US3672707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansion joint
Assignee: Individual
•
Filing: 1970-01-02
•
Granted: 1972-06-27
•
Expires: 1990-01-02
Abstract
Abstract An expansion joint is provided whereby any amount of expansion required can be absorbed with one fold only. Designed to be safe for expansion joint failures by eliminating stresses concentration at the corners and to be simple to manufacture and construction assembly.
Inventors
- 👤 Carmela Mary Russo
- 👤 Baladassare Russo Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:10
CPC Classifications
F; F16; F16L; F16L51/00; F16L51/02; F16L51/021
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
174 words
In combination, means defining a pair of spaced coaxial conduits, and an expansion joint interposed in the space between the conduits, in connection therewith, said joint comprising an annular casing which protrudes radially from the outer periphery of the conduits and the main body of which has an open-cornered polygonal cross-section transverse the axis thereof, and an inverted generally U-shaped configuration in planes parallel to said axis, the opposing sides of which configuration are transverse the axis, there being inverted generally U-shaped folds closing the openings at the corners of the body, the bight portions of which folds are radially convexly protruding from the outer periphery of the body in the polygonal cross-sectional plane of the same, and the leg portions of which folds are axially convexly protruding from the sides of the body and have matching, oppositely disposed arcuate cross sections in planes parallel to the axis of the conduits, which taper relatively conically inwardly toward the conduits, from the outer periphery to a point adjacent the inner periphery of the body, respectively.
Claim 2
Dependent Claim
174 words
In combination, means defining a pair of spaced coaxial conduits, and an expansion joint interposed in the space between the conduits, in connection therewith, said joint comprising an annular casing which protrudes radially from the outer periphery of the conduits and the main body of which has an open-cornered polygonal cross-section transverse the axis thereof, and an inverted generally U-shaped configuration in planes parallel to said axis, the opposing sides of which configuration are transverse the axis, there being inverted generally U-shaped folds closing the openings at the corners of the body, the bight portions of which folds are radially convexly protruding from the outer periphery of the body in the polygonal cross-sectional plane of the same, and the leg portions of which folds are axially convexly protruding from the sides of the body and have matching, oppositely disposed arcuate cross sections in planes parallel to the axis of the conduits, which taper relatively conically inwardly toward the conduits, from the outer periphery to a point adjacent the inner periphery of the body, respectively.
Claim 3
Dependent Claim
21 words
The combination according to claim 1, wherein the folds have semi-circular cross sections in the polygonal cross-sectional plane of the body.
Claim 4
Dependent Claim
23 words
The combination according to claim 2, wherein the folds have complemental semi-circular cross sections in planes parallel to the axis of the conduits.
Claim 5
Dependent Claim
19 words
The combination according to claim 1, wherein the folds taper to apices at the outer peripheries of the conduits.
Claim 6
Dependent Claim
24 words
The combination according to claim 1, wherein the sides of the body are disposed in spaced parallel planes transverse the axis of the conduits.
Claim 7
Dependent Claim
26 words
The combination according to claim 1, wherein the conduits are disposed on a rectilinear axis and also have a polygonal cross section transverse the axis thereof.
Claim 8
Dependent Claim
153 words
An expansion joint for interconnecting a pair of spaced coaxial conduits, comprising means defining an annular casing, the main body of which has an open cornered polygonal cross section transverse the central axis thereof, and an inverted generally U-shaped configuration in planes parallel to said axis, the opposing sides of which configuration are transverse the axis, there being inverted generally U-shaped folds closing the openings at the corners of the body, the bight portions of which folds are radially convexly protruding from the outer periphery of the body in the polygonAl cross-sectional plane of the same, and the leg portions of which folds are axially convexly protruding from the sides of the body and have matching, opposing disposed arcuate cross sections in planes parallel to the axis of the body, which taper relatively conically inwardly toward the axis from the outer periphery to a point adjacent the inner periphery of the body, respectively.
Claim 9
Dependent Claim
153 words
An expansion joint for interconnecting a pair of spaced coaxial conduits, comprising means defining an annular casing, the main body of which has an open cornered polygonal cross section transverse the central axis thereof, and an inverted generally U-shaped configuration in planes parallel to said axis, the opposing sides of which configuration are transverse the axis, there being inverted generally U-shaped folds closing the openings at the corners of the body, the bight portions of which folds are radially convexly protruding from the outer periphery of the body in the polygonAl cross-sectional plane of the same, and the leg portions of which folds are axially convexly protruding from the sides of the body and have matching, opposing disposed arcuate cross sections in planes parallel to the axis of the body, which taper relatively conically inwardly toward the axis from the outer periphery to a point adjacent the inner periphery of the body, respectively.
Claim 10
Dependent Claim
28 words
The expansion joint according to claim 7, wherein the bight portions and the leg portions of the folds have corresponding semi-circular cross sections in the respective planes thereof.
References Cited (Backward Citations)
US1416334A
Cited
US2797112A
Cited
US3099467A
Cited
US3254910A
Cited
US3365217A
Cited
US3551009A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |