US3312928A - Explosion-proof connector - Google Patents

Explosion-proof connector Download PDF

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Publication number
US3312928A
US3312928A US384123A US38412364A US3312928A US 3312928 A US3312928 A US 3312928A US 384123 A US384123 A US 384123A US 38412364 A US38412364 A US 38412364A US 3312928 A US3312928 A US 3312928A
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US
United States
Prior art keywords
detent
shell
male
female
contact elements
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
Application number
US384123A
Other languages
English (en)
Inventor
Joseph A Nava
Heynneman Walter Ronald
Jewell Donald Kenneth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BRAND-REX WILLIMATIC CT
Pyle National Co
Original Assignee
Pyle National Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pyle National Co filed Critical Pyle National Co
Priority to US384123A priority Critical patent/US3312928A/en
Priority to GB47212/64A priority patent/GB1024239A/en
Priority to FR998522A priority patent/FR1417563A/fr
Priority to LU47578A priority patent/LU47578A1/xx
Priority to BE657911A priority patent/BE657911A/xx
Priority to NL6503159A priority patent/NL6503159A/xx
Priority to DE1540292A priority patent/DE1540292C3/de
Application granted granted Critical
Publication of US3312928A publication Critical patent/US3312928A/en
Anticipated expiration legal-status Critical
Assigned to BRAND-REX WILLIMATIC CT. reassignment BRAND-REX WILLIMATIC CT. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: AKZONA INCORPORATED
Assigned to MANUFACTURERS HANOVER COMMERIAL CORPORATION reassignment MANUFACTURERS HANOVER COMMERIAL CORPORATION SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BRAND-REX COMPANY
Assigned to BRINTEC SYSTEMS CORPORATION reassignment BRINTEC SYSTEMS CORPORATION RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: MANUFACTURER HANOVER COMMERCIAL CORPORATION
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/08—Arrangements to facilitate replacement of a switch, e.g. cartridge housing
    • H01H9/085—Arrangements to facilitate replacement of a switch, e.g. cartridge housing contact separation effected by removing contact carrying element
    • 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
    • H01R13/46—Bases; Cases
    • H01R13/53—Bases or cases for heavy duty; Bases or cases for high voltage with means for preventing corona or arcing
    • 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
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/621—Bolt, set screw or screw clamp
    • 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
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
    • H01R13/633—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for disengagement only
    • 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
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
    • H01R13/633—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for disengagement only
    • H01R13/635—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for disengagement only by mechanical pressure, e.g. spring force
    • 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
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/70—Structural association with built-in electrical component with built-in switch
    • H01R13/71—Contact members of coupling parts operating as switch, e.g. linear or rotational movement required after mechanical engagement of coupling part to establish electrical connection

Definitions

  • the connector of the present invention provides a multicontact assembly suitable for use in a high voltage, high current line, and is specifically designed for the purpose of minimizing the arcing time which can exist in making and breaking contact between the male contact members and the female contact members.
  • the present invention provides a quick connect and quick disconnect system, including a spring assisted detent means to cause rapid engagement and rapid disengagement of the connector elements.
  • An object of the invention is to provide an explosionproof connector particularly suitable for environments of high current and high voltage, and having means therein for minimizing the arcing time between the cont-acts.
  • Another object of the invention is to provide a quick connect, quick disconnect type coupling wherein the contacts progress through the arcing phase at a speed which limits the detrimental eifects of the are upon the contacts and insulation.
  • Still another object of the invention is to provide an explosion-proof connector for high voltage, high current circuits which can employ standard materials of construction without danger of catastrophic failure.
  • FIGURE 1 is a view of the connector partly in elevation and partly in cross section illustrating the connector elements in the disengaged position
  • FIGURE 2 is a schematic representation of the relative positions of the detent mechanism and the connector elements prior to engagement of the male and female contact members;
  • FIGURE 3 is a schematic view similar to FIGURE 2, but illustrating the relative position of the detent member and the connector elements when the connectors just begin engagement;
  • FIGURE 4 is a schematic view illustrating the position of the detent mechanism and the connector elements when the contact elements are fully engaged.
  • FIGURE 5 is a schematic view illustrating the relative positions of the detent mechanism and the connector elements at the end of disengagement.
  • reference numeral indicates generally an explosion-proof, multi-contact connector embodying the principles of the present invention. It should be realized, however, that the specific structural details of ICC the connector shown in FIGURE 1 are purely by way of example and that the inventive concepts of the present invention can be embodied at a wide variety of different physical forms.
  • the specific connector shown in FIG- URE 1 includes a more or less conventional male shell assembly 11 which is arranged to be received in telescoping engagement within a female shell assembly generally indicate dat reference numeral 12.
  • a clamp nut assembly 13 is threadedly engaged within the interior of the female shell assembly, and a flange 14 having a plurality of circumferentially spaced apertures 16 therein is provided for securing the female shell assembly 12 to a suitable supporting surface.
  • the female shell assembly 12 carries a plurality of female contact members 17, each of the contact members 17 including a socket 18.
  • the configuration of the female contact elements 17 is quite conventional, including an annular collar 19 which confines a central insulating disk 21 between itself and the socket portionof the connector.
  • the rear end of each of the female contact elements 17 may be potted in a suitable back cap 22 of an insulating material.
  • the male shell assembly 11 includes a plurality of male contact elements 23 which are arranged to be received in engagement with the socket 18 of the female contact members 17.
  • the male contact members 23 are provided with a pair of spaced annular shoulders 24 and 26 on opposite sides of a central insulating disk 27.
  • the rear end of each of the contact elements 23 is rigidly held within a back cap 28 composed of a suitable insulating material, and the forward end is confined within a front cap 29 also made of suitable insulating material.
  • the forward end of the male member 23 passes through a sleeve 31 which may be composed of a suitable insulating material or an arc extinguishing material.
  • a cable housing assembly 32 is threadedly engaged with the male shell assembly 11 by means of threads 33, and a resilient seal ring 34 is confined between the two elements in threaded engagement.
  • the detent assembly 36 includes a radially inwardly extending collar 37 which is confined between the cable housing assembly 32 and the male shell member 11 by threaded engagement between the two.
  • the detent assembly 36 includes a spring retainer ring 39 which is threadedly engaged at one end thereof, and a thrust washer 41 is seated against the inner face of the ring 39.
  • the detent proper consists of a detent carrier 42 from which protrudes a rollable detent member such as a garter spring 43.
  • the garter spring 43 is arranged to coopeate with abutment sufaces which are best illustrated in FIGURES 2 through 5 of the drawings.
  • the female plug member 12 is provided with oppositely inclined abutment surfaces 44 and 46 separated by a raised land portion 47.
  • the arrangement is such that the garter spring 43 will be seated against the abutment surface 44 until such time as sufiicient force is provided to roll the spring 43 over the abutment surface 44 and onto the land area 47.
  • a compression spring 51 operating between the detent mechanism 36 and a coupling sleeve generally indicated at numeral 52 in the drawings.
  • the coupling sleeve 52 carries a ring 53 at the rearward end thereof, the ring 53 being in threaded engagement with suitable internal threads provided in the coupling sleeve 52.
  • a thrust Washer 54 is seated against the forward end of the ring 53 and normally abuts one end of the coiled spring 51.
  • Another thrust washer 56 is positioned against a suitable shoulder in the retainer assembly 36 to engage 3 the forward end of the compression spring 51.
  • Another thrust Washer 57 is confined along the inner periphery of the coupling sleeve 52 by a snap ring 58 received within a suitable groove provided within the inner periphery of the coupling sleeve 52.
  • the male shell 11 Upon initial engagement of the male shell 11 with the female shell 12, the male shell 11 is moved inwardly until the spring 43 meets the abutment surface 44 at the end of the female shell 12. This position is illustrated in FIGURE 1. At this point, the male contacts 23 have not engaged the female contacts 17, and are spaced therefrom by a distance sufficiently large to prevent arcing. To effect further engagement, the coupling sleeve 52 is threaded on the outer periphery of the female shell member 12 by virtue of threads 59 which engage similarly formed threads 61 on the interior of the coupling sleeve 52. As the threading action continues, the compression spring 51 is loaded, to store up substantial energy in the spring 51.
  • the thrust washer 54 urges the end of the spring 51 into compression, while the forward end of the spring 51 is retained by the thrust washer 56.
  • sufiicient energy is stored in the spring 51 to overcome the reaction force between the garter spring 43 and the abutment surface 44.
  • the garter spring 43 rides up on the land 47 as illustrated in FIGURE 2 of the drawings.
  • the male plug member 11 is pushed further into the female plug member 12 to a point, as illustrated in FIGURE 3 of the drawings, where the male contact members 23 engage the female contact members 17. This action causes the contacts to progress through the arcing phase at a speed which limit-s the effect of the are on the contacts and the insulation.
  • Disengagement of the electrical contact elements is initiated by turning the coupling sleeve 52 in the opposite direction. This causes the garter spring 43 to move against the second abutment surface 46 and assume the position illustrated in dotted outline in FIGURE 4. At this point, the male contact members 23 are still engaged wit-h the female contact members 17. Then, compression of the spring 51 takes place in the opopsite direction, the thrust washer 57 hearing against one end of the spring, and the opposite end of the spring 51 being bottomed against the thrust washer 41. Eventually, sufficient force will be built up to roll the garter spring 43 onto the land portion 47, as illustrated in dotted outline in FIGURE 5.
  • the energy of the spring 51 is again released, causing the male contact elements 23 to the rapidly disengaged from the female contact members 17, and restoring the assembly to its original condition.
  • the period of disengagement is quite rapid, so that the contact elements go through the arcing phase very rapidly upon disengagement.
  • the connector of the present invention provides a quick make, quick break electrical connector which confines the arcing time to an extremely short interval, and so reduces the possibility of extended damage to contacts or insulation within the connector.
  • a connector for minimizing arcing time in a high voltage, high current line comprising a male shell carrying a plurality of male contact elements, a female shell carrying a plurality of female contact elements for engagement with said male contact elements, detent means movable with one of the aforementioned shells, abutment means on the other of said shells arranged to temporarily restrain said detent means until a predetermined force is applied to said detent means, a coupling sleeve in threaded engagement with said other shell, and spring means confined between said coupling sleeve and said detent means to urge said detent means against said abutment means with increasing pressures as said coupling sleeve is progressively threaded onto said shell until the force behind said detent means is sufficient to unseat said detent means from said abutment means, whereupon said male contact elements are rapidly engaged with said female contact elements.
  • a connector for minimizing arcing time in a high voltage, high current line comprising a male shell carrying a plurality of male contact elements, a female shell carrying a plurality of female contact elements for engagement with said male contact elements, a detent holder movable with said male shell, a rollable detent confined by said detent holder, abutment means on said female shell engaging said detent and arranged to restain said detent holder against relative sliding movement until a predetermined force is applied to said detent holder whereupon said detent rolls over said abutment means, a coupling sleeve mounted over said male shell and threadedly engaged with said female shell, and a spring acting between said coupling sleeve and said detent carrier to unseat said detent from against said abutment means when said sleeve has been sufficiently tightened onto said female shell and thereby release the energy of said spring means to cause rapid engagement of said male contact elements with said female contact elements.
  • a connector for minimizing arcing time in a high voltage, high current line comprising a male shell carrying a plurality of male contact elements, a female shell carrying a plurality of female contact elements for engagement with said male contact elements, a detent holder movable with said male shell, a rollable detent confined by said detent holder, abutment means on said female shell engaging said detent and arranged to restrain said detent holder against relative sliding movement until a predetermined force is applied to said detent holder, said abutment means including two oppositely inclined abutment surfaces separated by a flat land portion, a coupling sleeve mounted over said male shell and threadedly engaged with said female shell, and a spring acting between said coupling sleeve and said detent carrier to unseat the detent from against the first of said abutment surfaces when said coupling sleeve is threaded sufiiciently onto said female shell in one direction, and to unseat the detent from against the other of said a
  • the connector of claim 4 which also includes seal means compressed between said male shell and said female shell when said male contact elements and said female contact elements are in engaged condition.
  • a connector for minimizing arcing time in a high voltage, high current line comprising a tubular male shell element, a plurality of male contact elements carried by said male shell element, a tubular female shell element receiving said male shell element in telescoping engagement, a plurality of female contact elements carried by said female shell element and arranged to receive said male contact elements therein, a detent holder movable with said male shell element, a garter spring carried by said detent holder and partly extending therefrom, abutment means carried by said female shell element and arranged to restrain said garter spring against relative sliding movement thereto until a predetermined force is applied to said garter spring, a coupling sleeve threadedly engaging said female shell element, a compression spring having one end bottomed by said coupling sleeve and its other end biasing said garter spring against said abutment means with a force dependent on the amount of threaded engagement between said coupling sleeve and said female shell element, whereby when said coupling s
  • a separable connector comprising a plug shell, a receptacle shell having a detent land at its front end, a detent carrier having continuous biasing means carried thereby and a spring loaded coupling sleeve, said detent carrier being fixed to said plug shell for unison movement therewith, said continuous biasing means reacting operatively with said detent land on the front of said receptacle shell, said coupling sleeve operating axially independently of said plug shell and said receptacle shell to preload the detent carrier in either direction, mating contact members in said shells, said garter spring engaging said detent land before engagement of said contacts, said coupling sleeve operative to draw said shells axially together and storing spring energy until reaction force between said detent land and said continuous biasing means is overcome, whereupon the contacts are injected into engagement with one another at increased speed to reduce arcing.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
US384123A 1964-07-21 1964-07-21 Explosion-proof connector Expired - Lifetime US3312928A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US384123A US3312928A (en) 1964-07-21 1964-07-21 Explosion-proof connector
GB47212/64A GB1024239A (pt) 1964-07-21 1964-11-19
LU47578A LU47578A1 (pt) 1964-07-21 1964-12-14
FR998522A FR1417563A (fr) 1964-07-21 1964-12-14 Connecteur antidéflagrant
BE657911A BE657911A (pt) 1964-07-21 1965-01-05
NL6503159A NL6503159A (pt) 1964-07-21 1965-03-12
DE1540292A DE1540292C3 (de) 1964-07-21 1965-06-29 Explosionssichere, elektrische Vielfachsteckerkupplung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US384123A US3312928A (en) 1964-07-21 1964-07-21 Explosion-proof connector

Publications (1)

Publication Number Publication Date
US3312928A true US3312928A (en) 1967-04-04

Family

ID=23516137

Family Applications (1)

Application Number Title Priority Date Filing Date
US384123A Expired - Lifetime US3312928A (en) 1964-07-21 1964-07-21 Explosion-proof connector

Country Status (6)

Country Link
US (1) US3312928A (pt)
BE (1) BE657911A (pt)
DE (1) DE1540292C3 (pt)
GB (1) GB1024239A (pt)
LU (1) LU47578A1 (pt)
NL (1) NL6503159A (pt)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3750087A (en) * 1971-10-26 1973-07-31 Trw Inc Preloaded electrical connector
US3805379A (en) * 1971-10-26 1974-04-23 Trw Inc Method of assembling an electrical connector to effect a preloading thereof
US3808579A (en) * 1972-11-06 1974-04-30 Akzona Inc Explosion proof connector
US3848950A (en) * 1972-09-07 1974-11-19 G & H Technology Electrical connector
US3980373A (en) * 1972-09-07 1976-09-14 G & H Technology, Inc. Electrical connector
FR2417862A1 (fr) * 1978-02-20 1979-09-14 Souriau & Cie Connecteur electrique antideflagrant
US4176899A (en) * 1978-10-23 1979-12-04 The United States Of America As Represented By The Secretary Of The Navy Quick disconnect electrical connector having disassembly features for refurbishment
US4264115A (en) * 1978-03-01 1981-04-28 Bunker Ramo Corporation Interstage electrical connector
USRE31462E (en) * 1972-09-07 1983-12-13 Automation Industries, Inc. Electrical connector
US4550967A (en) * 1981-12-14 1985-11-05 Allied Corporation Electrical connector member
US4620760A (en) * 1984-01-12 1986-11-04 Plessey Overseas Limited Electrical connectors
US4850893A (en) * 1987-05-14 1989-07-25 Williams Robert A Test probe apparatus
US20080311774A1 (en) * 2005-07-12 2008-12-18 Cooper Crouse-Hinds Gmbh Explosion-Proof Connector
US20100304593A1 (en) * 2007-12-05 2010-12-02 Hummel Ag Connector impermeable to liquids
WO2020129646A1 (ja) * 2018-12-21 2020-06-25 株式会社ヨコオ 検査用治具支持具、支持具および検査用治具

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2466111A1 (fr) * 1979-09-21 1981-03-27 Marechal Sepm Perfectionnements aux prises de courant a contact en bout et rupture brusque

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2761111A (en) * 1953-02-16 1956-08-28 Amphenol Electronics Corp Breakaway connector

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2761111A (en) * 1953-02-16 1956-08-28 Amphenol Electronics Corp Breakaway connector

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3750087A (en) * 1971-10-26 1973-07-31 Trw Inc Preloaded electrical connector
US3805379A (en) * 1971-10-26 1974-04-23 Trw Inc Method of assembling an electrical connector to effect a preloading thereof
USRE31462E (en) * 1972-09-07 1983-12-13 Automation Industries, Inc. Electrical connector
US3848950A (en) * 1972-09-07 1974-11-19 G & H Technology Electrical connector
US3980373A (en) * 1972-09-07 1976-09-14 G & H Technology, Inc. Electrical connector
US3808579A (en) * 1972-11-06 1974-04-30 Akzona Inc Explosion proof connector
FR2417862A1 (fr) * 1978-02-20 1979-09-14 Souriau & Cie Connecteur electrique antideflagrant
US4264115A (en) * 1978-03-01 1981-04-28 Bunker Ramo Corporation Interstage electrical connector
US4176899A (en) * 1978-10-23 1979-12-04 The United States Of America As Represented By The Secretary Of The Navy Quick disconnect electrical connector having disassembly features for refurbishment
US4550967A (en) * 1981-12-14 1985-11-05 Allied Corporation Electrical connector member
US4620760A (en) * 1984-01-12 1986-11-04 Plessey Overseas Limited Electrical connectors
US4850893A (en) * 1987-05-14 1989-07-25 Williams Robert A Test probe apparatus
US20080311774A1 (en) * 2005-07-12 2008-12-18 Cooper Crouse-Hinds Gmbh Explosion-Proof Connector
US7794252B2 (en) * 2005-07-12 2010-09-14 Cooper Crouse-Hinds Gmbh Explosion-proof connector including a socket part and a plug part
US20100304593A1 (en) * 2007-12-05 2010-12-02 Hummel Ag Connector impermeable to liquids
US8172595B2 (en) * 2007-12-05 2012-05-08 Hummel Ag Connector impermeable to liquids
WO2020129646A1 (ja) * 2018-12-21 2020-06-25 株式会社ヨコオ 検査用治具支持具、支持具および検査用治具
CN113015913A (zh) * 2018-12-21 2021-06-22 株式会社友华 检查用夹具支承件、支承件以及检查用夹具

Also Published As

Publication number Publication date
LU47578A1 (pt) 1965-02-15
DE1540292A1 (de) 1969-12-11
DE1540292C3 (de) 1974-04-04
GB1024239A (pt) 1966-03-30
DE1540292B2 (de) 1973-08-23
BE657911A (pt) 1965-07-05
NL6503159A (pt) 1966-01-24

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AS Assignment

Owner name: BRAND-REX WILLIMATIC CT. A CORP OF DE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:AKZONA INCORPORATED;REEL/FRAME:004283/0913

Effective date: 19831130

AS Assignment

Owner name: MANUFACTURERS HANOVER COMMERIAL CORPORATION, A NY

Free format text: SECURITY INTEREST;ASSIGNOR:BRAND-REX COMPANY;REEL/FRAME:004289/0418

Effective date: 19831121

Owner name: MANUFACTURERS HANOVER COMMERIAL CORPORATION

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Effective date: 19831121

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Owner name: BRINTEC SYSTEMS CORPORATION, A CORP OF DE.

Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:MANUFACTURER HANOVER COMMERCIAL CORPORATION;REEL/FRAME:004689/0462

Effective date: 19860411