US3716815A - Electrical connectors - Google Patents
Electrical connectors Download PDFInfo
- Publication number
- US3716815A US3716815A US00130959A US3716815DA US3716815A US 3716815 A US3716815 A US 3716815A US 00130959 A US00130959 A US 00130959A US 3716815D A US3716815D A US 3716815DA US 3716815 A US3716815 A US 3716815A
- Authority
- US
- United States
- Prior art keywords
- lid
- base
- contact carrier
- hinge
- plastics material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 claims abstract description 23
- 239000004033 plastic Substances 0.000 claims abstract description 22
- 229920003023 plastic Polymers 0.000 claims abstract description 22
- 230000000295 complement effect Effects 0.000 claims description 8
- 239000012858 resilient material Substances 0.000 claims description 6
- 230000006866 deterioration Effects 0.000 description 9
- 238000009413 insulation Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- DHKHKXVYLBGOIT-UHFFFAOYSA-N 1,1-Diethoxyethane Chemical compound CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 241000228212 Aspergillus Species 0.000 description 1
- 241001136494 Talaromyces funiculosus Species 0.000 description 1
- 241000223259 Trichoderma Species 0.000 description 1
- 150000001241 acetals Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 235000020030 perry Nutrition 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 235000010269 sulphur dioxide Nutrition 0.000 description 1
- 239000004291 sulphur dioxide Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000010618 wire wrap Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/44—Means for preventing access to live contacts
- H01R13/447—Shutter or cover plate
Definitions
- ABSTRACT An electrical connector comprising a base of plastics material with a contact carrier upstanding therefrom, and a lid of plastics material hinged to the base and arranged for snap-acting locking closure over the contact carrier, the hinge of the lid embodying a lost-motion mechanism enabling the lid to move bodily in a direction at right-angles to the base during closure.
- the present invention relates to electrical connectors, and more particularly to connectors having a protective hinged lid.
- an electrical connector comprising a base of plastics material with a contact carrier upstanding therefrom, and a lid of plastics material hinged to the base and arranged for snap-acting locking closure over the contact carrier, the hinge of the lid embodying a lost-motion mechanism enabling the lid to move bodily in a direction at right-angles to the base during closure.
- FIG. 1 shows schematically one example of the proposed arrangement whereby a meter inside premises can be read without the need for gaining access to the premises
- FIG. 2 is a perspective view of a connector according to the invention together with a tool for opening a lid thereof,
- FIG. 3 is a furtherjperspective view similar to FIG. 2 but with the lid loosened and ready for lifting by hand,
- FIG. 4 shows the lid of the connector of FIGS. 2 and 3 lifted to its vertical position and the connector ready to receive a plug
- FIG. 5 is a side view of the connector of FIG. 4,
- FIG. 6 is a further perspective view of the second connector embodiment with a tool inserted for releasing the lid thereof
- FIG. 7 is a perspective view of the base of the second connector embodiment with the lid removed therefrom
- FIG. 8 is a perspective view of the lid of the second connector embodiment detached from the base
- FIG. 9 is a cross-section of the second connector embodiment with the lid in a position in which it is ready for closure
- FIG. 10 is a similar cross-section to that of FIG. 9 but with the lid locked in the closed position
- FIG. 11 is a cross-section of the second connector embodiment with the lid opened wide.
- premises 10 have a gas meter 11 therein and the meter 11 has an adaptor 12, whereby the reading on the meter 11 can be derived in electrical form.
- the adaptor 12 is connected by a cable 13 to 'a connector 14 mounted on the outside of a wall 15 of the premises 10.
- the connector 14 enables a meter reader (not shown) with a magnetic tape recorder 16 provided with a carrying strap 17 and a plug 18 to record the meter reading on the meter 11.
- the plug 18 is merely inserted into the connector 14 for a period of, say, five seconds.
- the present invention is concerned with the connector 14 which is shown in FIG. 2.
- the connector 14 is, as shown, arranged for flush mounting and has a hinged lid 19 which can readily be opened by means ofa twopronged tool carried by the meter reader but as described later cannot otherwise be opened easily.
- FIG. 3 shows the lid 19 after it has been loosened by the tool 20, and
- FIG. 4 shows the lid 19 hinged to a vertical position and the connector 14 ready to receive the plug 18. It will be seen in FIG. 4 that the lid 19 has two recesses 21 and 22 to receive the two prongs of the tool 20.
- the connector 14 has an upstanding circular boss 23 with contacts 24, whereby connections can be made to the plug 18.
- FIGS. 4 and 5 the connector 14 is shown with the lid 19 in an open position.
- the lid is hinged to two posts 25 and 26 by means of hinge pins,
- hinge pins are secured to the lid and engage substantially triangular recesses'in the posts, one such recess being shown in dotted lines at 28 in FIG. 5.
- the lid can move substantially parallel to the base 29 of the connector and to a lesser extent it can move parallel to the surface of the base 29.
- the lid when the lid is closed, it can locate itself over the upstanding boss 23.
- the lid has three inwardly directed nibs 30, 31 and 32 lying on a circle for locating the lid on the boss 23.
- the inner diameter of the nibs in less than the outer diameter of the boss, and the nibs are undercut whereby the lid can snap into positionover the boss.
- the boss has for this purpose a flange 33 seen in FIGS. 4 and 5.
- the two prongs are inserted into the two recesses 21 and 22 and is rocked as a lever to snap open the lid.
- a cranked lever with two prongs is necessary for this, and as the connector is fitted flush to a wall, astraight tool such as a slender screwdriver or rod is not adequate.
- the contacts 24 are preferably headed and extend rearwardly through the boss 23.
- the rear shanks of the contact may be of square cross-section, whereby a wire-wrapping technique can be used for making connections thereto.
- the inside of the lid is provided with a pad 34 of resilient insulating material, such as foamed plastics materials which is compressed over the contacts 24 to complete the seal and protect them against ingress of moisture and grit.
- the boss 23 is provided with two bayonet slots 35 and 36 for receiving bayonet pins on the plug 18.
- the slots 35 and 36 do not lie on a diameter and this asymmetry ensures that the mating plug which has correspondingly staggered bayonet pins can fit in only one position.
- a tough plastics material is used for the base and lid of the connector 14.
- the preferred material is that sold as DEL- RIN 507 (Registered Trademark) which is an acetal thermoplastic polymer. This also has excellent resistance to moisture, low temperatures and ultra-violet radiation. V a
- the prongs of the tool 20 are inserted into the recesses 21 and 22 and the lid is opened by leverage.
- the lid opens with a snap-action and the triangular recesses in the posts permit the lid to snap into the tool 20 for opening the lid 19.
- the tool 20 is shown with its two prongs in the two cavities 21' and 22 ready for opening the lid.
- the lid is opened by lowering the handle of the tool 20 upwardly as shown by the arrow 40 instead of downwardly as in the other embodiment.
- the connector shown comprises a circular boss 23 upstanding from the base, the boss carrying the contacts 24, as in the other embodiment.
- the lid 19 contains a circular recess 41 into which the resilient pad 34 of foamed plastics material is fitted. As shown in FIG. 10, the upper end of the boss 23 fits into the recess 41 when the lid 19 is closed and the pad 34 completes the seal over the contacts 24, as in the previous embodiment.
- the snap-action closure is effected in this embodiment directly between the lid and the base instead of between the lid and the boss.
- the base has an inclined undercut 42 adjacent the hinge and extending between the two hinge-posts 25 and 26.
- the lid 19 has, adjacent the hinge, two inwardly directed projections 45 and 46 each of which has an inclined face 47 in which the inclination is complementary to the inclination of the undercut 42.
- Each of the projections 45 and 46 has a further inclined face 48 of an inclination complementary to that of a face 49 on the base extending between the hinge-posts 25 and 26.
- the lid 19 Remote from the hinge, the lid 19 has three inwardly directed projections 50, 51 and 52 respectively shown most clearly in FIG. 8.
- Each of these projections has an inclined face 53 with an inclination complementary to the inclination of the inclined face of the undercut 43.
- each of the projections 50, 51 and 52 has a further inclined face 54 of which the inclination is complementary to the inclination of a face 55 extending from the face 43 on the base.
- the lid is then given a sharp blow with the hand to move it parallel to the base (as shown by the arrow 56) and snap it into locked engagement with the base.
- the locked position is as shown in FIG. 10.
- the rim 57 contains a V-shaped groove along its length as shown, and this engages over an inverted-V- shaped projection along the rim of the base as shown.
- Lost-motion for the hinge in this embodiment is provided by two slots 59 (FIG. 7) in the hinge-posts 25 and 26, the lid 19 being provided with hinge-pins 60, which are a loose fit in the slots 59.
- the slots 59 are open at their bottom ends which, in use, fit against a wall which serves to make the hinge pins cap tive in the slots.
- the two prongs of the tool 20 are inserted into the cavities 21 and 22 in the lid, and as previously explained the tool is levered upwardly.
- the effect of this is to bend the end of the lid carrying the projections 50, S1 and 52 outwardly from the base enabling these projections to snap out of the undercut 43 and release the lid.
- Leverage in the opposite direction will not release the lid and it will be appreciated that with blind cavities 21 and 22 in the lid, the prongs of the tool have to be a close fit in the cavities to enable the lid to be snapped open. in addition to the further measure of security so provided, it has been found necessary to have a two-pronged tool. Attempts to snap open the lid with a single-pronged tool with its one-sided distortion of the lid have failed.
- each contact-to-plunger connection can readily be made less than 50 milliohms.
- Connectors made in accordance with this invention have withstood dry heat tests at 55 C. for 16 hours without deterioration of its electrical characteristics. Samples have likewisewithstood long term damp heat tests without undue reduction of insulation. Cyclic damp heat tests have also been applied without noticeable deterioration. Subjection of the connector to a temperature of C. for 24 hours has not caused deterioration either mechanically or electrically. Driving rain, driving dust and driving sand have not caused loss of insulation or mechanical deterioration. Salt mist tests'produced no corrosion or deterioration of insulation or contact resistance.
- the connector is of simple construction but capable of withstanding harsh environmental conditions without deterioration. in addition it is proof against normal tampering, for example by. children not equipped with a suitable tool for opening the lid. 4
- An electrical connector comprising a base of plastics material with a contact carrier upstanding therefrom, and a lid of plastics material pivotably hinged to the base and arranged for snap acting locking closure over the contact carrier, the hinge of the lid embodying a loss motion mechanism enabling the lid to bodily move simultaneously or independently in directions both parallel to and at right angles to the base during closure, said lid embodying a pad of resilient material which engages the contact carrier when closed and seals the contacts against the environment.
- a connector according to claim 1 wherein the contact carrier has a flange thereon and the lid has a plurality of co-operating resilient projections which yield during closure of the lid and snap into locking engagement with the flange on the contact carrier.
- a connector according to claim 1, wherein the lost-motion mechanism comprises two hinge-posts with slots therein extending in a direction normal to the base, and hinge pins projecting from the lid into the slots.
- a connector according to claim 1 wherein the lid embodies a recess on the inner face thereof which fits over the contact-carrying upper face of the contact carrier when the lid is closed, the recess including containing said pad of resilient material which is compressed against the said upper face when the lid is closed.
- An electrical connector comprising a base of plastics material with a contact carrier upstanding therefrom, and a lid of plastics material hinged to the base and arranged for snap acting locking closure over the contact carrier, the hinge of the lid embodying a lost motion mechanism enabling the lid to move bodily in directions both parallel to and at right angles to the base during closure, said base having a first undercut portion adjacent to the hinge of the lid, and the second undercut portion remote from the hinge, said lid having at least two resiliently inwardly directed cooperating projections which yield and snap into locking engagement with the base on closure of the lid, said undercut portions on the base and the cooperating projections on the lid having faces with complimentary inclinations which cause the lid and base to be urged towards one another when the lid is closed.
- An electrical connector comprising a base of plastics material with a contact carrier upstanding therefrom, said contact carrier having a plurality of spaced apart contact elements protruding from the fact thereof, and a lid of plastics material pivotally hinged to the base and arranged for snap acting locking closure over the contact, carrier, said lid embodying a pad of resilient material which engages the face of said contact carrier when closed and seals both the contacts and the surface of the face between said contacts against the environment.
Landscapes
- Connector Housings Or Holding Contact Members (AREA)
Abstract
Description
Claims (8)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13095971A | 1971-04-05 | 1971-04-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3716815A true US3716815A (en) | 1973-02-13 |
Family
ID=22447204
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00130959A Expired - Lifetime US3716815A (en) | 1971-04-05 | 1971-04-05 | Electrical connectors |
Country Status (1)
Country | Link |
---|---|
US (1) | US3716815A (en) |
Cited By (40)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4070078A (en) * | 1977-03-02 | 1978-01-24 | Reliance Products Corporation | Safety cover for an electrical outlet |
US4099646A (en) * | 1975-07-25 | 1978-07-11 | The Magnavox Company | Housing and cover retaining means |
US4265365A (en) * | 1978-04-28 | 1981-05-05 | Slater Electric Inc. | Moisture resistant electrical outlet box |
US4280633A (en) * | 1978-12-12 | 1981-07-28 | Boros Stephan A | Safety warning device for ignition switch |
US4550964A (en) * | 1984-07-23 | 1985-11-05 | The Siemon Company | Hinged cover and label assembly for connector block |
US4586909A (en) * | 1982-03-05 | 1986-05-06 | Charles Rosato | Inboard/outboard motor bell housing cover |
US4800588A (en) * | 1985-08-07 | 1989-01-24 | Gte Products Corporation | Telephone network interface system |
US4952160A (en) * | 1989-04-17 | 1990-08-28 | Hubbell Incorporated | Marine hull inlet for electrical cables |
US5030118A (en) * | 1990-02-28 | 1991-07-09 | The United States Of America As Represented By The Secretary Of The Air Force | Retractable connector protective cover |
US5030120A (en) * | 1990-07-02 | 1991-07-09 | Hughes Aircraft Company | Dust cover and locking assembly for electrical or fiber optic connector |
US5228584A (en) * | 1992-04-13 | 1993-07-20 | Hubbell Incorporated | Weatherproof electrical enclosure |
US5238133A (en) * | 1990-05-18 | 1993-08-24 | Square D Company | Electrical enclosure with rainproof seal |
US5255807A (en) * | 1992-06-16 | 1993-10-26 | Eaton Corporation | Container |
US5280135A (en) * | 1991-08-09 | 1994-01-18 | Intermatic Incorporated | Outdoor electrical outlet cover |
US5350309A (en) * | 1992-03-24 | 1994-09-27 | Yazaki Corporation | Connector with a protective cover |
US5362924A (en) * | 1992-05-19 | 1994-11-08 | Correnti Giuseppe A | Protective cover for electrical wall sockets |
US5499734A (en) * | 1995-04-17 | 1996-03-19 | Tesco Controls, Inc. | Labyrinth barrier ventilated waterproff enclosure |
US5571023A (en) * | 1995-05-17 | 1996-11-05 | Hubbell Incorporated | Electrical connector housing with lid |
US5621192A (en) * | 1993-06-21 | 1997-04-15 | Thomas & Betts Corporation | Housing for electrical outlets |
US5675126A (en) * | 1995-08-11 | 1997-10-07 | Halvorsen; Gary | Outlet cover |
US6226835B1 (en) | 1999-09-10 | 2001-05-08 | Newell Operating Company | Hinge |
US6437242B1 (en) | 2001-01-05 | 2002-08-20 | Pass & Seymour, Inc | Opening mechanism for electrical outlet box |
US6536741B2 (en) | 2001-03-02 | 2003-03-25 | Brian Bucciarelli | Insulating insert for magnetic valves |
EP1333534A2 (en) * | 2002-01-31 | 2003-08-06 | ABB PATENT GmbH | Electrical apparatus with cover and hinged lockable shutter |
US20040043649A1 (en) * | 2000-08-09 | 2004-03-04 | O'connell Michelle Clare | Safety cover |
WO2004109864A1 (en) * | 2003-06-03 | 2004-12-16 | Legrand | Electrical connection elements with increased sealing |
US20050072058A1 (en) * | 2003-09-19 | 2005-04-07 | Hajack Michael G. | Guard for protecting wall mounted switches, alarms and the like |
US6894223B1 (en) * | 1999-12-06 | 2005-05-17 | Taymac Corporation | Horizontal and vertical mountable weatherproof cover plate |
US20060015069A1 (en) * | 2002-08-02 | 2006-01-19 | C.R. Bard, Inc. | Transobturator introducer system for sling suspension system |
US7029296B1 (en) * | 2000-02-07 | 2006-04-18 | Communication And Power Industires | Cover assembly for vacuum electron device |
US20070007030A1 (en) * | 2005-07-11 | 2007-01-11 | Twins Investments Company | Outdoor cord connection cover apparatus |
US7201590B1 (en) * | 2006-07-19 | 2007-04-10 | Swain Industry Co., Ltd. | Water-resistant electric connector assembly |
US7381895B1 (en) | 1999-12-06 | 2008-06-03 | Taymac Corporation | Weatherproof cover plate |
US7538272B1 (en) | 1999-12-06 | 2009-05-26 | Taymac Corporation | Weatherproof cover plate |
US20090181611A1 (en) * | 2007-10-12 | 2009-07-16 | Metropolitan Air Technology | Motorized gear and coupling system |
US7968794B1 (en) | 2005-03-29 | 2011-06-28 | Taymac Corporation | Two lid horizontal and vertical mountable electrical device cover |
US9329576B1 (en) * | 2012-10-10 | 2016-05-03 | Reliance Controls Corporation | Weatherproof timer enclosure |
US20190341719A1 (en) * | 2017-02-24 | 2019-11-07 | Panasonic Intellectual Property Management Co., Ltd. | Electronic device |
US20210281058A1 (en) * | 2017-11-02 | 2021-09-09 | Panduit Corp. | Access ports for electrical enclosures |
US11121533B2 (en) | 2018-09-10 | 2021-09-14 | Reliance Controls Corporation | Electrical box with reversible cover and latch |
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US2230869A (en) * | 1938-01-09 | 1941-02-04 | Westinghouse Electric & Mfg Co | Enclosed circuit interrupter |
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DE1062304B (en) * | 1958-02-05 | 1959-07-30 | Westfaelische Metall Ind G M B | Electric socket, especially for motor vehicles and aircraft |
US2997520A (en) * | 1957-12-16 | 1961-08-22 | Bryant Electric Co | Weatherproof covering for an outlet box |
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US3402846A (en) * | 1967-06-01 | 1968-09-24 | Bell Electric Co | Articulated cover and face plate unit |
-
1971
- 1971-04-05 US US00130959A patent/US3716815A/en not_active Expired - Lifetime
Patent Citations (12)
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US160616A (en) * | 1875-03-09 | Improvement in hinges for safe-doors | ||
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US2997520A (en) * | 1957-12-16 | 1961-08-22 | Bryant Electric Co | Weatherproof covering for an outlet box |
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Cited By (59)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4099646A (en) * | 1975-07-25 | 1978-07-11 | The Magnavox Company | Housing and cover retaining means |
US4070078A (en) * | 1977-03-02 | 1978-01-24 | Reliance Products Corporation | Safety cover for an electrical outlet |
US4265365A (en) * | 1978-04-28 | 1981-05-05 | Slater Electric Inc. | Moisture resistant electrical outlet box |
US4280633A (en) * | 1978-12-12 | 1981-07-28 | Boros Stephan A | Safety warning device for ignition switch |
US4586909A (en) * | 1982-03-05 | 1986-05-06 | Charles Rosato | Inboard/outboard motor bell housing cover |
US4550964A (en) * | 1984-07-23 | 1985-11-05 | The Siemon Company | Hinged cover and label assembly for connector block |
US4800588A (en) * | 1985-08-07 | 1989-01-24 | Gte Products Corporation | Telephone network interface system |
US4952160A (en) * | 1989-04-17 | 1990-08-28 | Hubbell Incorporated | Marine hull inlet for electrical cables |
US5030118A (en) * | 1990-02-28 | 1991-07-09 | The United States Of America As Represented By The Secretary Of The Air Force | Retractable connector protective cover |
US5238133A (en) * | 1990-05-18 | 1993-08-24 | Square D Company | Electrical enclosure with rainproof seal |
US5030120A (en) * | 1990-07-02 | 1991-07-09 | Hughes Aircraft Company | Dust cover and locking assembly for electrical or fiber optic connector |
US5280135A (en) * | 1991-08-09 | 1994-01-18 | Intermatic Incorporated | Outdoor electrical outlet cover |
US5350309A (en) * | 1992-03-24 | 1994-09-27 | Yazaki Corporation | Connector with a protective cover |
US5228584A (en) * | 1992-04-13 | 1993-07-20 | Hubbell Incorporated | Weatherproof electrical enclosure |
US5362924A (en) * | 1992-05-19 | 1994-11-08 | Correnti Giuseppe A | Protective cover for electrical wall sockets |
US5255807A (en) * | 1992-06-16 | 1993-10-26 | Eaton Corporation | Container |
US5621192A (en) * | 1993-06-21 | 1997-04-15 | Thomas & Betts Corporation | Housing for electrical outlets |
US5499734A (en) * | 1995-04-17 | 1996-03-19 | Tesco Controls, Inc. | Labyrinth barrier ventilated waterproff enclosure |
US5571023A (en) * | 1995-05-17 | 1996-11-05 | Hubbell Incorporated | Electrical connector housing with lid |
US5675126A (en) * | 1995-08-11 | 1997-10-07 | Halvorsen; Gary | Outlet cover |
US6226835B1 (en) | 1999-09-10 | 2001-05-08 | Newell Operating Company | Hinge |
US7402749B1 (en) | 1999-12-06 | 2008-07-22 | Shotey Marcus J | Weatherproof cover plate |
US7381895B1 (en) | 1999-12-06 | 2008-06-03 | Taymac Corporation | Weatherproof cover plate |
US7462778B1 (en) | 1999-12-06 | 2008-12-09 | Taymac Corporation | Horizontal and vertical mountable weatherproof cover plate |
US7538272B1 (en) | 1999-12-06 | 2009-05-26 | Taymac Corporation | Weatherproof cover plate |
US6894223B1 (en) * | 1999-12-06 | 2005-05-17 | Taymac Corporation | Horizontal and vertical mountable weatherproof cover plate |
US20060148290A1 (en) * | 2000-02-07 | 2006-07-06 | Communication And Power Industries, Inc., A Delaware Corporation | Input circuit for vacuum electron device RF amplifier |
US7384293B2 (en) | 2000-02-07 | 2008-06-10 | Communication And Power Industries, Inc. | Breach lock mechanism for seating vacuum electron device |
US7359206B2 (en) | 2000-02-07 | 2008-04-15 | Communications And Power Industries, Inc. | Radio frequency isolation system and cover assembly for vacuum electron device |
US7242135B2 (en) | 2000-02-07 | 2007-07-10 | Communication And Power Industries, Inc. | High voltage connection for vacuum electron device |
US20060154504A1 (en) * | 2000-02-07 | 2006-07-13 | Communication And Power Industries, Inc., A Delaware Corporation | Input circuit for vacuum electron device RF amplifier |
US20060148289A1 (en) * | 2000-02-07 | 2006-07-06 | Communication And Power Industries, Inc. | Input circuit for vacuum electron device RF amplifier |
US7029296B1 (en) * | 2000-02-07 | 2006-04-18 | Communication And Power Industires | Cover assembly for vacuum electron device |
US7476112B2 (en) * | 2000-08-09 | 2009-01-13 | O'connell Michelle Clare | Safety cover |
US8622759B2 (en) | 2000-08-09 | 2014-01-07 | Dormina Uk Limited | Electrical fitting and safety cover |
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