Patent US6123369A successfully refreshed from Google Patents.
US6123369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe lap joint and methods
Assignee: Donaldson Co Inc
•
Filing: 1998-12-02
•
Granted: 2000-09-26
•
Expires: 2018-12-02
Abstract
Abstract A lap joint includes an outer, flexible, cylindrical tube; an inner, solid, cylindrical pipe; and a securing device for compressing the flexible tube around the pipe for securing the flexible tube to the pipe and for providing a substantially leak-free connection between the flexible tube and the pipe. The flexible tube has first and second ends and a first diameter. The flexible tube includes a plurality of captured slots punched through the flexible tube at least at the first end. The plurality of captured slots have a first plurality of metal deformations to prevent circumferential slippage of the flexible tube and are disposed annularly around the flexible tube. Each of the plurality of captured slots are inboard of the first end and do not extend to the first end. The securing device is arranged and configured to completely cover the plurality of captured slots. The flexible tube also includes a plurality of relief slots punched through the flexible tube at least at the first end. The plurality of relief slots have a second plurality of metal deformations to prevent circumferential slippage of the flexible tube and are disposed annularly around the flexible tube. Each of the plurality of relief slots extends to the first end and extends a first distance inboard of the captured slots. Each of the plurality of relief slots is offset a second distance from the relief slots. The solid pipe has first and second ends. The first end has a second diameter less than the first diameter of the flexible tube. The first end is arranged and configured to telescopically slide within the first end of the flexible tube.
Inventors
- 👤 Wayne M. Wagner
- 👤 John T. Herman
- 👤 Michael J. Protas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:17
CPC Classifications
F; F16; F16L; F16L9/00; F16L9/16; F16L9/165; F16L33/00; F16L33/26
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
301 words
A lap joint comprising: (a) an outer, flexible, cylindrical tube having first and second ends and a first diameter, the flexible tube including: (i) a plurality of captured slots punched through the flexible tube at least at the first end; (A) the plurality of captured slots having a first plurality of metal deformations to prevent circumferential slippage of the flexible tube; (B) the plurality of captured slots being disposed annularly around the flexible tube; (C) each of the plurality of captured slots being inboard of the first end and not extending to the first end; (ii) a plurality of relief slots punched through the flexible tube at least at the first end; (A) the plurality of relief slots having a second plurality of metal deformations to prevent circumferential slippage of the flexible tube; (B) the plurality of relief slots being disposed annularly around the flexible tube; (C) each of the plurality of relief slots extending to the first end and extending a first distance inboard of the captured slots; (D) each of the plurality of relief slots being offset a second distance from the relief slots; (b) an inner, solid, cylindrical pipe having first and second ends; (i) the first end of the pipe having a second diameter less than the first diameter of the flexible tube; (ii) the first end of the pipe being arranged and configured to telescopically slide within the first end of the flexible tube; (c) a securing device for compressing the flexible tube around the pipe for securing the flexible tube to the pipe and for providing a substantially leak-free connection between the flexible tube and the pipe, the securing device arranged and configured to completely cover the plurality of captured slots; and (d) a compression indicator for indicating the relative compression of the flexible tube.
Claim 2
Dependent Claim
301 words
A lap joint comprising: (a) an outer, flexible, cylindrical tube having first and second ends and a first diameter, the flexible tube including: (i) a plurality of captured slots punched through the flexible tube at least at the first end; (A) the plurality of captured slots having a first plurality of metal deformations to prevent circumferential slippage of the flexible tube; (B) the plurality of captured slots being disposed annularly around the flexible tube; (C) each of the plurality of captured slots being inboard of the first end and not extending to the first end; (ii) a plurality of relief slots punched through the flexible tube at least at the first end; (A) the plurality of relief slots having a second plurality of metal deformations to prevent circumferential slippage of the flexible tube; (B) the plurality of relief slots being disposed annularly around the flexible tube; (C) each of the plurality of relief slots extending to the first end and extending a first distance inboard of the captured slots; (D) each of the plurality of relief slots being offset a second distance from the relief slots; (b) an inner, solid, cylindrical pipe having first and second ends; (i) the first end of the pipe having a second diameter less than the first diameter of the flexible tube; (ii) the first end of the pipe being arranged and configured to telescopically slide within the first end of the flexible tube; (c) a securing device for compressing the flexible tube around the pipe for securing the flexible tube to the pipe and for providing a substantially leak-free connection between the flexible tube and the pipe, the securing device arranged and configured to completely cover the plurality of captured slots; and (d) a compression indicator for indicating the relative compression of the flexible tube.
Claim 3
Dependent Claim
21 words
A lap joint according to claim 1, wherein the plurality of relief slots are parallel to the plurality of captured slots.
Claim 4
Dependent Claim
31 words
A lap joint according to claim 2, wherein the plurality of captured slots are positioned equidistant from each other, and the plurality of relief slots are positioned equidistant from each other.
Claim 5
Dependent Claim
15 words
A lap joint according to claim 1, wherein the securing device is a pipe clamp.
Claim 6
Dependent Claim
17 words
A lap joint according to claim 1, wherein the pipe and flexible tube are comprised of metal.
Claim 7
Dependent Claim
14 words
A lap joint according to claim 1, wherein the compression indicator includes length markers.
Claim 8
Dependent Claim
16 words
A lap joint according to claim 6, wherein the compression indicator comprises a piece of tape.
Claim 9
Dependent Claim
339 words
A lap joint comprising: (a) an outer, flexible, cylindrical tube having first and second ends and a first diameter, the flexible tube including: (i) a plurality of captured slots punched through the flexible tube at least at the first end; (A) the plurality of captured slots having a first plurality of metal deformations to prevent circumferential slippage of the flexible tube; (B) the plurality of captured slots being disposed annularly around the flexible tube; (C) each of the plurality of captured slots being inboard of the first end and not extending to the first end; (D) each of the plurality of captured slots being positioned equidistant from each other; (ii) a plurality of relief slots punched through the flexible tube at least at the first end; (A) the plurality of relief slots having a second plurality of metal deformations to prevent circumferential slippage of the flexible tube; (B) the plurality of relief slots being disposed annularly around the flexible tube; (C) each of the plurality of relief slots extending to the first end and extending a first distance inboard of the captured slots; (1) the first distance being at least 0.1 inches (2.5 mm); (D) each of the plurality of relief slots being offset a second distance from the relief slots; (E) the plurality of relief slots being parallel to the plurality of captured slots; (F) the plurality of relief slots being positioned equidistant from each other; (b) an inner, solid, cylindrical pipe having first and second ends; (i) the first end of the pipe having a second diameter less than the first diameter of the flexible tube; (ii) the first end of the pipe being arranged and configured to telescopically slide within the first end of the flexible tube; and (c) a securing device for compressing the flexible tube around the pipe for securing the flexible tube to the pipe and for providing a substantially leak-free connection between the flexible tube and the pipe, the securing device arranged and configured to completely cover the plurality of captured slots.
Claim 10
Dependent Claim
339 words
A lap joint comprising: (a) an outer, flexible, cylindrical tube having first and second ends and a first diameter, the flexible tube including: (i) a plurality of captured slots punched through the flexible tube at least at the first end; (A) the plurality of captured slots having a first plurality of metal deformations to prevent circumferential slippage of the flexible tube; (B) the plurality of captured slots being disposed annularly around the flexible tube; (C) each of the plurality of captured slots being inboard of the first end and not extending to the first end; (D) each of the plurality of captured slots being positioned equidistant from each other; (ii) a plurality of relief slots punched through the flexible tube at least at the first end; (A) the plurality of relief slots having a second plurality of metal deformations to prevent circumferential slippage of the flexible tube; (B) the plurality of relief slots being disposed annularly around the flexible tube; (C) each of the plurality of relief slots extending to the first end and extending a first distance inboard of the captured slots; (1) the first distance being at least 0.1 inches (2.5 mm); (D) each of the plurality of relief slots being offset a second distance from the relief slots; (E) the plurality of relief slots being parallel to the plurality of captured slots; (F) the plurality of relief slots being positioned equidistant from each other; (b) an inner, solid, cylindrical pipe having first and second ends; (i) the first end of the pipe having a second diameter less than the first diameter of the flexible tube; (ii) the first end of the pipe being arranged and configured to telescopically slide within the first end of the flexible tube; and (c) a securing device for compressing the flexible tube around the pipe for securing the flexible tube to the pipe and for providing a substantially leak-free connection between the flexible tube and the pipe, the securing device arranged and configured to completely cover the plurality of captured slots.
Claim 11
Dependent Claim
18 words
A lap joint according to claim 8, wherein the second distance is at least 0.1 inches (2.5 mm).
Claim 12
Dependent Claim
37 words
A lap joint according to claim 9, wherein the captured slots have a length between 0.5 inches (1.3 cm) and 1.5 inches (3.8 cm) and a width between 0.1 inches (2.5 mm) and 0.3 inches (7.6 mm).
Claim 13
Dependent Claim
37 words
A lap joint according to claim 10, wherein the relief slots have a length between 0.2 inches (5.1 mm) and 1 inch (2.5 cm) and a width between 0.05 inches (1.3 mm) and 0.2 inches (5.1 mm).
Claim 14
Dependent Claim
22 words
A lap joint according to claim 11, wherein the first diameter is between 3.5 inches (8.9 cm) and 6 inches (15.2 cm).
Claim 15
Dependent Claim
22 words
A lap joint according to claim 12, wherein the second diameter is between 3.5 inches (8.9 cm) and 6 inches (15.2 cm).
Claim 16
Dependent Claim
311 words
A lap joint comprising: (a) an outer, flexible, cylindrical tube having first and second ends and a first diameter, the flexible tube including: (i) a plurality of captured slots punched through the flexible tube at least at the first end; (A) the plurality of captured slots having a first plurality of metal deformations to prevent circumferential slippage of the flexible tube; (B) the plurality of captured slots being disposed annularly around the flexible tube; (C) each of the plurality of captured slots being inboard of the first end and not extending to the first end; (ii) a plurality of relief slots punched through the flexible tube at least at the first end; (A) the plurality of relief slots having a second plurality of metal deformations to prevent circumferential slippage of the flexible tube; (B) the plurality of relief slots being disposed annularly around the flexible tube; (C) each of the plurality of relief slots extending to the first end and extending a first distance inboard of the captured slots; (D) each of the plurality of relief slots being offset a second distance from the relief slots; (b) an inner, solid, cylindrical pipe having first and second ends; (i) the first end of the pipe having a second diameter less than the first diameter of the flexible tube; (ii) the first end of the pipe being arranged and configured to telescopically slide within the first end of the flexible tube; and (c) a securing device for compressing the flexible tube around the pipe for securing the flexible tube to the pipe and for providing a substantially leak-free connection between the flexible tube and the pipe, the securing device arranged and configured to completely cover the plurality of captured slots; (i) the securing device being a pipe clamp having a width at least 1.1 times a width of the plurality of captured slots.
Claim 17
Dependent Claim
311 words
A lap joint comprising: (a) an outer, flexible, cylindrical tube having first and second ends and a first diameter, the flexible tube including: (i) a plurality of captured slots punched through the flexible tube at least at the first end; (A) the plurality of captured slots having a first plurality of metal deformations to prevent circumferential slippage of the flexible tube; (B) the plurality of captured slots being disposed annularly around the flexible tube; (C) each of the plurality of captured slots being inboard of the first end and not extending to the first end; (ii) a plurality of relief slots punched through the flexible tube at least at the first end; (A) the plurality of relief slots having a second plurality of metal deformations to prevent circumferential slippage of the flexible tube; (B) the plurality of relief slots being disposed annularly around the flexible tube; (C) each of the plurality of relief slots extending to the first end and extending a first distance inboard of the captured slots; (D) each of the plurality of relief slots being offset a second distance from the relief slots; (b) an inner, solid, cylindrical pipe having first and second ends; (i) the first end of the pipe having a second diameter less than the first diameter of the flexible tube; (ii) the first end of the pipe being arranged and configured to telescopically slide within the first end of the flexible tube; and (c) a securing device for compressing the flexible tube around the pipe for securing the flexible tube to the pipe and for providing a substantially leak-free connection between the flexible tube and the pipe, the securing device arranged and configured to completely cover the plurality of captured slots; (i) the securing device being a pipe clamp having a width at least 1.1 times a width of the plurality of captured slots.
Claim 18
Dependent Claim
21 words
A lap joint according to claim 14, wherein the plurality of relief slots are parallel to the plurality of captured slots.
Claim 19
Dependent Claim
31 words
A lap joint according to claim 14, wherein the plurality of captured slots are positioned equidistant from each other, and the plurality of relief slots are positioned equidistant from each other.
Claim 20
Dependent Claim
18 words
A lap joint according to claim 14, wherein the first distance is at least 0.1 inches (2.5 mm).
Claim 21
Dependent Claim
18 words
A lap joint according to claim 14, wherein the second distance is at least 0.1 inches (2.5 mm).
Claim 22
Dependent Claim
306 words
A lap joint comprising: (a) an outer, flexible, cylindrical tube having first and second ends and a first diameter, the flexible tube including: (i) a plurality of captured slots punched through the flexible tube at least at the first end; (A) the plurality of captured slots having a first plurality of metal deformations to prevent circumferential slippage of the flexible tube; (B) the plurality of captured slots being disposed annularly around the flexible tube; (C) each of the plurality of captured slots being inboard of the first end and not extending to the first end; (ii) a plurality of relief slots punched through the flexible tube at least at the first end; (A) the plurality of relief slots having a second plurality of metal deformations to prevent circumferential slippage of the flexible tube; (B) the plurality of relief slots being disposed annularly around the flexible tube; (C) each of the plurality of relief slots extending to the first end and extending a first distance inboard of the captured slots; (D) each of the plurality of relief slots being offset a second distance from the relief slots; (E) each of the plurality of relief slots being in touching engagement with the plurality of captured slots; (b) an inner, solid, cylindrical pipe having first and second ends; (i) the first end of the pipe having a second diameter less than the first diameter of the flexible tube; (ii) the first end of the pipe being arranged and configured to telescopically slide within the first end of the flexible tube; and (c) a securing device for compressing the flexible tube around the pipe for securing the flexible tube to the pipe and for providing a substantially leak-free connection between the flexible tube and the pipe, the securing device arranged and configured to completely cover the plurality of captured slots.
Claim 23
Dependent Claim
306 words
A lap joint comprising: (a) an outer, flexible, cylindrical tube having first and second ends and a first diameter, the flexible tube including: (i) a plurality of captured slots punched through the flexible tube at least at the first end; (A) the plurality of captured slots having a first plurality of metal deformations to prevent circumferential slippage of the flexible tube; (B) the plurality of captured slots being disposed annularly around the flexible tube; (C) each of the plurality of captured slots being inboard of the first end and not extending to the first end; (ii) a plurality of relief slots punched through the flexible tube at least at the first end; (A) the plurality of relief slots having a second plurality of metal deformations to prevent circumferential slippage of the flexible tube; (B) the plurality of relief slots being disposed annularly around the flexible tube; (C) each of the plurality of relief slots extending to the first end and extending a first distance inboard of the captured slots; (D) each of the plurality of relief slots being offset a second distance from the relief slots; (E) each of the plurality of relief slots being in touching engagement with the plurality of captured slots; (b) an inner, solid, cylindrical pipe having first and second ends; (i) the first end of the pipe having a second diameter less than the first diameter of the flexible tube; (ii) the first end of the pipe being arranged and configured to telescopically slide within the first end of the flexible tube; and (c) a securing device for compressing the flexible tube around the pipe for securing the flexible tube to the pipe and for providing a substantially leak-free connection between the flexible tube and the pipe, the securing device arranged and configured to completely cover the plurality of captured slots.
Claim 24
Dependent Claim
21 words
A lap joint according to claim 19, wherein the plurality of relief slots are parallel to the plurality of captured slots.
Claim 25
Dependent Claim
31 words
A lap joint according to claim 19, wherein the plurality of captured slots are positioned equidistant from each other, and the plurality of relief slots are positioned equidistant from each other.
Claim 26
Dependent Claim
18 words
A lap joint according to claim 19, wherein the first distance is at least 0.1 inches (2.5 mm).
Claim 27
Dependent Claim
18 words
A lap joint according to claim 19, wherein the second distance is at least 0.1 inches (2.5 mm).
Claim 28
Dependent Claim
15 words
A lap joint according to claim 19, wherein the securing device is a pipe clamp.
Claim 29
Dependent Claim
26 words
A lap joint according to claim 24, wherein the pipe clamp has a width at least 1.1 times a width of the plurality of captured slots.
Claim 30
Dependent Claim
16 words
A lap joint according to claim 19 wherein the pipe and flexible tube each comprise metal.
References Cited (Backward Citations)
US30042A
Cited
US3348629A
Cited
US3508770A
Cited
US3525419A
Cited
US3574358A
Cited
US3572778A
Cited
US3653696A
Cited
US3645357A
Cited
US3863964A
Cited
US3730293A
Cited
US3827733A
Cited
US3905623A
Cited
USRE30042E
Cited
US3944265A
Cited
US4056273A
Cited
US4142743A
Cited
US4113289A
Cited
US4270689A
Cited
US4261600A
Cited
US4312526A
Cited
US4536019A
Cited
US4609213A
Cited
US4466642A
Cited
US4558891A
Cited
US4623164A
Cited
US4660862A
Cited
US4629226A
Cited
US4813720A
Cited
US4790574A
Cited
US5116083A
Cited
US5310158A
Cited
US5632513A
Cited
US5588680A
Cited
US5924282A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-09-26 | 2004-03-27 | 2004-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-09-26 | 2008-03-27 | 2008-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-09-26 | 2012-03-27 | 2012-09-26 | $7700.00 | Window Closed / Lapsed |