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Publication numberUS1903220 A
Publication typeGrant
Publication dateMar 28, 1933
Filing dateNov 25, 1931
Priority dateNov 25, 1931
Publication numberUS 1903220 A, US 1903220A, US-A-1903220, US1903220 A, US1903220A
InventorsLouis J Lemert
Original AssigneeUs Pipe & Foundry Company
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Flange protector
US 1903220 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)



My invention relates to flange protectors adapted for temporary application to the flange of a pipe, valve or other conduit so as to protect the machined surface of the flange from injury during shipment and handling, and the object of my inventionis to provide a flange protector which will be at once efli. cient, cheap and easily applied or detached and which, by preference, will also be so constructed as to permit the use of hooks or similar tools adapted to enter the end of the pipe and used in handling the pipes.

Heretofore it has been customary to protect the machined face of a conduit flange by a wooden cover plate held in placeby bolts extending through the bolt holes ordinarily provided in the flange. This device is comparatively expensive and not entirely effective. It has been proposed to use in place of the ordinary wooden protector a sheet metal cap fitting over the end of the flanged ipe and secured in place by lugs extending irom the rim of the cap and bendable under the under side of the flange and it has also been proposed to provide in connection with such 7 protected caps aninner lining of some compressible material which will come in direct contact with the machined face of the flange when the cap is applied.

The novel features of my flange protector consist, in the first place, in providing as a protector for the face of the flange a single flat plate adapted to cover the flange and preferably, made in annular form, so that when the plate is applied to the flange it leaves the interior of the pipe accessible to hooks or other handling devices. Extending from the edges of the flat plate I provide lugs of bendable material, of such length that they will extend down over the edge of the flange to such a distance as will leave their ends free to be bent up under the flange, so as to secure the protective plate in position. These lugs are preferably attached to the upper face of the flat plate by welding, thus securing the use of the minimum amount of sheet metal in the manufacture of the plate and its lugs. Another novel feature of my construction consists in providing a separable sheet metal ring adapted to fit over the rim of the flange and to be held in place thereon by means of the lugs extending from the edges of the flat plate over the ring and with their ends bent under the flange. I

In all cases I prefer to use in connection with the face protecting plate and the edge protecting ring a layer of compressible material intervening between the metal of the plate and ring and the face and edge of the flange and this compressible layer may conveniently'be attached to the plate and the inside of the ring.

My improvements will be better understood as described in connection with the drawing, in which Figure 1 is a perspective View of the end of a flanged pipe with my improved protecting device applied to it.

Figure 2 is a cross sectional view taken as on the line 2-2 of Fig. 1. V i

Figure 3 is a rear view of the flanged pipe and of theprotective devices applied thereto.

Figure 4 is a perspective view of'the face protecting plate with its attached lugs, and

Figure 5 is a sectional View on an enlarged scale, showing part of the same construction as in Fig. 2.

A. indicates a pipe having at its end an annular flange A B is an annular flat plate of sheet metal, adapted to cover the face of the flange A and provided with a series of lugs C, C, etc., of a bendable metal, preferably formed separate from the plate B and secured to its outer face by welding. These lugs are of suflicient length to extend overthe edge of the flange A and to provide a portion C which may be bent under the inner face of the flange, as indicated in the drawing, so as to secure the plate B in its applied position. D is an annular ring of sheet metal adapted to fit against the edge of the flange and to be held in position by the lugs C, C, etc., as shown in Fig. 1. E is a facing of compressible material, affixed to the inner face of the plate B and E a similar layer" C, C, etc. extending over the outer face of the ring D and the lug ends C are then bent under the inner face of the flange, securing both the face plate and edge protecting ring 5 in position. The annular form of the face plate B permits the entrance of hooks into the end of the pipe for its convenient handling and when the pipe is ready for use the flange protecting device is readily disassembled and removed by simply turning outward the locking ends C of the lugs.

It will be recognized that my device is of such a character that it can be produced at minimum cost and that it in use affords a remarkably secure protection to the flange while permitting of the handling of the heavy pipes or other conduits in the ordinary and most convenient manner.

Having now described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. A flange protector for conduits consisting of a flat plate adapted to extend over the face of the flange, having bendable lugs extending from the outer edge of the flat plate and adapted to extend over the edge of the flange and be bent under the inner face thereof and a separable cylindrical ring adapted to surround and protect the edge of the flange and to be held in place by the bendable lugs.

2. A flange protector device as called for in claim 1, in which the flat plate for covering the face of the flange is made annular to permit access of handling hooks to the inside of the conduit.

3. A flange protector as called for in claim 1, in which the bendable lugs are welded to the upper surface of a flat plate.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2455860 *Nov 22, 1943Dec 7, 1948Scholl Mfg Co IncTube capping machine
US2483911 *Sep 11, 1945Oct 4, 1949Phillips Petroleum CoInjector
US2708453 *Oct 18, 1951May 17, 1955Dikkers & Co N V GMeans for protecting a flange or like disc-shaped body
US3563277 *Aug 29, 1969Feb 16, 1971Joseph KlipperPipe flange protective cover
US4014368 *Feb 13, 1976Mar 29, 1977Alliance Plastics, Inc.Flange protector
US4799716 *May 15, 1987Jan 24, 1989Oteco Equipment CompanyProtector for pipe connector hubs
US5435350 *May 27, 1994Jul 25, 1995Bunzl Plastics, Inc.Corrugated plastic flange protective cover
US5503189 *May 15, 1995Apr 2, 1996Bunzl Plastics, Inc.Flange protector having flexible coupling insert and method for detachably coupling same to a conduit
US5546989 *Jul 21, 1995Aug 20, 1996Bunzl Plastics, Inc.Weatherproof flange protective cover and method for protecting a machined surface of a pipe flange using same
US6820890Mar 26, 2003Nov 23, 2004Midway Products Group, Inc.Vehicle hitch receiver tube reinforcement ring, vehicle hitch including the reinforcement ring
US8443844Nov 30, 2009May 21, 2013Protective Industries, Inc.Flange protector
US8671991May 29, 2012Mar 18, 2014Protective Industries, Inc.Flange protector and lug
US8800603Dec 15, 2011Aug 12, 2014Protective Industries, Inc.Flange protector and masking device
US20120160359 *Feb 17, 2012Jun 28, 2012Baker Jerry GEnd protector system for tubular goods
US20120247607 *Mar 31, 2011Oct 4, 2012Ufp Technologies, Inc.Sanitary cap and system
WO2011065978A1Nov 29, 2010Jun 3, 2011Protective Industries, Inc.Flange protector
U.S. Classification138/96.00R
International ClassificationB65D59/00
Cooperative ClassificationB65D59/00, F16L57/005
European ClassificationB65D59/00, F16L57/00D