US3889733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw-threaded fastening members
Assignee: Individual
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Filing: 1973-11-28
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Granted: 1975-06-17
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Expires: 1993-11-28
Abstract
Abstract A press-fitted nut, or like screw-threaded fastening member such as a bolt-head, of the kind comprising a body with base projections and a crown with conical sectors, to engage in the wall of a mounting bore, has the base projections and conical sectors staggered angularly and spaced apart axially so as to form, in effect, a circumferential groove around the nut.
Inventors
- 👤 Kajetan Leitner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:06
CPC Classifications
F; F16; F16B; F16B37/00; F16B37/04; F16B37/06; F16B37/062; F16B37/068; Y; Y10; Y10S; Y10S411/00; Y10S411/955; Y10S411/965; Y10S411/968
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
147 words
A screw-threaded fastening member, to be mounted in a bore in a structural part, comprising a nut having a substantially cylindrical body from one end of which is formed at least two radially extending base projections the upper surfaces of which are in a common transverse plane, a crown portion of said substantially cylindrical body projecting axially above said plane, at least two conical sectors being formed from said crown portion and alternating angularly with said base projections so as not to overlap therewith around said nut, and said conical sectors having radially projecting underledges spaced axially from said plane and forming with said upper surfaces of said base projections in effect a circumferential groove about the crown portion, the groove which has opposed side portions formed by the underledges of the conical sectors and the upper surfaces of the base projections circumferentially alternating about the groove.
Claim 2
Dependent Claim
147 words
A screw-threaded fastening member, to be mounted in a bore in a structural part, comprising a nut having a substantially cylindrical body from one end of which is formed at least two radially extending base projections the upper surfaces of which are in a common transverse plane, a crown portion of said substantially cylindrical body projecting axially above said plane, at least two conical sectors being formed from said crown portion and alternating angularly with said base projections so as not to overlap therewith around said nut, and said conical sectors having radially projecting underledges spaced axially from said plane and forming with said upper surfaces of said base projections in effect a circumferential groove about the crown portion, the groove which has opposed side portions formed by the underledges of the conical sectors and the upper surfaces of the base projections circumferentially alternating about the groove.
Claim 3
Dependent Claim
43 words
A screw-threaded fastening member according to claim 1, in which portions of the crown portion between the conical sectors protrude slightly axially above the conical sectors to serve as leading means to enter the crown portion in the mouth of a mounting bore.
Claim 4
Dependent Claim
20 words
A screw-threaded fastening member according to claim 1, in which the underledges of the conical sectors are substantially helically inclined.
Claim 5
Dependent Claim
16 words
A screw-threaded fastening member according to claim 1 wherein said body has an internally threaded bore.
Claim 6
Dependent Claim
22 words
A screw-threaded fastening member according to claim 1 wherein the conical sectors have outer surfaces; and the outer surfaces include ridge means.
Claim 7
Dependent Claim
35 words
A screw-threaded fastening member according to claim 5 wherein said body has an internally threaded bore, the ridge means on each of the sectors being inclined relative to the pitch of the internally threaded bore.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-16 | 1978-12-16 | 1979-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-16 | 1982-12-16 | 1983-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-16 | 1986-12-16 | 1987-06-17 | $7700.00 | Window Closed / Lapsed |