Patent US3771817A successfully refreshed from Google Patents.
US3771817A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Joint of two mutually braces metal parts covered with plastic material
Assignee: Individual
•
Filing: 1973-02-09
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Granted: 1973-11-13
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Expires: 1993-02-09
Abstract
Abstract Joint of two mutually braced parts covered with plastic material includes a pair of metal parts having respective opposing surfaces defining a hollow space therebetween, and at least one annular flange of the plastic material extending from the covering of at least one of the metal parts and received in the hollow space, the flange having a free peripheral edge. The opposing surfaces include respective clamping surface portions in clamping engagement with the flange, the clamping surface portions being farthest apart in the vicinity of the flange and approaching toward one another radially at the free peripheral edge of the flange.
Inventors
- 👤 E Schnabel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:06
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/10; F16L23/00; F16L23/12; F16L23/125; F16L23/16; F16L23/162; Y; Y10; Y10S; Y10S285/00; Y10S285/901
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
213 words
A joint comprising two metal parts having each a covering of plastic material, said metal parts having a pair of opposing annular clamping faces defining between themselves an annular hollow space into which said covering of plastic material extends, at least one of said coverings in said space is in the form of an annular flange integral with the remainder of the corresponding covering, said opposing annular clamping faces and said annular hollow space therebetween tapering continuously in radial direction beyond the peripheral edge of said annular flange, said metal parts having also a pair of opposite blank abutment faces located radially outwardly of said opposing annular clamping faces; and means extending transverse to said clamping faces and said abutmEnt faces and cooperating with said metal parts for pressing said abutment faces against each other so that the latter engage each other at least with a line contact so as to take up the pressure exerted by said means and for compressing the plastic material between said annular clamping faces in said hollow space with a pressure to provide a perfect seal and so that the plastic material may flow into the hollow space which extends beyond the peripheral edge of said annular flange of plastic material in uncompressed condition of the latter.
Claim 2
Dependent Claim
213 words
A joint comprising two metal parts having each a covering of plastic material, said metal parts having a pair of opposing annular clamping faces defining between themselves an annular hollow space into which said covering of plastic material extends, at least one of said coverings in said space is in the form of an annular flange integral with the remainder of the corresponding covering, said opposing annular clamping faces and said annular hollow space therebetween tapering continuously in radial direction beyond the peripheral edge of said annular flange, said metal parts having also a pair of opposite blank abutment faces located radially outwardly of said opposing annular clamping faces; and means extending transverse to said clamping faces and said abutmEnt faces and cooperating with said metal parts for pressing said abutment faces against each other so that the latter engage each other at least with a line contact so as to take up the pressure exerted by said means and for compressing the plastic material between said annular clamping faces in said hollow space with a pressure to provide a perfect seal and so that the plastic material may flow into the hollow space which extends beyond the peripheral edge of said annular flange of plastic material in uncompressed condition of the latter.
Claim 3
Dependent Claim
38 words
A joint as defined in claim 1, wherein said abutment faces are annular faces located radially outwardly of said annular clamping faces, each of said clamping faces forming together with the corresponding abutment face a common conical face.
Claim 4
Dependent Claim
58 words
A joint as defined in claim 1, wherein said abutment faces are annular faces located radially outwardly of said annular clamping faces, each of said clamping faces forming with the corresponding abutment face a common conical face, and said abutment faces engaging each other substantially with a line contact at the large diameter ends of the conical faces.
Claim 5
Dependent Claim
27 words
A joint as defined in claim 1, wherein said hollow space is defined by a pair of conical clamping faces approaching each other in radially inward direction.
Claim 6
Dependent Claim
44 words
A joint as defined in claim 4, wherein one of said abutment faces is a planar face and the other a substantially conical face radially spaced from the corresponding clamping face so that said abutment faces engages each other substantially with a line contact.
Claim 7
Dependent Claim
48 words
A joint as defined in claim 1, wherein one of said clamping faces is provided on a resiliently yieldable annular portion of one of said metal parts so as to be pretensioned towards the other clamping face when said abutment faces are pressed into engagement with each other.
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US2907103A
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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) | 1976-11-12 | 1977-05-14 | 1977-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-12 | 1981-05-14 | 1981-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-12 | 1985-05-14 | 1985-11-13 | $7700.00 | Window Closed / Lapsed |