Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS3425456 A
Publication typeGrant
Publication dateFeb 4, 1969
Filing dateAug 21, 1967
Priority dateMay 17, 1967
Publication numberUS 3425456 A, US 3425456A, US-A-3425456, US3425456 A, US3425456A
InventorsArthur Schibig
Original AssigneeArthur Schibig
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Protective sheath for insulating pipe covering
US 3425456 A
Images(1)
Previous page
Next page
Description  (OCR text may contain errors)

fb. 4, 1969 A. SCHIBIG I 3,425,456

PROTECTIVE SHEATH FOR INSULATING PIPE COVERING Filed Aug. 21, 1967 3,425,456 PROTECTIVE SHEATH FOR INSULATING PIPE COVERING Arthur Schibig, 19, Ottostrasse 8005, Zurich, Switzerland Filed Aug. 21, 1967, Ser. No. 662,074 Claims priority, application Switzerland, May 17, 1967,

6,950/ 67 US. Cl. 138-162 3 Claims Int. Cl. F161 9/00 ABSTRACT OF THE DISCLOSURE The invention relates to insulated pipes, and relates more particularly to protective sheathing for insulated pipe coverings.

For the protection of insulating pipe covering, it is imperative to provide a sheathing, to conserve the insulating qualities of the covering. Sheathing of this type may be composed of a bandage enveloping the covering with a band, or sheathing it with a band longitudinally, and interconnecting the edges with adhesive tape.

It has been proposed to provide such sheathing made of synthetic plastic material, but this has proved to be time consuming and expensive in mounting. Furthermore, the protective sheathing for the various fittings, such as elbows, Ts crosses, branches and couplings, have heretofore been uneven and unesthetic.

It is accordingly among the principal objects of the invention to provide a protective sheathing for insulating pipe covering that avoids the drawbacks of the prior art, is practical, inexpensive to manufacture, easy to mount, and of pleasing appearance.

Further objects and advantages of the invention will be set forth in part in the following specification and in part will be obvious therefrom without being specifially referred to, the same being realized and attained as pointed out in the claims hereof.

Generally, the instant invention provides for a protective sheath for insulating pipe covering in which two similar half-shells with latching means near their edges complete a shell; when so completed, the latching means hold the half-shells together.

The sheath is independent of the material chosen for the pipe covering, and independent of whether the covering is in the form of shells or stuffing or mats, or the like.

For a fuller understanding of the nature and object of the invention, reference should be had to the following detailed description, taken in connection with the accompanying drawings, in which:

FIG. 1 is a fragmentary side elevational extended view of two half-shells ready to be interconnected;

FIG. 2 is a fragmentary elevational view of two adjoining hollow half-shell members, the end portions of which are shown in overlapping relationship;

FIG. 3 is a large scale sectional view taken on the line III-III of FIG. 1;

FIG. 4 is a fragmentary sectional view showing parts of two opposite half-shells interengaged;

FIG. 5 is a fragmentary sectional view similar to FIG. 4, but showing the parts disenageged;

FIG. 6 is an elevational view of a hollow half-shell for an insulating covered elbow pipe fitting;

FIG. 7 is an elevational view of a hollow half-shell for an insulating covered T pipe fitting; .and

United States Patent 0 3,425,456 Patented Feb. 4, 1969 FIG. 8 is an elevational view of a hollow half-shell for an insulating covered reduction coupling pipe fitting.

In carrying the invention into effect in the embodiments which have been selected for illustration in the accompanying dnawings and for description in this specification, and referring now particularly to FIGS. 1, 2 and 3, there are provided two half-shells 1 and 1 for a piece of insulating covered straight pipe. Each half-shell 1, 1' is hollow, and the two half-shells 1 and 1' are identical in shape, and may be placed opposite each other to complete a shell 1. Each shell forms a member and the members complete the protective sheathing. The shells 1 are members for straight pipes; they are interconnected by means of connecting members 2 (FIG. 2). Other members are elbow members 3 (FIG. 6), T members 4 (FIG. 7) and reducing coupling members 5 (FIG. 8). Members for other fittings may similarly be provided, though they have not been shown in the drawings.

Each completed shell 1 for a straight piece of pipe is composed of two identical half-shells 1, 1'; each halfshell has opposite median edges between its arcuate end portions. Along these edges there are provided latching means that include connecting hooks 6, 6. As best shown in FIG. 3, each hook 6 near one median edge is directed inwardly and has a counterpart near the other median edge, namely a hook 6 that, however, is directed outwardly. The hooks 6 and 6' as shown in FIG. 1, alternate along each median edge, so that alternatingly one hook is directed outwardly and the next inwardly along said edge.

Due to this arrangement, it is possible to provide for most members merely half-shells, and to unite each two half-shells into a completed shell, simpl by turning around one half-shell as compared to the other (see FIG. 3) and by placing them opposite each other, and by finally pushing them towards each other (see FIG. 5) until they snap into interlatching engagement (see FIG. 4).

In the preceding description, the half-shells that complete a shell for most members have been termed to be identical. Actually, although these half-shells will come off a production line, they will not strictly be identical, as there may be small differences within permissible tolerances. For this reason, the half-shells are sometimes termed herein as merely being similar, rather than identical.

In accordance with a preferred embodiment, one of each pair of interengaging hooks, for instance, each hook 6 may .be provided with an inclined surface 7 to facilitate the snapping together with its latching partner hook 6' (see FIGS. 1 and 2); when the two half-shells 1 and 1 have been snapped together, they cannot be self-released. The interengagement between the half-shells 1 and 1' provides for good joining along the median edges, and

for reliable latching (FIG. 4).

Where several members are needed for sheathing a long piece of straight pipe, several shells 1 may be used are interconnected by connecting members 2; each connecting member 2, like the member 1, is also formed of two half-shells. The half-shells of the connecting member 2 are also provided with books 6, 6' for interengagement. The two arcuate end portions of the connecting member 2 are provided with recessed tubular shoulders that, as shown in FIG. 2, fit in overlapping relationship into the arcuate thinned sleeve end portions of the members 1, providing for a smooth joint. This overlapping relation ship permits an excellent connection between the members 1 and 2. If desired, adhesive strips may be mounted on the outside of these overlapping end portions, for sealing. Without adhesive strips, the overlapping end portions serve to compensate for any changes in length.

The member 3 (FIG. 6), like the member 1, also is composed of two half-shells, though only one half-shell The arrangement of the member 4 (FIG. 7) in most respects is similar to that of the member 3 (FIG. 6), except that again like in connection with the members 1 or 2, identical or rather similar half-shells may be used. Like in the member 4, the end portions are provided with recessed tubular shoulders to be placed in overlapping relationship into the thinned sleeve end portions of other members, such as the members 1.

The member (FIG. 8) is also composed of two similar half-shells, although only one is shown in the drawing. It serves to protect a reduction coupling fitting, and has near its larger diameter a thinned sleeve end portion, and near its smaller diameter a recessed tubular shoulder, for appropriate overlapping connection with respective other members.

During mounting, the respective half-shells are placed in proper opposite positions, and then pressed together so that the hooks 6 and 6' Will complete a snap engagement, thereby forming hollow shells from the half-shells. The connection between adjoining members is accomplished by means of overlapping end portions as shown, for instance, in FIG. 2. As previously indicated, adhesive strips (not shown) may be mounted on the overlapping end portions.

Having thus described the invention, what I claim as new and desire to be secured by Letters Patent, is as follows:

1. As an article of manufacture, a protective sheath, for use with an insulating pipe covering, said sheath being composed of synthetic plastic material and comprising two half-shells of the same shape and being adapted to be placed opposite each other to complete a hollow shell, each half-shell having two opposite edges between the ends, said half-shells including near said edges latching means adapted for interengagement when said half-shells are assembled to complete said shell, said latching means on each half-shell comprising along each of said edges alternating inwardly and outwardly directed hooks spaced apart from each other, each inwardly directed hook near one edge being disposed opposite an outwardly directed hook near the other edge, each inwardly directed hook of one half-shell adapted to engage a correspondingly outwardly directed hook of the other half-shell when the shell is completed, whereby each interengaging pair of hooks restrains the disengagement of the next adjoining interengaging hook pair when said half-shells have been assembled to complete the shell.

2. An article of manufacture, as claimed in claim 1, wherein each half-shell has two arcu'ate end portions each adapted to be in overlapping relation with a next adjoining half-shell.

3. An article of manufacture, as claimed in claim 1, wherein at least one of each pair of hooks to be engaged has an inclined surface promoting snap engagement between the hooks of the pier when the half-shells are brought together to complete the shell.

References Cited FOREIGN PATENTS 521,143 3/1921 France. 984,179 2/ 1965 Great Britain. 571,894 1/1958 Italy.

DARRELL L. CLAY, Primary Examiner.

Us. 01. X.R.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
FR521143A * Title not available
GB984179A * Title not available
IT571894B * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3926141 *May 31, 1974Dec 16, 1975Taylor IndustriesModular wire guard
US4223491 *Oct 6, 1978Sep 23, 1980Vaughn Wilbur CGuy wire guard
US4374596 *Mar 23, 1979Feb 22, 1983Josef Schlemmer GmbhPipe-form connector for cable ducts
US4519434 *Nov 19, 1982May 28, 1985Security Shutter CorporationWinding mechanism for rollable shutter curtain
US4638611 *Jan 6, 1986Jan 27, 1987Vaughn Charles RGuy-wire guard assembly and fastening systems therefor
US4682010 *Apr 12, 1985Jul 21, 1987Safeway Products, Inc.In-line electric heater for an aerosol delivery system
US4848409 *Mar 11, 1988Jul 18, 1989Dresser-Rand CompanyCoupling guard
US4951716 *Dec 2, 1988Aug 28, 1990Yazaki CorporationLocking mechanism
US4976366 *Jan 10, 1990Dec 11, 1990Russell Jim LUnderground valve box
US5022685 *Aug 21, 1989Jun 11, 1991Hal StiskinSecondary containment system and method
US5262120 *Jun 19, 1992Nov 16, 1993Societe Anonyme Dite: Aerospatiale Societe Nationale IndustrielleMethod of manufacturing a protective sheath
US5869785 *Jun 10, 1997Feb 9, 1999Antec CorporationWire clamp with parallel gripping action
US5875821 *Jan 29, 1997Mar 2, 1999Dumser Mettallbau Gmbh & Co. KgHousing for receiving individual components of a heating or cooling installation
US5884673 *Jun 26, 1998Mar 23, 1999Calsonic CorporationPipe
US5901739 *Nov 26, 1996May 11, 1999Helmsderfer; John A.Cover assembly with integral securing apparatus for covering undersink piping
US5904175 *May 1, 1997May 18, 1999Mcguire Manufacturing Co., Inc.Insulative cover piece for a trap pipe of a p-trap drain pipe
US5913325 *Jul 2, 1998Jun 22, 1999Helmsderfer; John A.Method for insulating a p-trap drain piping assembly
US5915413 *Sep 24, 1997Jun 29, 1999Helmsderfer; John A.Cover assembly with integral measurement indicia for covering undersink piping
US5934316 *Sep 29, 1997Aug 10, 1999Helmsderfer; John A.Cover assembly and method for covering undersink piping
US5960820 *Sep 19, 1997Oct 5, 1999Helmsderfer; John A.Cover assembly having rapid installation features for covering undersink piping
US6000420 *Jul 16, 1998Dec 14, 1999Horizon Resources CorporationInsulating jacket for hot and cold piping systems and method of use
US6012480 *Jul 2, 1998Jan 11, 2000Helmsderfer; John A.Cover assembly for covering undersink piping utilizing sliding cover pieces
US6026846 *Feb 10, 1998Feb 22, 2000Acoust-A-Fiber Research & Development, Inc.Shield encompassing a hot pipe
US6247500 *Apr 8, 1998Jun 19, 2001Zardoz Pty LtdConduit systems
US6921564May 4, 1999Jul 26, 2005Kaefer Integrated Services Pty LtdInsulation module, system and method for installation and manufacture
US6983768Oct 25, 1999Jan 10, 2006Bains Harding Limitedinsulation module suitable for cryogenic applications; a system of modules for insulating a component
US7226022Aug 22, 2003Jun 5, 2007Panduit Corp.Cable duct coupler
US7246778Mar 25, 2004Jul 24, 2007Panduit Corp.Releasable barb assembly
US7458209 *Feb 8, 2006Dec 2, 2008Elringklinger AgShielding component, a heat shield in particular
US7559343Jul 8, 1999Jul 14, 2009Kaefer Integrated Services Pty LtdInsulation module for vessels
US7752730Jun 19, 2007Jul 13, 2010Panduit Corp.Method for assembling a cable duct system with releasable barb assembly
US7856811 *Feb 8, 2006Dec 28, 2010Elringklinger AgShielding component, a heat shield in particular
US7992279May 27, 2010Aug 9, 2011Panduit Corp.Releasable barb assembly
US8083187Sep 9, 2005Dec 27, 2011Panduit Corp.Cable duct coupler
US8162267Oct 21, 2004Apr 24, 2012Panduit Corp.Barb support
US8474765Jul 12, 2011Jul 2, 2013Panduit Corp.Releasable barb assembly
US8652605Mar 5, 2010Feb 18, 2014Georg Fischer Jrg AgMethod for producing a tubular hollow body, and tubular hollow body
DE102006009873A1 *Mar 3, 2006Sep 6, 2007Erwin BilligRohrverbinder
WO1999057481A1 *May 4, 1999Nov 11, 1999Bains Harding LtdInsulation module, system and method for installation and manufacture
Classifications
U.S. Classification138/162, 174/DIG.110, 174/68.3, 137/375, 174/136
International ClassificationF16L59/10, F16L59/11, F16L59/02
Cooperative ClassificationF16L59/024, F16L59/11, F16L59/103, Y10S174/11
European ClassificationF16L59/10D, F16L59/11, F16L59/02B4