US4898756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insert for a sandwich structure
Assignee: Airbus Helicopters Deutschland GmbH
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Filing: 1988-08-04
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Granted: 1990-02-06
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Expires: 2008-08-04
Abstract
Abstract A hollow insert for a sandwich structure having at least one fixed head on a substantially hollow cylindrical shank with a bore through the shank, the head being eccentric relative to the shank, with a corresponding eccentricity of the opening of the bore of the shank in the head, the eccentricity securing the insert against rotation in the structure.
Inventors
- 👤 Walter Oefner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:03
CPC Classifications
F; F16; F16B; F16B5/00; F16B5/01; F16B37/00; F16B37/12; F16B37/122; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12361; Y10T428/13; Y10T428/1352; Y10T428/139; Y10T428/24; Y10T428/24273
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
42 words
An insert for use in sandwich structures comprising a circular shank with a concentric bore, at least one circular head fixed eccentrically to the shank, the bore of the shank being continued through the head, the bore being eccentric to the head.
Claim 2
Dependent Claim
42 words
An insert for use in sandwich structures comprising a circular shank with a concentric bore, at least one circular head fixed eccentrically to the shank, the bore of the shank being continued through the head, the bore being eccentric to the head.
Claim 3
Dependent Claim
12 words
The insert of claim 1 wherein the insert is comprised of plastic.
Claim 4
Dependent Claim
14 words
The insert of claim 1 wherein the insert is comprised of a composite material.
Claim 5
Dependent Claim
12 words
The insert of claim 1 wherein the insert is comprised of metal.
Claim 6
Dependent Claim
46 words
The insert of claim 1 wherein the insert is used as a fastening element and the bore is a threaded bore, so that said insert can be inserted into a sandwich plate structure for securing a screw to said sandwich plate structure in said threaded bore.
Claim 7
Dependent Claim
36 words
The insert of claim 1, further comprising an additional head opposite the first head fixed eccentrically to the shank with the bore of the shank extending through said head and disposed eccentric to the additional head.
Claim 8
Dependent Claim
27 words
The insert of claim 1, further comprising an additional opening disposed in said head for injecting foam into a cavity between said insert and said sandwich structure.
Claim 9
Dependent Claim
42 words
An insert for use in sandwich structures, the insert comprising a shank with an eccentric bore therethrough, at least one head fixed eccentrically to the shank, the bore of the shank extending through the head, the bore being eccentric to the head.
Claim 10
Dependent Claim
42 words
An insert for use in sandwich structures, the insert comprising a shank with an eccentric bore therethrough, at least one head fixed eccentrically to the shank, the bore of the shank extending through the head, the bore being eccentric to the head.
Claim 11
Dependent Claim
12 words
The insert of claim 8, wherein the insert is comprised of plastic.
Claim 12
Dependent Claim
14 words
The insert of claim 8, wherein the insert is comprised of a composite material.
Claim 13
Dependent Claim
12 words
The insert of claim 8, wherein the insert is comprised of metal.
Claim 14
Dependent Claim
46 words
The insert of claim 8, wherein the insert is used as a fastening element and the bore is a threaded bore, so that said insert can be inserted into a sandwich plate structure for securing a screw to said sandwich plate structure in said threaded bore.
Claim 15
Dependent Claim
37 words
The insert of claim 8, further comprising an additional head disposed opposite the first head fixed eccentrically to the shank with the bore of the shank extending through said head and disposed eccentric to the additional head.
Claim 16
Dependent Claim
27 words
The insert of claim 8, further comprising an additional opening disposed in said head for injecting foam into a cavity between said insert and said sandwich structure.
Claim 17
Dependent Claim
32 words
An insert comprising a shank with at least one head affixed eccentrically thereto, the shank having a concentric bore, the bore extending through the head, the bore being eccentric to the head.
Claim 18
Dependent Claim
32 words
An insert comprising a shank with at least one head affixed eccentrically thereto, the shank having a concentric bore, the bore extending through the head, the bore being eccentric to the head.
Claim 19
Dependent Claim
12 words
The insert of claim 15, wherein the insert is comprised of plastic.
Claim 20
Dependent Claim
14 words
The insert of claim 15, wherein the insert is comprised of a composite material.
Claim 21
Dependent Claim
12 words
The insert of claim 15, wherein the insert is comprised of metal.
Claim 22
Dependent Claim
46 words
The insert of claim 15, wherein the insert is used as a fastening element and the bore is a threaded bore, so that said insert can be inserted into a sandwich plate structure for securing a screw to said sandwich plate structure in said threaded bore.
Claim 23
Dependent Claim
37 words
The insert of claim 15, further comprising an additional head disposed opposite the first head fixed eccentrically to the shank with the bore of the shank extending through said head and disposed eccentric to the additional head.
Claim 24
Dependent Claim
27 words
The insert of claim 15, further comprising an additional opening disposed in said head for injecting foam into a cavity between said insert and said sandwich structure.
References Cited (Backward Citations)
US4770582A
Cited
US4647264A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-02-05 | 1993-08-07 | 1994-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-05 | 1997-08-07 | 1998-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-05 | 2001-08-07 | 2002-02-06 | $7700.00 | Window Closed / Lapsed |