US3567843A - Electrical connector for waterproof jacketed armored cable - Google Patents

Electrical connector for waterproof jacketed armored cable Download PDF

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Publication number
US3567843A
US3567843A US3567843DA US3567843A US 3567843 A US3567843 A US 3567843A US 3567843D A US3567843D A US 3567843DA US 3567843 A US3567843 A US 3567843A
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United States
Prior art keywords
grommet
cable
connector
stirrups
armor
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Expired - Lifetime
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Kenneth M Collins
John B Davis
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Cooper Industries LLC
GROUSE HINDS CO
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GROUSE HINDS CO
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Assigned to COOPER INDUSTRIES, INC, A CORP.OF OHIO reassignment COOPER INDUSTRIES, INC, A CORP.OF OHIO ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: CROUSE-HINDS COMPANY
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Application status is Expired - Lifetime legal-status Critical

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00Installations of electric cables or lines in or on buildings, equivalent structures or vehicles
    • H02G3/02Details
    • H02G3/06Joints for connecting lengths of protective tubing or channels, to each other or to casings, e.g. to distribution boxes; Ensuring electrical continuity in the joint
    • H02G3/0616Joints for connecting tubing to casing

Abstract

An electrical connector for attaching an armored cable having an exterior waterproof jacket to a junction box, such that the cable is rigidly mechanically gripped by the connector, is electrically grounded thereto, and is sealed therein in a watertight seal, consists of a resilient grommet surrounding the cable jacket and compressed between two threaded members to provide a watertight seal and mechanical gripping, and a plurality of metallic stirrups straddling the inner and outer surfaces of the grommet at one end thereof to coact both with an exposed portion of the metallic armor of the cable and the metal of the connector to provide electrical grounding and additional mechanical gripping of the cable, the connector being further provided with an additional threaded portion for attachment to the junction box.

Description

4 2,503,169 4/1950 Phillips United States Patent [54] ELECTRICAL CONNECTOR FOR WATERPROOF JACKETED ARMORED CABLE 3 Claims, 1 Drawing Fig.

[52] U.S. Cl 174/51, 174/65, 174/78, 285/161, 285/341, 339/14 [51] Int. Cl. H01! 3/04, H02g 3/18 [50] Field ofSearch 174/51, 65,

[56] References Cited UNITED STATES PATENTS Primary Examiner Laramie E. Askin Attorney-Robert E. Sandt ABSTRACT: An electrical connector for attaching an armored cable having an exterior waterproof jacket to a junction box, such that the cable is rigidly mechanically gripped by the connector, is electrically grounded thereto, and is sealed therein in a'watertight seal, consists of a resilient grommet surrounding the cable jacket and compressed between two threaded members to provide a watertight seal and mechanical gripping, and a plurality of metallic stirrups straddling the inner and outer surfaces of the grommet at one end thereof to coact both with an exposed portion of the metallic armor of the cable and the metal of the connector to provide electrical grounding and additional mechanical gripping of the cable, the connector being further provided with an additional threaded portion for attachment to the junction box.

PATENTEDMAR 2197i N ENTORS ATTO RN ZE'IY ELECTRICAL CONNECTOR FOR WATERPROOF JACKETED ARMORED CABLE BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to electrical connections and more particularly to a connector for attaching an armored cable having a waterproof jacket to an electrical junction box.

2. Description of the Prior Art Connectors for attaching nonarmored jacketed power cables to junction boxes are well known in the art. Generically these usually consist of a resilient grommet which is compressed between two threaded members of a connector to form a watertight gland for sealing the cable to the connectors.

Also, well known in theart are connectors for connecting nonjacketed armored cables to a junction box, wherein the armored cable is gripped by setscrews in the connector. Prior workers in the field have combined the features of the latter type of connector with a resilient grommet to provide a connector for jacketed armored cable wherein the grommeted gland seals against the jacket and the setscrews bear on an exposed portion of the armor to provide electrical grounding. To prevent deformation of the armor a metal sleeve or pressure pads are frequently interposed between the armorand in the setscrews.

In other known connectors for the same purpose, resilient grommets of rubberlike material and deformable lead grommets with suitable compression fittings are employed to secure the watertight seal and electrical continuity.

Finally, in another known construction a grounding sleeve is forced between the insulating jacket and the armor of the cable and a depending tab bent back upon the jacket to provide a ground connection with the metal surface of the connector when it is assembled on the cable with the compressible waterproof bushing.

SUMMARY OF THE INVENTION It is an object of this invention to provide a connector for attaching jacketed armored cable to an electrical junction box in a watertight seal with electrical grounding of the cable armor, wherein the connector comprises resilient means having electrically conducting inserts integral therewith and means for deformably compressing both the bushing and the inserts to coact respectively with the jacket and the armor of the cable inserted therein to provide the electrical and watertight connection thereto,

It is a further object to provide a connector in accordance with the foregoing object wherein the maximum number of components are preassembled to minimize assembly in the field and obviate the loss of parts.

Yet another object is to provide a connector in accordance with the foregoing objects, which through the employment of various sizes can accommodate a range of sizes of cables.

A final and specific object of the invention is to provide a connector for attaching jacketed armored cables to an electrical junction boxwherein the connector comprises a resilient grommet having a plurality of metallic stirrups formed upon one end thereof with the legs of each stirrup contacting the inner and outer surfaces of the grommet, and a pair of complementarily threaded members, one of which has an inner conical surface surrounding the grommet, the axial relative movement of the members providing a radial compression of the grommet and the inserts upon the cable inserted therein to provide both a seal and an electrical grounding.

The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of a preferred embodiment of the invention, as illustrated in the accompanying drawing, which is a cross-sectional view taken on the axis of the connector.

DESCRIPTION OF THE PREFERRED EMBODIMENT In the single drawing the connector 10 is intended to connect the cable 20 to an electrical junction box (not shown). This connection is achieved conventionally by passing the male threaded body member 14 through an opening in the box and threading a nut thereon, with suitable washers and thread ubricant to achieve a watertight and electrically grounded joint between the connector and the box. Alternatively the male threaded body member 14 can be threaded directly into a female threaded boss on the junction box with a suitable electrically conductive sealant to provide the requisite waterproof and electrically conductive joint.

The foregoing is by way of background, and since it is conventional practice, forms no part of the invention. The connector l0 acts as a waterproof gland to seal the cable to the box. In addition to this function it must provide electrical continuity between the armor of the cable and the box, as well as a rigid mechanical connection thereto to resist any strains to which the cable might be subjected in use.

The cable 20 isan industrial standard jacketed armored cable wherein the outer jacket 21 of polyvinyl-chloride, or other suitable plastic or synthetic rubber composition protects the cable from corrosion by providing a waterproof protective covering. Inside the jacket 21, is an interlocking helical metal armor 22 for protection against physical damage to the insulated cable core 23. The cable 20 is prepared for installation by stripping both the jacket 21 and the armor back from the cable core 23 a distance sufficient to make up theelectrical connections within the junction box, in the usual manner. The jacket 21 is then stripped back further to expose a short length of the armor 22 beneath.

The nut 11, washer l2, and grommet 13 (with integral stirrups 15) are then slipped upon the thus-prepared cable 20 and the cable passedthrough the body member 14, which has previously been fastened to the junction box (not shown). The cable is then pressed snugly forward (to the right as viewed in the drawing) and the nut 11 threaded tightly upon the body member 14. This automatically provides the requisite connec tion by coaction of the elements now to be described in detail.

The body member 14, shown in the drawing to approximate scale, consists of the male threaded portion 14a (for connection to the junction box), the male threaded portion 14b (to receive nut 11), the. internal conical bore 140, and a wrenching flange 14d, which may be-hexagonal or any other convenient shape. The internally threaded nut ll, also drawn approximately to scale, is generally cup-shaped with a tapered, or chamfered, surface 11a formed in the bottom around the opening 11b. This chamfer, while it is not critical, does contribute toward the compression of the grommet to effect a tight seal. The washer 12, dished to an angle cor responding to the chamfer on nut 11, fits around the jacket 21. of cable 20 and provides a free-sliding surface with nut 11 to permit rotation thereof without rotation of the grommet 13.

The grommet 13 is compressed between the washer 12 and the internal conical surface 140 of body member 14 as nut 11 is threaded tightly thereon. Since the reactive forces of these surfaces is radially inward, the grommet 13 is forced to grip the cable tightly and conform to every convolution thereof in a watertight seal, the grommet being fabricated of a resilient material such as, for example, synthetic rubber of the requisite resiliency.

Preassembled to the grommet 13 are three (preferably) stirrups 15 which are crimped at spacings over the end of the grommet so that one leg fits along the inner wall, and the other leg fits along the outer wall of the grommet, the connecting web fitting over the end of the grommet to connect the two legs. A lip 15a depending from the connecting web provides an inwardly protruding stop against which the metallic armor 22 of the cable is inserted upon assembly. The length of exposed armor on the pre-prepared cable is stripped to approximately the length (or slightly greater than the length) of the inner legs of the stirrups 15. These stirrups are preferably extruded in the desired cross section, which includes internal teeth. The individual stirrups are then cut from the extruded length and crimped on the grommet in the desired angular spacing (preferably at 120). The metallic composition is so chosen for its electrical conductivity, its compatibility with the metals of the cable armor and the connector body materials (to resist corrosion) and to provide the requisite deformability when the connector is assembled upon the cable. The deformation is effected by the clamping action of the conical sec- .tion 140 of the body member 14 which coacts with the outer the cable and the connector (and derivatively to the junction box) is achieved by the elampingaction of the conical surface of the connector body acting both upon the grommet 13 and thestirrups 15 as the nut 11 is tightened, forcing these elements to bear tightly upon the cable jacket and armor respectively. The coaction of the grommet with the cable jacket further provides the requisite watertight seal, while the coaction of the stirrups with both the cable armor and the connector body provides the requisite electrical bonding.

The suitability of connectors of this general variety for their intended use is determined by specifications issued by the various standards associations, such as, for example, the Canadian Standards Association. Laboratory testing of submitted samples for conformance with the specifications determines whether the samples are approved and thus permits listing of the equipment as approved. These specifications are frequently very exacting, and conformance thereto imposes very stringent requirements upon the designer. This, coupled with the competitive market in the connector business, further requires that the designer minimize both the number and complexity of the component parts so as to produce a functionally superior product at a minimum cost. A final desideratum is that the connector be so designed that field installation is expedited.

While the invention has been particularly shown and described with reference to a preferred embodiment thereof, it will be understood by those skilled in the art that various changes in form and details'may be made therein without departing from the spirit and scope of the invention.

We claim:

1. An electrical connector for affixing a waterproof jacketed armored electrical cable toa junction box in an electrically grounded watertight connection thereto, comprising:

a. a body member having a first threaded portion for connection to the box, an internal conical bore, and a second threaded portion;

b. a resilient grommet having a cylindrical inner bore sub stantially equal to the outer diameter of the cable to be secured, and a conical outer surface complementary to the conical bore in said body member inserted in said bore;

c. a plurality of grounding stirrups secured to said grommet,

said stirrups each having first and second leg portions connected by a web in a generally U-shaped configuration, and the said stirrups each include a tab depending inward as a prolongation of the web connecting the said 7 two legs, the first leg lying contiguous to the cylindrical surface of the grommet and the second leg lying contiguous to the conical surface of the grommet, and the web overlying the end of the grommet whereby the tabs serve as a stop to coaet with the armor of the cable to limit the insertion thereof and automatically align the bared armor with the grounding stirrups;

d. a cup-shaped nut having an opening therein to pass the cable, and threaded upon the said second portion of said body member to, together with said body member, enclose said grommet; and

e. whereby when a jacketed armored cable, pre-prepared to bare a length of the armor substantially equal to the length of the said first legs of said stirrups and to expose a length of wiring mterna of the armor sufficrent to effect electrical connections, is inserted through said opening in the said nut and into the cylindrical bore with the exposed armor in apposition to the said first legs of said stirrups and the nut tightened to deform the grommet and the stirrups, the requisite grounded watertight connection between the connector and the cable is secured.

2. The connector of claim 1 wherein the stirrups are crimped upon the grommet to provide a unitary preassembly therewith.

3. The connector of claim 2 wherein the said nut is provided with a chamfered surface surrounding the opening, and the grommet is provided with a sloping end wall complementary to the chamfer, and a dished washer is interposed between the said nut and the grommet to provide a radial component of force to further compress the grommet as the nut is tightened upon the body member.

UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION 3,567,843 Dated March 2, 1971 Kenneth M. Collins et a1.

Patent No.

Inventor(s) It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

On the cover sheet [73] "Grouse-Hinds Company" should read Grouse-Hinds Company Signed and sealed this 14th day of September 1971.

(SEAL) Attest:

EDWARD M.FLETCHER JR. ,1 Attestin Officer W W I Actlng Commlssloncr of Pat FORM PO-IOSD (10-69)

Claims (3)

1. An electrical connector for affixing a waterproof jacketed armored electrical cable to a junction box in an electrically grounded watertight connection thereto, comprising: a. a body member having a first threaded portion for connection to the box, an internal conical bore, and a second threaded portion; b. a resilient grommet having a cylindrical inner bore substantially equal to the outer diameter of the cable to be secured, and a conical outer surface complementary to the conical bore in said body member inserted in said bore; c. a plurality of grounding stirrups secured to said grommet, said stirrups each having first and second leg portions connected by a web in a generally U-shaped configuration, and the said stirrups each include a tab depending inward as a prolongation of the web connecting the said two legs, the first leg lying contiguous to the cylindrical surface of the grommet and the second leg lying contiguous to the conical surface of the grommet, and the web overlying the end of the grommet whereby the tabs serve as a stop to coact with the armor of the cable to limit the insertion thereof and automatically align the bared armor with the grounding stirrups; d. a cup-shaped nut having an opening therein to pass the cable, and threaded upon the said second portion of said body member to, together with said body member, enclose said grommet; and e. whereby when a jacketed armored cable, pre-prepared to bare a length of the armor substantially equal to the length of the said first legs of said stirrups and to expose a length of wiring internal of the armor sufficient to effect electrical connections, is inserted through said opening in the said nut and into the cylindrical bore with the exposed armor in apposition to the said first legs of said stirrups and the nut tightened to deform the grommet and the stirrups, the requisite grounded watertight connection between the connector and the cable is secured.
2. The connector of claim 1 wherein the stirrups are crimped upon the grommet to provide a unitary preassembly therewith.
3. The connector of claim 2 wherein the said nut is provided with a chamfered surface surrounding the opening, and the grommet is provided with a sloping end wall complementary to the chamfer, and a dished washer is interposed between the said nut and the grommet to provide a radial component of force to further compress the grommet as the nut is tightened upon the body member.
US3567843D 1968-11-06 1968-11-06 Electrical connector for waterproof jacketed armored cable Expired - Lifetime US3567843A (en)

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Cited By (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3899046A (en) * 1974-07-03 1975-08-12 Clark Equipment Co Coupling electric line inside of fluid conduit
US4022966A (en) * 1976-06-16 1977-05-10 I-T-E Imperial Corporation Efcor Division Ground connector
US4030741A (en) * 1975-01-20 1977-06-21 Harvey Hubbell, Incorporated Cord grips
FR2463526A1 (en) * 1979-08-13 1981-02-20 Thomas & Betts Corp cable connector armor metal sheathed
US4375011A (en) * 1980-05-07 1983-02-22 Gruenau Dietrich Cable connector
US4538053A (en) * 1983-01-11 1985-08-27 Raychem Corporation Termination apparatus for heaters in hazardous environments
US4549038A (en) * 1983-08-22 1985-10-22 Ideal Industries, Inc. Cord grip
US4549755A (en) * 1983-06-16 1985-10-29 Efcor, Inc. Armored cable connector
US4571018A (en) * 1984-05-15 1986-02-18 Houston Geophysical Products, Inc. Seismic marsh T-coupler with removable polarized connectors
US4692561A (en) * 1985-09-26 1987-09-08 Commander Electrical Materials, Inc. Cable connector
US4692562A (en) * 1985-09-26 1987-09-08 Commander Electrical Materials, Inc. Seal for a cable connector
US4722695A (en) * 1984-11-13 1988-02-02 Zwicker & Hensel Elektronische Schalttechnik Pressurized water-proof connection for an electrical cable
US4789759A (en) * 1986-03-25 1988-12-06 Amp Incorporated Assembly for an electrical cable providing strain relief and a water-tight seal
US4814547A (en) * 1987-10-06 1989-03-21 Cooper Industries, Inc. Cable connector
US4885429A (en) * 1989-01-10 1989-12-05 Hubbell Incorporated Metal clad cable connector
US5208427A (en) * 1992-01-31 1993-05-04 Thomas & Betts Corporation Connector for terminating electrical cable assemblies of multiple configurations
US5321205A (en) * 1993-01-15 1994-06-14 Thomas & Betts Corporation Electrical connector fitting
US5789706A (en) * 1997-01-17 1998-08-04 Perkins; Vernon Electrical cable to utilization device quick connector
US6034325A (en) * 1997-09-16 2000-03-07 Thomas & Betts Corporation Connector for armored electrical cable
US6160221A (en) * 1997-09-16 2000-12-12 Agro Ag Screwed cable gland for a shielded cable
US6162995A (en) * 1992-04-27 2000-12-19 General Llc Armored electrical cable connector
US6224752B1 (en) * 1998-09-11 2001-05-01 Aqua Partners, Ltd. Wastewater treatment system with operations control center
USRE37724E1 (en) 1997-09-29 2002-06-04 Wayne Harrison Robinson Kenny clamp
US6409179B1 (en) * 2000-02-09 2002-06-25 Avaya Technology Corp. Cable sealing arrangements and sealing members for use therein
US6444907B1 (en) 2001-05-01 2002-09-03 Bridgeport Fittings, Inc. Electrical cable connector
US20030062688A1 (en) * 2001-10-03 2003-04-03 Jamesbury, Inc. Stem or shaft seal arrangement
US20030155147A1 (en) * 2002-02-21 2003-08-21 Robinson Wayne H. Kenny Clamp
US20040070207A1 (en) * 2002-10-09 2004-04-15 Olson Mark H. Nut type raintight threadless couplings & connectors for electrical conduits
US20050102912A1 (en) * 2001-05-25 2005-05-19 Gallant Dennis J. Headwall
US7080859B1 (en) * 2004-08-06 2006-07-25 Arlington Industries, Inc. Rain tight fitting for metal tubing
US20060180228A1 (en) * 2004-01-29 2006-08-17 Filho Helio M D Assembly and method for stiffening a flexible pipe
GB2448595A (en) * 2007-04-17 2008-10-22 Thomas & Betts Int Coaxial cable connector gripping cable at two different locations
US20080268687A1 (en) * 2007-04-17 2008-10-30 Mark Dixon Electrical metal clad connectors and methods of use
US20090269956A1 (en) * 2008-04-24 2009-10-29 Baker Hughes Incorporated Pothead for Use in Highly Severe Conditions
US20110033165A1 (en) * 2009-08-07 2011-02-10 John Guest International Limited Connectors for cable carrying conduits
US20110167925A1 (en) * 2008-10-01 2011-07-14 Fujikura Ltd. Waterproofing apparatus for electrical cable end, and method of waterproofing electrical cable end
US20120178290A1 (en) * 2011-01-11 2012-07-12 Chih-Min Yu Solar power cable connector
US20120205023A1 (en) * 2009-08-21 2012-08-16 Samuel Liam Proud Filler assembly for cable gland
US20120292100A1 (en) * 2011-05-20 2012-11-22 Sany Heavy Equipment, Usa R&D Institute Accessible indirect entry cable gland
US20130168959A1 (en) * 2010-07-13 2013-07-04 Cliquot Holdings (Pty) Ltd Pipe fitting
US8766109B2 (en) 2011-06-27 2014-07-01 Thomas & Betts International, Inc. Cable connector with bushing element
US8819893B2 (en) * 2012-10-26 2014-09-02 Asahi Denshi Co., Ltd. Cable bushing
US20150155648A1 (en) * 2013-12-04 2015-06-04 GiMer Medical Co., Ltd. Water resistant connector
US20150162736A1 (en) * 2013-12-11 2015-06-11 Changzhou Amphenol Fuyang Communication Equip. Co., Ltd. Waterproof assembly
US9431815B1 (en) 2015-06-02 2016-08-30 Robert Findley Cable fitting with grip assembly
US20170018871A1 (en) * 2015-07-14 2017-01-19 Commscope Technologies Llc Protective sleeve for weatherproofing boot for interface of cable to remote radio head
US20170110224A1 (en) * 2015-10-16 2017-04-20 New Green Co., Ltd. Cable fixator
US10193321B2 (en) 2009-08-21 2019-01-29 Cmp Products Limited Filler assembly for cable gland

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US2503169A (en) * 1946-12-13 1950-04-04 Walter E Phillips Hose coupling
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Cited By (72)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3899046A (en) * 1974-07-03 1975-08-12 Clark Equipment Co Coupling electric line inside of fluid conduit
US4030741A (en) * 1975-01-20 1977-06-21 Harvey Hubbell, Incorporated Cord grips
US4022966A (en) * 1976-06-16 1977-05-10 I-T-E Imperial Corporation Efcor Division Ground connector
US4273405A (en) * 1979-08-13 1981-06-16 Thomas & Betts Corporation Jacketed metal clad cable connector
FR2463526A1 (en) * 1979-08-13 1981-02-20 Thomas & Betts Corp cable connector armor metal sheathed
US4375011A (en) * 1980-05-07 1983-02-22 Gruenau Dietrich Cable connector
US4538053A (en) * 1983-01-11 1985-08-27 Raychem Corporation Termination apparatus for heaters in hazardous environments
US4549755A (en) * 1983-06-16 1985-10-29 Efcor, Inc. Armored cable connector
US4549038A (en) * 1983-08-22 1985-10-22 Ideal Industries, Inc. Cord grip
US4571018A (en) * 1984-05-15 1986-02-18 Houston Geophysical Products, Inc. Seismic marsh T-coupler with removable polarized connectors
US4722695A (en) * 1984-11-13 1988-02-02 Zwicker & Hensel Elektronische Schalttechnik Pressurized water-proof connection for an electrical cable
US4692561A (en) * 1985-09-26 1987-09-08 Commander Electrical Materials, Inc. Cable connector
US4692562A (en) * 1985-09-26 1987-09-08 Commander Electrical Materials, Inc. Seal for a cable connector
US4789759A (en) * 1986-03-25 1988-12-06 Amp Incorporated Assembly for an electrical cable providing strain relief and a water-tight seal
US4814547A (en) * 1987-10-06 1989-03-21 Cooper Industries, Inc. Cable connector
US4885429A (en) * 1989-01-10 1989-12-05 Hubbell Incorporated Metal clad cable connector
US5208427A (en) * 1992-01-31 1993-05-04 Thomas & Betts Corporation Connector for terminating electrical cable assemblies of multiple configurations
US6162995A (en) * 1992-04-27 2000-12-19 General Llc Armored electrical cable connector
US5321205A (en) * 1993-01-15 1994-06-14 Thomas & Betts Corporation Electrical connector fitting
US5789706A (en) * 1997-01-17 1998-08-04 Perkins; Vernon Electrical cable to utilization device quick connector
USRE38294E1 (en) * 1997-09-16 2003-11-04 Thomas & Betts Corporation Connector for armored electrical cable
US6034325A (en) * 1997-09-16 2000-03-07 Thomas & Betts Corporation Connector for armored electrical cable
US6160221A (en) * 1997-09-16 2000-12-12 Agro Ag Screwed cable gland for a shielded cable
USRE37724E1 (en) 1997-09-29 2002-06-04 Wayne Harrison Robinson Kenny clamp
US6224752B1 (en) * 1998-09-11 2001-05-01 Aqua Partners, Ltd. Wastewater treatment system with operations control center
US6409179B1 (en) * 2000-02-09 2002-06-25 Avaya Technology Corp. Cable sealing arrangements and sealing members for use therein
US6444907B1 (en) 2001-05-01 2002-09-03 Bridgeport Fittings, Inc. Electrical cable connector
US20050102912A1 (en) * 2001-05-25 2005-05-19 Gallant Dennis J. Headwall
US20030062688A1 (en) * 2001-10-03 2003-04-03 Jamesbury, Inc. Stem or shaft seal arrangement
US7017915B2 (en) * 2001-10-03 2006-03-28 Metso Automation Usa Inc. Stem or shaft seal arrangement
US20030155147A1 (en) * 2002-02-21 2003-08-21 Robinson Wayne H. Kenny Clamp
US7595455B2 (en) * 2002-02-21 2009-09-29 Wayne H. Robinson Kenny clamp
US20040070207A1 (en) * 2002-10-09 2004-04-15 Olson Mark H. Nut type raintight threadless couplings & connectors for electrical conduits
US6988746B2 (en) * 2002-10-09 2006-01-24 Olson Mark H Nut type raintight threadless couplings and connectors for electrical conduits
US20060180228A1 (en) * 2004-01-29 2006-08-17 Filho Helio M D Assembly and method for stiffening a flexible pipe
US7210504B2 (en) * 2004-01-29 2007-05-01 Wellstream International Limited Assembly and method for stiffening a flexible pipe
US7080859B1 (en) * 2004-08-06 2006-07-25 Arlington Industries, Inc. Rain tight fitting for metal tubing
GB2448595B (en) * 2007-04-17 2011-01-26 Thomas & Betts Int Coaxial cable connector with gripping ferrule
US7901222B2 (en) 2007-04-17 2011-03-08 Southwire Company Electrical metal clad connectors and methods of use
US8105096B2 (en) 2007-04-17 2012-01-31 Southwire Company Electrical metal clad connectors and methods of use
US7648373B2 (en) * 2007-04-17 2010-01-19 Southwire Company Electrical metal clad connectors and methods of use
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US20080268687A1 (en) * 2007-04-17 2008-10-30 Mark Dixon Electrical metal clad connectors and methods of use
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