An integral ring-shaped seal adapted to be carried at the end of a connector housing and provide two spaced-apart sealing portions, said two spaced-apart sealing portions being connected by a web, and said two spaced-apart sealing portions together with said web providing therebetween an opening adapted to receive a flange located in proximity to the end of the connector housing, at least one of said two spaced-apart sealing portions having a cut-out axially disposed away from said opening to provide increased resiliency and wear resistance.
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1. An integral ring-shaped seal adapted to be carried at the end of a connector housing and provide two spaced-apart sealing portions, said two spaced-apart sealing portions being connected by a web, and said two spaced-apart sealing portions together with said web providing therebetween an opening adapted to receive a flange located in proximity to the end of the connector housing, at least one of said two spaced-apart sealing portions having a cut-out axially disposed away from said opening to provide increased resiliency and wear resistance.
2. The construction of
3. The construction of
4. The construction of
5. The novel combination comprising telescoping connector housing sections one of which has an upstanding annular flange located in proximity to its open end, and an integral ring-shaped seal carried at the end of one of said connector housing, said seal having two spaced-apart sealing portions, said two spaced-apart sealing portions being connected by a web, and said two spaced-apart sealing portions together with said web providing therebetween an opening, said flange being received in said opening, at least one of said two spaced-apart sealing portions having a cut-out axially disposed away from said opening to provide increased resilency and wear resistance.
6. The construction of
7. The construction of
8. The construction of
9. The construction of
10. The construction of
11. The construction of
12. The construction of
exterior of said telescoping section. 13. In the ducts of commercial jet aircraft, the improvement comprising: a novel combination forming part of said ducts and comprising telescoping flexible connector housing sections one of which has an upstanding annular flange located in proximity to the open end of the connector housing, and an integral, flexible, fiber-reinforced elastomeric ring-shaped seal carried at the end of one of said connector housing, said seal having two spaced-apart sealing portions, said two spaced-apart sealing portions being connected by a web, and said two spaced-apart sealing portions together with said web providing therebetween an opening, said flange being received in said opening, at least one of said two spaced-apart sealing portions having a cut-out axially disposed away from said opening to provide increased resiliency and wear resistance, said connector housing sections being adapted to undergo flex due to thermal cycling and other stresses. 14. The improvement of claim 13, wherein the seal has an L-shaped cross-section, one leg of which abuts the side of the flange and the other leg abuts the surface of one of its sides and the end of the flange on the other. 15. The improvement of claim 13, wherein said opening is a slot. 16. The improvement of claim 13, wherein there are two symmetric axial cut-outs which open at opposite sides of the seal. 17. The improvement of claim 13, wherein there is one axial cut-out. 18. The improvement of claim 13, wherein one of said telescoping sections has two adjacent "L" shaped flange sections, one of which is received in said opening in the seal and the other positioned to abut the end of said seal, both of said flange sections being adhered to the cylindrical surface of said telescoping section. 19. The improvement of claim 18, wherein the flanges are on the interior of said telescoping section. 20. The improvement of claim 18, wherein the flanges are on the exterior of said telescoping section. |
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resistance resistant of abrasion and wear as the connector ends 10 and 12 intergo undergo flex due to thermal cycling and other stresses. The connector portions per se are normally made of titanium. However, the specific materials of construction do not bear on the present invention.
As can be seen in FIGS. 6A to 6L, the integral annular seal can have a variety of cross-sectional configurations including the embodiment wherein both portions which are interconnected by the web have axially disposed cut-out at opposite sides of the flange-receiving opening. The symmetrical configurations afford greater flexibility than the asymmetrical configurations.
The embodiments of FIGS. 7 to 12 illustrate the case where the flange-receiving opening and the axially displaced cut-out merge to form an L-shaped integral annular ring which has one leg adapted to abut the flange and the other leg adapted to abut the surface of one connector end on one of its sides and the free end of the flange on the other side.
The "L" shaped seal of FIGS. 7 through 12 is the same seal as shown in FIGS. 19 through 22. Thus, this version is characterized by exceptional versatility. It should also be noted that this seal affords far greater sealing area than the "J" seals of the prior art, and is superior in function and durability.
FIGS. 14 through 22 relate to the structure wherein the connector ends 100 and 102 are telescoping. Connector end 100 has outwardly disposed flanges 104 and 106. The integral annular seal 108 has two spaced-apart portions 110 and 112 with interconnecting web 112. The space 114 is adapted to receive flange 106. The axially disposed cut-out 116 functions as described hereinabove.
As is illustrated by FIG. 15 in particular, the invention is applicable to the full range of connector configurations.
The present invention provides numerous advantages some of which are as follows:
1. Longer sealing edge surface which provides longer service life.
2. Maintains its sealing capabilities under angulation and negative pressure.
3. Construction allows greater side loads.
4. Seal will not roll during installation.
5. Even if seal is installed beyond its design limits the web prevents the inner seal from disintegrating into the ducting system.
6. Design does not allow seal to be put into housing incorrectly.
7. Single seal design eliminates human error of omitting inner seal during installation.
8. "C" area of seal will accommodate "O" ring for additional squeeze if required, such as in cold air ducting.
9. Only required to stock one seal per joint, which is more cost effective resulting in less inventory.
10. Dimensionally the joint is used in a compression and tension system by changing the primary sealing surface of the seal from the housing to the sleeve.
It is to be understood that the present invention allows the use of the same general configuration of telescoping parts to be used in a compression or tension system, or a system that is mixed compression and tension.
It is also to be understood that the connector can be used as an integral part of a duct or separately as a reducer.
Having fully described the invention, it is intended that it be limited only by the lawful scope of the appended claims.
Newman, Ira R., Minshull, Kenneth N., McGilp, Kenneth J.
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