from each other and jointly extending about said axis in an arc of not substantially less than 90*, 5. each recess being axially shallower than said depression; and b. a ring member of a material substantially more resilient than said body member, 1. said ring member having a first axial portion received in said depression and a second axial portion, 2. said second portion having a frustoconical outer face about said axis and projecting from said depression in the relaxed condition of said ring member, 3. said outer face tapering in an axial direction outwardly of said depression, 4. a face of said first portion being fixedly bonded to at least one of said walls in area contact, 5. the combined capacity of said recesses to the level of said seating face being sufficient to receive the volume of said second portion projecting beyond said seating face in said relaxed condition.
Claim 2
Dependent Claim
258 words
A fastening device comprising, in combination: a. a substantially rigid body member having an axis and formed with a thread about said axis, 1. said member having a radial seating face formed with a depression substantially cylindrical about said axis, 2. said depression being bounded by a radially extending wall of said member in an axial direction and by an axially extending wall of said member in a radially outward direction, 3. said body member being formed with a plurality of recesses extending axially inwardly from said seating face and communicating with said depression through openings in said axially extending wall, 4. said recesses being angularly offset from each other and jointly extending about said axis in an arc of not substantially less than 90*, 5. each recess being axially shallower than said depression; and b. a ring member of a material substantially more resilient than said body member, 1. said ring member having a first axial portion received in said depression and a second axial portion, 2. said second portion having a frustoconical outer face about said axis and projecting from said depression in the relaxed condition of said ring member, 3. said outer face tapering in an axial direction outwardly of said depression, 4. a face of said first portion being fixedly bonded to at least one of said walls in area contact, 5. the combined capacity of said recesses to the level of said seating face being sufficient to receive the volume of said second portion projecting beyond said seating face in said relaxed condition.
Claim 3
Dependent Claim
30 words
said depression being bounded by a radially extending wall of said member in an axial direction and by an axially extending wall of said member in a radially outward direction,
Claim 4
Dependent Claim
30 words
said depression being bounded by a radially extending wall of said member in an axial direction and by an axially extending wall of said member in a radially outward direction,
Claim 5
Dependent Claim
21 words
A device as set forth in claim 1, wherein said first portion is of substantially circular cross section about said axis.
Claim 6
Dependent Claim
24 words
said second portion having a frustoconical outer face about said axis and projecting from said depression in the relaxed condition of said ring member,
Claim 7
Dependent Claim
24 words
said second portion having a frustoconical outer face about said axis and projecting from said depression in the relaxed condition of said ring member,
Claim 8
Dependent Claim
44 words
A device as set forth in claim 1, wherein said ring member is formed with an internal thread about said axis, the thread of said ring member being substantially identical in shape and dimensions of each turn with the thread of said body member.
Claim 9
Dependent Claim
12 words
said outer face tapering in an axial direction outwardly of said depression,
Claim 10
Dependent Claim
12 words
said outer face tapering in an axial direction outwardly of said depression,
Claim 11
Dependent Claim
29 words
said body member being formed with a plurality of recesses extending axially inwardly from said seating face and communicating with said depression through openings in said axially extending wall,
Claim 12
Dependent Claim
29 words
said body member being formed with a plurality of recesses extending axially inwardly from said seating face and communicating with said depression through openings in said axially extending wall,
Claim 13
Dependent Claim
23 words
said recesses being angularly offset from each other and jointly extending about said axis in an arc of not substantially less than 90*,
Claim 14
Dependent Claim
23 words
said recesses being angularly offset from each other and jointly extending about said axis in an arc of not substantially less than 90*,
Claim 15
Dependent Claim
47 words
A device as set forth in claim 3, wherein said rigid member is formed with an axial bore communicating with said depression, and is formed with said thread thereof in said bore, said rigid member having a radially enlarged, axially terminal collar portion carrying said seating face.
Claim 16
Dependent Claim
19 words
a face of said first portion being fixedly bonded to at least one of said walls in area contact,
Claim 17
Dependent Claim
19 words
a face of said first portion being fixedly bonded to at least one of said walls in area contact,
Claim 18
Dependent Claim
32 words
the combined capacity of said recesses to the level of said seating face being sufficient to receive the volume of said second portion projecting beyond said seating face in said relaxed condition.
Claim 19
Dependent Claim
32 words
the combined capacity of said recesses to the level of said seating face being sufficient to receive the volume of said second portion projecting beyond said seating face in said relaxed condition.
Claim 20
Dependent Claim
23 words
each recess being axially shallower than said depression; and b. a ring member of a material substantially more resilient than said body member,
Claim 21
Dependent Claim
23 words
each recess being axially shallower than said depression; and b. a ring member of a material substantially more resilient than said body member,
Claim 22
Dependent Claim
19 words
A device as set forth in claim 1, wherein at least one of said walls has a rough surface.
Claim 23
Dependent Claim
27 words
A device as set forth in claim 1, wherein the apex angle of said outer face is not substantially smaller than 90* nor substantially greater than 120*.
Claim 24
Dependent Claim
45 words
A device as set forth in claim 1, wherein the radial width of said seating face measured outwardly from said axially extending wall is at least equal to the radial width of said radially extending wall measured between said axially extending face and said thread.
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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) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |