Pipe coupling having wedge shaped keys

Inactive Publication Date: 2005-09-29
VICTAULIC
View PDF25 Cites 95 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many couplings according to the prior art do not reliably provide the desired degree of rigidity mainly because they use keys having rectangular cross-sections that are narrower than the width of the grooves that they engage.
This condition may result in inconsistent contact between the coupling and the pipes which allows too much free play and relative movement, for example, axially, rotationally or angularly, between the pipes.
It is also difficult to ensure that such keys properly engage the grooves.
Couplings which provide a more rigid connection may be ineffective to force the pi

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Pipe coupling having wedge shaped keys
  • Pipe coupling having wedge shaped keys
  • Pipe coupling having wedge shaped keys

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030]FIG. 1 shows a pipe coupling 10 for connecting two pipes 12 and 14 co-axially end to end. As shown in FIG. 2, coupling 10 is comprised of at least two segments 16 and 18. Each segment 16 and 18 has lugs 20 and 22 respectively, the lugs being positioned at or proximate to each end of the segments. The lugs 20 at each end of segment 16 align with the lugs 22 at each end of segment 18. Lugs 20 and 22 are adapted to receive fasteners, preferably in the form of bolts 24 and nuts 26 for joining the segments to one another end to end surrounding the pipes 12 and 14. In one embodiment, shown in FIG. 1, the lugs 20 engage the lugs 22 in what is known as “pad-to-pad engagement” with the lugs contacting one another when the segments 16 and 18 are properly engaged with the pipes 12 and 14 as explained below. The lugs may also be attached to each other in spaced apart relation when the segments 16 and 18 are properly engaged with the pipes 12 and 14, as illustrated in FIG. 1A.

[0031] Altho...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Lengthaaaaaaaaaa
Lengthaaaaaaaaaa
Angleaaaaaaaaaa
Login to view more

Abstract

A coupling and pipes joined by the coupling are disclosed. The pipes have circumferential grooves adjacent their ends which are engaged by keys that project inwardly from the couplings. The keys are wedge shaped and substantially fill the grooves to provide a rigid joint. The grooves may have a shape that is complementary to the grooves. The keys may have convex or concave cross sectional shapes. The couplings have segments attached by fasters engaging lugs at either end of the coupling. The lugs are attached pad to pad or in spaced relationship. Gaps may be maintained between various surfaces on the keys and on the grooves through tolerances on the couplings.

Description

FIELD OF THE INVENTION [0001] The invention concerns couplings for joining pipes end to end and effecting a substantially rigid or flexible fluid tight joint therebetween. BACKGROUND OF THE INVENTION [0002] Couplings for joining pipes together end to end comprise arcuate segments that circumferentially surround co-axially aligned pipes and engage circumferential grooves positioned proximate to the ends of each pipe. The couplings are also used to connect pipes to fluid control components such as valves, reducers, strainers, restrictors, pressure regulators, as well as components to components. Although in the description which follows pipes are described, they are used by way of example only, the invention herein not being limited for use only with pipes per se. It should also be noted that the term “pipe” as used herein refers to straight pipes as well as elbows, tees and other types of fittings. [0003] The segments comprising the couplings have circumferential keys that extend rad...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B21D17/04F16L17/00F16L17/025F16L21/06F16L23/08F16L23/16F16L35/00F16L43/00
CPCB21D17/04F16L17/025F16L17/04F16L21/065Y10T29/49948F16L23/22F16L25/12F16L43/00F16L23/08F16L21/06F16L21/02
Inventor DOLE, DOUGLAS R.
Owner VICTAULIC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap