US3805219A - Contact removal bushing for electrical connector - Google Patents
Contact removal bushing for electrical connector Download PDFInfo
- Publication number
- US3805219A US3805219A US00336306A US33630673A US3805219A US 3805219 A US3805219 A US 3805219A US 00336306 A US00336306 A US 00336306A US 33630673 A US33630673 A US 33630673A US 3805219 A US3805219 A US 3805219A
- Authority
- US
- United States
- Prior art keywords
- contact
- bushing
- shoulder
- recited
- bore
- 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
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
- H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
- H01R13/42—Securing in a demountable manner
- H01R13/426—Securing by a separate resilient retaining piece supported by base or case, e.g. collar or metal contact-retention clip
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49815—Disassembling
- Y10T29/49817—Disassembling with other than ancillary treating or assembling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49815—Disassembling
- Y10T29/49822—Disassembling by applying force
- Y10T29/49824—Disassembling by applying force to elastically deform work part or connector
Definitions
- This invention relates to electrical connectors of the type having contacts that are removably mounted within the insulating body of the insert. This invention is more particularly related to a removable contact and the contact release tool captively mounted therewith.
- US. Pat. No. 3,221,292 entitled Electrical Connector issued Nov. 30, 196 5 to G. J. Swanson et al. illustrates a multipin electrical connector of the type associated with this invention.
- One of the problems associated with multipin electrical connectors that have removable contacts is that the contact removal tool and the contact retention assembly associated with retaining the contact affects the contact density, i.e. limits the total number of contacts that may be placed within a given area. Further, contact removal tools that require an air space around the electrical contact decreases the amount of dielectric insulation between contacts and therefore lowers the breakover voltage, something which is most undesirable.
- a further important limitation on prior art contact removal tools is that the forward portion of the tool that is designed to release the contact retention mechanism is not larger than the opening in the insert that receives the tool and in all known instances the forward portion of the tool that releases the contact retaining mechanism was not radially expandable to an area greater than the opening in the contact insert that received the tool.
- the disadvantage with this limitation is that in some instances, the tool, (because of wear, poor design or because of mixed tolerances between the contact and tool) did not deflect the contact retention member to release the contact so that the contact could be withdrawn from the connector insert.
- SUMMARY OF THE INVENTION mounted on an electrical contact is further characterized by the fact that the end portion (46) that is within the bore of the insert (10) cooperates with an enlarged portion (32) of the contact (30) to open to a diameter larger than the entrance opening (13) that originally received the end portion (46) of the bushing (40).
- the invention may be described as an apparatus for releasing a removable electrical contact pin (30) from a bore in a connector insert (10), the pin (30) having a first enlarged section (31) forming a first shoulder (310) and a second enlarged section (32) adjacent said first shoulder'(3l the contact pin (30) secured in the bore by a radially deflectable and inwardly extending retention member (21) that engages the first shoulder (310) facing in the direction of said second enlarged section (32), the remaining portion (36) of the contact (30) that extends from said second enlarged portion (32) in the direction away from said first shoulder (310) is spaced from the surrounding walls of the bore, the second enlarged section (32) further including a tapered portion (320) which tapers radially inwardly in a direction away from the first shoulder (31); and a bushing (40) having a resiliently expandable end portion (46), the bushing is slideably mounted on the contact portion (36) that extends into the bore for axial movement of said expandable end portion (46)
- the inwardly extending retention member is radially deflected and disengaged from the contact first shoulder (31) so that the contact may be withdrawn from the bore-in the connector.
- the bushing (40) includes an axial slot (41) that extends the entire length of the bushing, making the bushing expandable.
- FIG. 1 is a cross-sectional view of the captivated tool DETAILED DESCRIPTION OF THE DRAWINGS
- FIG. 1 illustrates one embodiment of the invention used in combination with an electrical connector that includes a dielectric insert a contact retaining mechanism (20), an electrical contact (30), and a captivated removal bushing (40).
- the dielectric insert (10) includes a bore that terminates in an opening (13) at a first face (11) of the insert (10).
- a retention mechanism (20) Disposed within the passage of the insert (10) is a retention mechanism (20) which generally includes one or more radially deflectable fingers or members (21) that extend inwardly with respect to the axis of said insert bore.
- a retention mechanism may be found in U.S. Pat. No. 3,165,369 entitled Retention System for Electrical Contacts issued .Ian. 12, 1965 to J. W. Maston.
- the deflectable retention members (21) cooperate with a shoulder (310) on the contact (30) to prevent movement of said contact in the direction of said first face.
- the passage in the insert further includes means for stopping the movement of a contact (30) in the direction away from the first face (11) at a predetermined point.
- the stop means comprises an internal shoulder that engages a shoulder (311) of the contact (30) to prevent further movement of the contact (30) in a direction away from said first face (11).
- the electrical contact (30) includes a first enlarged portion (31), a second enlarged portion (32) and a remaining portion (36) that extends from said second enlarged portion (32) to one end of the contact.
- the enlarged portion (31) of said contact (30) includes a first shoulder (310) facing in the direction of the insert first face (11) and a second shoulder (311) that faces in the I direction away from the insert first face 11).
- the first shoulder (310) is adapted to engage the radially deflectable retention member (21) to prevent movement of the electrical contact (30) in the direction of the insert first face (11).
- the contact shoulder (311) is adapted to engage the insert shoulder (15) within the passage to prevent further movement of the contact in a direction away from the insert first face (11).
- the contact first shoulder (310) and second shoulder 311) captivates the electrical contact (30) in a predetermined position within the electrical connector insert (10).
- the second enlarged portion (32) of the contact (30) includes an inwardly tapered portion that is tapered inwardly with respect to the axis of the insert passage in the direction of the insert first face (11).
- the tapered portion (320) of the second enlarged section (32) of a contact (30) provides a ramp which is adapted to slideably engage the inside wall of the removal bushing (40).
- the removal bushing (40) is mounted around the end portion (36) of contact (30) and includes a radially extending flange (44) that facilitates the application of an axial force in either direction applied to the removal bushing (40).
- the forward portion (46) of the removal bushing (40) is generally comprised of a tubular member that is radially expandable.
- the removal bushing (40) is captivated on the contact (30) by the contact shoulder (38) and the enlarged portion (32) of the contact.
- An electrical conductor or a ferrule (60) for attaching an electrical conductor to the contact (30) is shown attached to the electrical contact (30).
- FIG. 2 illustrates the contact removal bushing (40) in a position that has radially deflected the contact retention member (21) to allow movement of the contact (30) in the direction of the insert face (11).
- the contact (30) is shown in a partially withdrawn position wherein the first enlarged portion (31) is now disposed in a position that does not permit the retention members (21) to engage shoulder (310) and prevent withdrawal of the contact (30) from the passage bore.
- FIG. 3 is a cross-sectional view of the contact and removal bushing taken along lines IIIIII of FIG. 2 which illustrates that the retention bushing (40) completely surrounds the electrical contact (30) except for an axial slot (41) which extends the entire length of the bushing (40). In thisembodiment the axial slot also extends through the radially extending flange (44).
- FIG. 4 is a cross-sectional diagram of the bushing (40) shown in FIG. 3 which illustrates that the axial slot (41) extends the entire length of the bushing (40).
- FIG. 5 illustrates an alternate embodiment of the bushing shown in FIG. 4.
- the axial slot (41) does not extend through the flange (44) at the end of the bushing (40).
- FIG. 6 illustrates another embodiment of the removal bushing shown in FIG. 4.
- the end portion opposite the flange (44) includes a raised portion (43) in addition to the axial slot (41)
- This type of bushing would more commonly be used in the assembly illustrated in FIG. 1 where there is more clearance between the removal bushing (40) and the inner wall of the insert bore.
- This embodiment would expand radially further than the type of bushing shown in FIG. 4 because of the raised portion (43) at the end of the bushing.
- the bushing (40) need not necessarily include the axial slot (41), relying on the raised end portion (43) to deflect the retention members (21) that engage the contact shoulder (310).
- the invention operates as follows: To remove a contact (30) from the insert (10) of an electrical connector, an axial force is applied to the flange (44) of removal bushing (40) in the direction of the contact shoulder (310). As can be seen in FIG. 2, the axial force moves the bushing (40) until it engages the tapered portion (320) of the enlarged section (32). The tapered portion (320) acts as a ramp for the inner wall of the bushing (40) to mount the enlarged portion (32) of the contact (30). In view of the fact that the bushing has an axial slot (FIG. 4) the bushing end portion that engages the enlarged portion (32) of the contact (30) expands radially.
- a connector having an insert, a removable electrical contact, and an apparatus for releasing said contact from a bore in the connector insert, said contact having a first enlarged section forming a first shoulder and a second enlarged section adjacent said first shoulder, said contact secured in said bore by a radially deflectable and inwardly extending retention member that engages said first shoulder facing in the direction of said second enlarged section while the remaining portion of the contact that extends from said second enlarged portion in the direction away from said first shoulder is spaced from the surrounding walls of the bore, said second enlarged section further including a tapered portion which tapers radially inwardly in a direction away from said first shoulder, said apparatus comprising:
- a bushing having a resiliently expandable end portion, said bushing slideably mounted on said contact portion that extends into said bore for axial movement of said expandable end portion into said bore so that when said bushing is forced over said second enlarged portion of said contact said bushing expands radially against said deflectable retention member whereby said inwardly extending retention member is radially deflected and disengaged from said contact first shoulder so that said contact may be withdrawn from said bore in said connector.
- said bushing includes an axial slot from at least one end to permit said slotted end portion to be resiliently expandable.
- stop means comprises an outwardly extending radial flange.
- a bushing mounted for axial movement on the portion of said contact having said second rounded shoulder, said bushing including a resiliently expandable end portion that engages said second .shoulder and expands radially to deflect said retention members and disengage them from contact with said first shoulder when said bushing is axially moved into engagement with said second shoulder, whereby said retaining members are disengaged from said first shoulder and said contact may be withdrawn'from said connector insert.
- said bushing includes an axial slot from at least one end to permit said one end portion to be radially expandable.
- bushing includes an axial slot from at least one end to permit said one end portion to be radially expandable.
- each of said retention members including at least one radially deflectable and inwardly extending retention finger adapted to engage a shoulder on a contact inserted therein, the improvement comprising:
- each of said contacts having a first enlarged section forming a first shoulder and a second enlarged section adjacent to and spaced from said first shoulder, said contact secured in said bore by said radially deflectable retention finger that extends inwardly to engage said first shoulder on said contact, said second enlarged section disposed adjacent said first shoulder in the direction of said opening at said first face, said second enlarged contact section further including an inwardly tapered portion that extends from said second enlarged section to said remaining portion of said contact in the direction of said opening in said insert first face;
- bushing having a resiliently expandable end portion, said bushing slideably mounted on said contact portion that extends through said opening at said first face so that axial movement of said bushing allows movement of said expandable end portion into said bore, whereby when an axial force is applied to said bushing in the direction of said first contact shoulder, said bushing is forced over said second enlarged portion of said contact to expand said bushing resiliently expandable end portion which then deflects said retention fingers out of engagement with said contact first shoulder thereby enabling withdrawal of said contact.
Landscapes
- Connector Housings Or Holding Contact Members (AREA)
Abstract
Description
Claims (16)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00336306A US3805219A (en) | 1973-02-27 | 1973-02-27 | Contact removal bushing for electrical connector |
FR7406574A FR2219538B1 (en) | 1973-02-27 | 1974-02-27 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00336306A US3805219A (en) | 1973-02-27 | 1973-02-27 | Contact removal bushing for electrical connector |
Publications (1)
Publication Number | Publication Date |
---|---|
US3805219A true US3805219A (en) | 1974-04-16 |
Family
ID=23315494
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00336306A Expired - Lifetime US3805219A (en) | 1973-02-27 | 1973-02-27 | Contact removal bushing for electrical connector |
Country Status (2)
Country | Link |
---|---|
US (1) | US3805219A (en) |
FR (1) | FR2219538B1 (en) |
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3871057A (en) * | 1973-05-25 | 1975-03-18 | Hughes Aircraft Co | Tool and method for insertion and removal of electrical connector interface seals |
FR2702888A1 (en) * | 1993-03-16 | 1994-09-23 | Framatome Connectors France | Electrical contact for a connector, and connector comprising it |
US6554645B1 (en) * | 1999-07-21 | 2003-04-29 | Amp Deutschland Gmbh | Primary terminal retention feature for connectors |
WO2009126968A1 (en) * | 2008-04-11 | 2009-10-15 | Nuvasive, Inc. | System and method for fastening objects together |
US20110004248A1 (en) * | 2007-02-26 | 2011-01-06 | Samy Abdou | Spinal stabilization systems and methods of use |
US8029322B1 (en) * | 2010-09-27 | 2011-10-04 | Tyco Electronics Corporation | Electrical contact assemblies and connectors including retention clips |
US8343190B1 (en) | 2008-03-26 | 2013-01-01 | Nuvasive, Inc. | Systems and methods for spinous process fixation |
US8882805B1 (en) | 2011-08-02 | 2014-11-11 | Lawrence Maccree | Spinal fixation system |
USD757943S1 (en) | 2011-07-14 | 2016-05-31 | Nuvasive, Inc. | Spinous process plate |
US10448977B1 (en) | 2012-03-31 | 2019-10-22 | Ali H. MESIWALA | Interspinous device and related methods |
US10543107B2 (en) | 2009-12-07 | 2020-01-28 | Samy Abdou | Devices and methods for minimally invasive spinal stabilization and instrumentation |
US10548740B1 (en) | 2016-10-25 | 2020-02-04 | Samy Abdou | Devices and methods for vertebral bone realignment |
US10575961B1 (en) | 2011-09-23 | 2020-03-03 | Samy Abdou | Spinal fixation devices and methods of use |
US10695105B2 (en) | 2012-08-28 | 2020-06-30 | Samy Abdou | Spinal fixation devices and methods of use |
US10857003B1 (en) | 2015-10-14 | 2020-12-08 | Samy Abdou | Devices and methods for vertebral stabilization |
US10918498B2 (en) | 2004-11-24 | 2021-02-16 | Samy Abdou | Devices and methods for inter-vertebral orthopedic device placement |
US10973648B1 (en) | 2016-10-25 | 2021-04-13 | Samy Abdou | Devices and methods for vertebral bone realignment |
US11006982B2 (en) | 2012-02-22 | 2021-05-18 | Samy Abdou | Spinous process fixation devices and methods of use |
US11173040B2 (en) | 2012-10-22 | 2021-11-16 | Cogent Spine, LLC | Devices and methods for spinal stabilization and instrumentation |
US11179248B2 (en) | 2018-10-02 | 2021-11-23 | Samy Abdou | Devices and methods for spinal implantation |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1515887A1 (en) * | 1965-07-30 | 1970-05-14 | Int Standard Electric Corp | Tool for inserting and removing connector contact elements |
-
1973
- 1973-02-27 US US00336306A patent/US3805219A/en not_active Expired - Lifetime
-
1974
- 1974-02-27 FR FR7406574A patent/FR2219538B1/fr not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1515887A1 (en) * | 1965-07-30 | 1970-05-14 | Int Standard Electric Corp | Tool for inserting and removing connector contact elements |
Cited By (39)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3871057A (en) * | 1973-05-25 | 1975-03-18 | Hughes Aircraft Co | Tool and method for insertion and removal of electrical connector interface seals |
FR2702888A1 (en) * | 1993-03-16 | 1994-09-23 | Framatome Connectors France | Electrical contact for a connector, and connector comprising it |
US6554645B1 (en) * | 1999-07-21 | 2003-04-29 | Amp Deutschland Gmbh | Primary terminal retention feature for connectors |
US10918498B2 (en) | 2004-11-24 | 2021-02-16 | Samy Abdou | Devices and methods for inter-vertebral orthopedic device placement |
US11992423B2 (en) | 2004-11-24 | 2024-05-28 | Samy Abdou | Devices and methods for inter-vertebral orthopedic device placement |
US11096799B2 (en) | 2004-11-24 | 2021-08-24 | Samy Abdou | Devices and methods for inter-vertebral orthopedic device placement |
US8801757B2 (en) | 2007-02-26 | 2014-08-12 | Nuvasive, Inc. | Spinal stabilization systems and methods of use |
US20110004248A1 (en) * | 2007-02-26 | 2011-01-06 | Samy Abdou | Spinal stabilization systems and methods of use |
US9662150B1 (en) | 2007-02-26 | 2017-05-30 | Nuvasive, Inc. | Spinal stabilization system and methods of use |
US10080590B2 (en) | 2007-02-26 | 2018-09-25 | Nuvasive, Inc. | Spinal stabilization system and methods of use |
US8343190B1 (en) | 2008-03-26 | 2013-01-01 | Nuvasive, Inc. | Systems and methods for spinous process fixation |
WO2009126968A1 (en) * | 2008-04-11 | 2009-10-15 | Nuvasive, Inc. | System and method for fastening objects together |
US10610380B2 (en) | 2009-12-07 | 2020-04-07 | Samy Abdou | Devices and methods for minimally invasive spinal stabilization and instrumentation |
US10945861B2 (en) | 2009-12-07 | 2021-03-16 | Samy Abdou | Devices and methods for minimally invasive spinal stabilization and instrumentation |
US10543107B2 (en) | 2009-12-07 | 2020-01-28 | Samy Abdou | Devices and methods for minimally invasive spinal stabilization and instrumentation |
US10857004B2 (en) | 2009-12-07 | 2020-12-08 | Samy Abdou | Devices and methods for minimally invasive spinal stabilization and instrumentation |
US11918486B2 (en) | 2009-12-07 | 2024-03-05 | Samy Abdou | Devices and methods for minimally invasive spinal stabilization and instrumentation |
US8029322B1 (en) * | 2010-09-27 | 2011-10-04 | Tyco Electronics Corporation | Electrical contact assemblies and connectors including retention clips |
USD757943S1 (en) | 2011-07-14 | 2016-05-31 | Nuvasive, Inc. | Spinous process plate |
US8882805B1 (en) | 2011-08-02 | 2014-11-11 | Lawrence Maccree | Spinal fixation system |
US10575961B1 (en) | 2011-09-23 | 2020-03-03 | Samy Abdou | Spinal fixation devices and methods of use |
US11324608B2 (en) | 2011-09-23 | 2022-05-10 | Samy Abdou | Spinal fixation devices and methods of use |
US11517449B2 (en) | 2011-09-23 | 2022-12-06 | Samy Abdou | Spinal fixation devices and methods of use |
US11839413B2 (en) | 2012-02-22 | 2023-12-12 | Samy Abdou | Spinous process fixation devices and methods of use |
US11006982B2 (en) | 2012-02-22 | 2021-05-18 | Samy Abdou | Spinous process fixation devices and methods of use |
US10448977B1 (en) | 2012-03-31 | 2019-10-22 | Ali H. MESIWALA | Interspinous device and related methods |
US10695105B2 (en) | 2012-08-28 | 2020-06-30 | Samy Abdou | Spinal fixation devices and methods of use |
US11559336B2 (en) | 2012-08-28 | 2023-01-24 | Samy Abdou | Spinal fixation devices and methods of use |
US11173040B2 (en) | 2012-10-22 | 2021-11-16 | Cogent Spine, LLC | Devices and methods for spinal stabilization and instrumentation |
US11918483B2 (en) | 2012-10-22 | 2024-03-05 | Cogent Spine Llc | Devices and methods for spinal stabilization and instrumentation |
US11246718B2 (en) | 2015-10-14 | 2022-02-15 | Samy Abdou | Devices and methods for vertebral stabilization |
US10857003B1 (en) | 2015-10-14 | 2020-12-08 | Samy Abdou | Devices and methods for vertebral stabilization |
US11259935B1 (en) | 2016-10-25 | 2022-03-01 | Samy Abdou | Devices and methods for vertebral bone realignment |
US11058548B1 (en) | 2016-10-25 | 2021-07-13 | Samy Abdou | Devices and methods for vertebral bone realignment |
US10973648B1 (en) | 2016-10-25 | 2021-04-13 | Samy Abdou | Devices and methods for vertebral bone realignment |
US11752008B1 (en) | 2016-10-25 | 2023-09-12 | Samy Abdou | Devices and methods for vertebral bone realignment |
US10744000B1 (en) | 2016-10-25 | 2020-08-18 | Samy Abdou | Devices and methods for vertebral bone realignment |
US10548740B1 (en) | 2016-10-25 | 2020-02-04 | Samy Abdou | Devices and methods for vertebral bone realignment |
US11179248B2 (en) | 2018-10-02 | 2021-11-23 | Samy Abdou | Devices and methods for spinal implantation |
Also Published As
Publication number | Publication date |
---|---|
FR2219538A1 (en) | 1974-09-20 |
FR2219538B1 (en) | 1976-12-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: CANADIAN IMPERIAL BANK OF COMMERCE, NEW YORK AGENC Free format text: SECURITY INTEREST;ASSIGNOR:AMPHENOL CORPORATION;REEL/FRAME:004879/0030 Effective date: 19870515 Owner name: ALLIED CORPORATION, A CORP. OF NY Free format text: MERGER;ASSIGNOR:BENDIX CORPORATION, THE,;REEL/FRAME:004765/0709 Effective date: 19850401 |
|
AS | Assignment |
Owner name: AMPHENOL CORPORATION, LISLE, ILLINOIS A CORP. OF D Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ALLIED CORPORATION, A CORP. OF NY;REEL/FRAME:004844/0850 Effective date: 19870602 Owner name: AMPHENOL CORPORATION, A CORP. OF DE, ILLINOIS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ALLIED CORPORATION, A CORP. OF NY;REEL/FRAME:004844/0850 Effective date: 19870602 |
|
AS | Assignment |
Owner name: AMPHENOL CORPORATION A CORP. OF DELAWARE Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:CANADIAN IMPERIAL BANK OF COMMERCE;REEL/FRAME:006147/0887 Effective date: 19911114 |