US3680433A - Semi-automatic shotgun having rotary and sliding breech block - Google Patents

Semi-automatic shotgun having rotary and sliding breech block Download PDF

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Publication number
US3680433A
US3680433A US864446A US3680433DA US3680433A US 3680433 A US3680433 A US 3680433A US 864446 A US864446 A US 864446A US 3680433D A US3680433D A US 3680433DA US 3680433 A US3680433 A US 3680433A
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US
United States
Prior art keywords
cartridge
bolt
carrier
magazine
receiver
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
US864446A
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English (en)
Inventor
James Tollinger
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.)
BINGHAMTON SAVINGS BANK
Original Assignee
Ithaca Gun Co Inc
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 Ithaca Gun Co Inc filed Critical Ithaca Gun Co Inc
Application granted granted Critical
Publication of US3680433A publication Critical patent/US3680433A/en
Assigned to OSWOI HOLDING LTD., reassignment OSWOI HOLDING LTD., ASSIGNMENT OF ASSIGNORS INTEREST. (SEE RECORD FOR DETAILS) Assignors: ITHACA GUN COMPANY, INC., DEBTOR AND DEBTOR-IN-POSSESSION
Assigned to OSWOI HOLDING LTD., reassignment OSWOI HOLDING LTD., ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: ITHACA GUN COMPANY, INC., DEBTOR AND DEBTOR-IN-POSSESSION
Assigned to ITHACA ACQUISITION CORP. reassignment ITHACA ACQUISITION CORP. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: OSWOI HOLDING LTD.,
Anticipated expiration legal-status Critical
Assigned to BINGHAMTON SAVINGS BANK reassignment BINGHAMTON SAVINGS BANK ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ITACA ACQUISTION CORPORATION
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A5/00—Mechanisms or systems operated by propellant charge energy for automatically opening the lock
    • F41A5/18—Mechanisms or systems operated by propellant charge energy for automatically opening the lock gas-operated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A9/00—Feeding or loading of ammunition; Magazines; Guiding means for the extracting of cartridges
    • F41A9/01—Feeding of unbelted ammunition
    • F41A9/06—Feeding of unbelted ammunition using cyclically moving conveyors, i.e. conveyors having ammunition pusher or carrier elements which are emptied or disengaged from the ammunition during the return stroke
    • F41A9/09—Movable ammunition carriers or loading trays, e.g. for feeding from magazines
    • F41A9/10—Movable ammunition carriers or loading trays, e.g. for feeding from magazines pivoting or swinging
    • F41A9/13—Movable ammunition carriers or loading trays, e.g. for feeding from magazines pivoting or swinging in a vertical plane
    • F41A9/16—Movable ammunition carriers or loading trays, e.g. for feeding from magazines pivoting or swinging in a vertical plane which is parallel to the barrel axis
    • F41A9/17—Movable ammunition carriers or loading trays, e.g. for feeding from magazines pivoting or swinging in a vertical plane which is parallel to the barrel axis mounted within a smallarm
    • F41A9/18—Movable ammunition carriers or loading trays, e.g. for feeding from magazines pivoting or swinging in a vertical plane which is parallel to the barrel axis mounted within a smallarm feeding from a tubular magazine under the barrel

Definitions

  • JAMES TOLLINGER mm Kw J is wNi
  • This invention relates to firearms and, more particularly, to a new and improved gas operated firearm characterized by simplicity of assembly and operation coupled with durability and precision of performance.
  • Another object of the invention is to provide an improved gas operated firearm characterized by simplicity of structure and operation, durability of components and improved reliability and accuracy.
  • a gas operated firearm having a cartridge magazine arranged for sequential release of individual cartridges in response to motion of an action assembly includes a piston supported for sliding motion, independent of the action assembly, in a cylinder which receives gases from the barrel of the firearm, the piston being movable thereby to impart actuating energy to the action assembly.
  • a carrier assembly positioned to receive cartridges from the magazine and transport them into chambering position in the receiver of the firearm includes a longitudinally slidable latch member arranged to be released upon engagement by a cartridge to initiate operation of the carrier assembly.
  • a single stop member, normally retaining the outermost cartridge in the magazine is released by operation of the action assembly, the succeeding cartridge being retained within the magazine by engagement with the outermost cartridge until the carrier assembly is released to transport that cartridge to the chambering position.
  • a breech bolt supported by the action assembly and formed with helically directed cam surfaces and axially spaced locking lugs is rotated by axial motion of the action assembly, causing the locking lugs to engage corresponding lugs in a rearwardly extending portion of barrel.
  • FIG. 1, comprising FIGS. 1A, 1B and 1C taken together, is a fragmentary view in longitudinal section taken in a vertical plane through a representative gas operated semi-automatic shotgun arranged according to the invention, illustrating the components of the shotgun in the full recoil position of the action assembly;
  • FIG. 2 is a fragmentary view in longitudinal section, taken along the line 2-2 of FIG. 1B and looking in the direction of the arrows, further illustrating the cartridge stop and carrier latch arrangements of the shotgun;
  • FIG. 3 is a fragmentary view in longitudinal section, similar to that of FIG. 1, showing the shotgun with the carrier assembly in the cartridge chambering position;
  • FIG. 4 is a fragmentary view in longitudinal section taken along a vertical plane, illustrating the positions of certain of the shotgun components when the gun is in battery condition;
  • FIG. 5 is a cross-sectional view, taken along the line 5-5 of FIG. 1B and looking in the direction of the arrows;
  • FIG. 6 is a cross-sectional view taken along the line 6-6 of FIG. 1B and looking in the direction of the arrows;
  • FIG. 7 is a cross-sectional view taken along the line 77 of FIG. 3 and looking in the direction of the arrows;
  • FIG. 8 is a fragmentary sectional view taken along the line 88 of FIG. 1B and illustrating a representative breech bolt structure arranged in accordance with the invention.
  • a semi-automatic shotgun comprises a barrel 10 having a rearward extension 11 projecting into a receiver 12 which is affixed in the usual manner to a gun stock 13.
  • a cartridge magazine 14, supported parallel to and below the gun barrel, contains a plurality of shells or cartridges l5 aligned endto-end for successive rearward movement into the receiver and upward transfer therein into chambering position by a vertically movable carrier 16.
  • An action slide assembly 17 includes a tubular forward portion 18 slidably surrounding the magazine 14, a pair of spaced parallel arms 19 and 20 extending rearwardly therefrom into the receiver 12 and a bolt support 211 connected to the arms 19 and 20 and extending upwardly therefrom to support a breech bolt 22.
  • the receiver also includes a buffer 28, composed of nylon or similar shock absorbing material, which is engaged by the bolt 22 to absorb the impact of the action assembly at the end of its rearward motion.
  • the rearward motion of the action assembly is effective to cock the hammer 29 of the gun in a conventional manner, the hammer being released to fire the gun by a trigger 30 which is pivotally supported in a trigger housing 31.
  • the carrier 16 which is supported for pivotal motion in the receiver by a pivot 32, carries a rotary dog 33 which is urged by a spring assembly 34 about its pivot 35 in the clockwise direction as viewed in FIG. 1.
  • the action slide moves rearwardly it rotates the dog 33 counterclockwise so that, when the carrier 16 is released in the manner described below, the spring 34 causes the dog to rotate clockwise, lowering the rearward end of the carrier and raising the forward end so as to transport a cartridge to chambering position.
  • the spring 34 urges the rear end of the carrier 16 upwardly, causing the forward end to be restored to the cartridge receiving position.
  • the action slide assembly 17 is driven rearwardly after each firing operation by a piston member which is movable within a gas cylinder independently of the action assembly.
  • a gas cylinder 36 affixed to the barrel 10, is closed at its forward end and communicates with the bore of the barrel through a gas intake port 37.
  • a piston 38 is slidably supported 'within the cylinder 35 and carries a nylon buffer member 39 for engagement with the front wall of the magazine housing 14 in its rearmost position shown in FIG. 1.
  • a gas exhaust port 40 is positioned in the cylinder 35 to be exposed with piston 38 in its rearward position.
  • the piston engages the forward end 41 of the action assembly when the gun is in the battery condition and the piston is at the forward end of the cylinder, thereby assuring prompt initiation of the rearward motion of the action upon firing of the gun.
  • the entire operating energy is imparted to the action slide assembly before the gas exhaust port 40 is exposed, thereby permitting accurate control of the energy imparted to the action slide assembly for its operation during the first portion of the piston stroke and assuring complete venting of the exhaust gases during the remainder of the stroke.
  • the energy imparted to the action slide assembly is made substantially independent of variations in gas pressure in the barrel during any particular cycle of operation or from one cycle of operation to the next so that the shotgun components are protected from excessive strain while sufficient energy for positive action is assured.
  • a magazine spring 43 urges a cartridge follower 44 in the rearward direction, causing the cartridges 15 to move rearwardly therein as the preceding cartridges are released in succession.
  • the rearmost cartridge in the magazine is held in position by engagement with an elongated cartridge stop member 45.
  • the cartridge stop is supported by a pivot 46 within a longitudinal recess 47 in the right hand wall of the receiver 12, the forward end of the stop member being biased outwardly by a coil spring 48.
  • the stop member is formed with an inclined ramp 49 terminating in a forwardly facing abutment 50 so that when the magazine is being loaded the rim of each cartridge can be moved past the stop by deflecting it outwardly away from the magazine axis, after which the cartridge is retained in the magazine by engagement of its rim with the abutment 50 as shown in FIGS. 3 and 4.
  • a cam member 51 projecting upwardly from the forward end of the stop member is shaped so as to be deflected outwardly into a recess 52 in the receiver by a downwardly projecting portion 53 of the right hand action bar 19, as illustrated in FIGS. 1 and 5, whenever the action assembly is in its rearmost position.
  • a cartridge guide 54 mounted in the opposite wall of the receiver 12, prevents the end of the rearmost cartridge in the magazine from being tilted away from the stop.
  • a carrier latch member 55 is supported for sliding motion parallel to the axis of the gun by two rcarwardly extending arms 56 received in corresponding grooves 57 in the trigger block 58.
  • a compression spring 59 urges the latch member forwardly within a central opening 60 in the carrier 16 and an aperture 61 in the latch member receives a rearward projection 62 extending from the center of the carrier a short distance into the opening 60. In this way, the carrier is normally prevented from moving upwardly in response to external pressure or the spring bias of the dog 33 when pivoted rcarwardly by the action assembly as shown in FIG. 1.
  • the latch member 55 has a forwardly directed projection 65 positioned to engage the rear surface of a cartridge 15 just below its center as illustrated in FIGS. 1 and 2.
  • the carrier latch member 55 will move rearwardly against the bias of the latch spring 59, releasing the projection 62 from the aperture 61 and permitting the carrier to be moved upwardly by the rotary bias of the spring 34 on the dog 33.
  • the sliding support arrangement for the carrier latch assures improved durability and provides structural simplicity as contrasted with other latch support mechanisms, such as pivotal mountings.
  • the carrier latch projects downwardly through the carrier opening 16 it may be released manually, permitting the carrier to be raised for loading of the magazine.
  • the lower portion 67 of the latch member may be knurled to facilitate engagement and operation by the thumb of the user.
  • the barrel extension 11 is approximately semi-circular in shape, commencing at an edge 68 adjacent to the top of a cartridge ejection opening 69 in the receiver and terminating at an edge 70 disposed below the barrel axis on the opposite side of the receiver.
  • the edge 70 of the barrel extension has three rectangular recesses 71 spaced in the axial direction by approximately equal segments 72 of the barrel extension.
  • the bolt 22 is formed in its lower surface with a generally longitudinal slot 74 having opposed helically directed surfaces 75 and 76 and arranged to receive the upwardly projecting bolt support 21 of the action assembly. Accordingly, as the action assembly moves forwardly from the position shown in FIGS. 1 and 6, retention of the bolt support 21 at the rear of the slot 7d prevents rotation of the bolt and permits the bolt projections 73 to move below the edge 7th of the barrel extension. When the bolt reaches its forwardmost position, the lugs 73 are aligned with the corresponding recesses 71 in the barrel extension, thereby permitting the bolt to rotate to the locked position shown in FIG.
  • the chambered cartridge is fired, causing gas to pass from the barrel through the port 37 into the cylinder 35 and drive the piston 38 and the action slide assembly engaged thereby in the rearward direction.
  • the action assembly continues rearwardly.
  • the action assembly reaches its rearmost position, as shown in FIGS. 1 and 2, the downwardly projecting portion 53 of the action bar 19 deflects the stop member 45 to release the rearmost cartridge from the magazine 14. That cartridge, driven rearwardly by the magazine spring 43, engages the carrier latch projection 65 to disengage the latch from the carrier l6.
  • the carrier When the latch 55 is released, the carrier is moved upwardly by rotary motion of the dog 33 under the urging of the spring 34$, which moves the components to the position shown in FiG. 3. This releases the action assembly and it commences its forward motion in response to the urging of the action of spring 23.
  • the action assembly moves the bolt support 21 forwardly, causing the bolt 22 to chamber the elevated cartridge and rotating the bolt into the locked position illustrated in FIG. 3.
  • the carrier 16 With the dog 33 released by forward motion of the bolt support 21, the carrier 16 is pivoted downwardly to the latched position by the spring 34.
  • the piston 38 is carried by the forward end 41 of the action assembly to its forward position in the cylinder 35 in readiness for the next cycle of operation.
  • a gas operated firearm having a barrel, a receiver, a magazine for supplying cartridges in succession to the receiver, carrier means within the receiver for transferring cartridges received from the magazine into chambering position, bolt means for chambering cartridges and closing the breech end of the barrel, and action slide means for driving the bolt means
  • the improved comprising piston means movable independently of the action slide means and responsive to firing of a cartridge to drive the action slide means rearwardly, cartridge stop means disposed in one wall of the receiver for motion toward and away from the magazine axis normally retaining cartridges in the magazine and responsive to rearward motion of the action slide means to release the rearmost cartridge into the receiver, carrier latch means normally retaining the carrier means in cartridge-receiving position and responsive to motion of a cartridge from the magazine onto the carrier means to release the carrier means for transfer of the cartridge to chambering position, and cam means associated with the action slide means and the bolt means responsive to forward motion of the action slide means to rotate the bolt means into locking engagement with the barrel, the bolt means having a plurality of longitudinally spaced
  • a gas operated firearm according to claim I including means forming an aperture in the carrier means and wherein the carrier latch means comprises a member extending through the aperture in the carrier means to provide a manual release portion manually operable by the user.
  • a gas operated firearm according to claim 1 wherein the latch means comprises a member extending generally perpendicularly to the carrier means and a projecting element extending from the member toward the magazine in position to be engaged by the end of a cartridge received on the carrier.
  • the carrier means comprises a member supported for pivotal motion and including a rotatable dog pivotally attached to the member adjacent to one end thereof, and a double-acting spring tending to rotate the dog about its pivot axis and to rotate the carrier member about its pivot axis.
  • a gas operated firearm including bolt support buffer means disposed within the bolt means between the bolt support means and the rearward end of the bolt means, and bolt buffer means disposed between the bolt means and the rearward end of the receiver.
  • a gas operated firearm including firing pin means supported for axial sliding motion in the bolt means and extending through the bolt support means to retain the bolt means releasably on the bolt support means.
  • a gas operated firearm according to claim 1 wherein the cartridge stop means comprises a member disposed within a recess formed in a wall of the receiver and capable of reciprocatory movement into and out of the recess.
  • a gas operated firearm wherein the member disposed within a recess in a wall of the receiver is biased toward the axis of the magazine by a spring.
  • a gas operated firearm according to claim Il further comprising guide means in the wall of the receiver opposite the cartridge stop means spaced from the stopping position of the cartridge stop means by less than the diameter of the cartridge to assure engagement of each cartridge with the stop means.

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  • General Engineering & Computer Science (AREA)
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US864446A 1969-10-07 1969-10-07 Semi-automatic shotgun having rotary and sliding breech block Expired - Lifetime US3680433A (en)

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US86444669A 1969-10-07 1969-10-07

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JP (1) JPS5035760B1 (ja)
CA (1) CA928115A (ja)
DE (1) DE2049308A1 (ja)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3756121A (en) * 1971-10-26 1973-09-04 Colt Ind Operating Corp Combination action spring guide and buffer for automatic pistol
US3955470A (en) * 1973-09-13 1976-05-11 Kruzell George R Bolt operating and locking mechanism for closed breech rocket gun
US4102242A (en) * 1975-08-04 1978-07-25 O. F. Mossberg & Sons, Inc. Autoloading gas-operated firearm
US6418833B1 (en) * 1999-10-01 2002-07-16 Jeffrey A. Hajjar Recoil spring tube assembly
US6564691B2 (en) * 2000-07-24 2003-05-20 Lawrence V. Butler Semi-automatic gas-operated shotgun
USD587766S1 (en) 2006-07-20 2009-03-03 Kee Action Sports I Llc Paintball field marker
RU2419054C1 (ru) * 2009-10-05 2011-05-20 Открытое акционерное общество "Завод им. В.А. Дегтярева" Крупнокалиберный пулемет
US20120204712A1 (en) * 2011-02-16 2012-08-16 Jeremy Hauck Dual action shotgun
US8733009B2 (en) 2012-01-06 2014-05-27 Ra Brands, L.L.C. Magazine cutoff
US8800422B2 (en) 2012-08-20 2014-08-12 Ra Brands, L.L.C. Bolt assembly for firearms
US9417019B2 (en) 2012-08-24 2016-08-16 Ra Brands, L.L.C. Fire control for auto-loading shotgun

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102709960B1 (ko) * 2023-11-20 2024-09-25 주식회사 션킴모터스 차량 전류 전압 안정기구조

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US785971A (en) * 1901-12-12 1905-03-28 Samuel N Mcclean Gas-actuated magazine-gun.
US858745A (en) * 1902-06-20 1907-07-02 Mcclean Arms And Ordnance Company One-pounder machine-gun.
US1099621A (en) * 1913-12-26 1914-06-09 Marlin Firearms Co Cut-off for magazine-guns.
US1430661A (en) * 1918-11-23 1922-10-03 Isaac N Lewis Firearm
US1481042A (en) * 1921-08-29 1924-01-15 Walther Fritz Automatic firearm
US1487800A (en) * 1916-06-06 1924-03-25 John D Pedersen Firearm
US2424264A (en) * 1942-10-27 1947-07-22 Gerald A Yorks Composite bolt structure for semiautomatic rifles
US2592858A (en) * 1949-10-28 1952-04-15 Olin Ind Inc Serrated carrier latch for firearms
US3142921A (en) * 1961-03-01 1964-08-04 Sturm Ruger & Co Cartridge lifter mechanism for semi-automatic gun
US3200710A (en) * 1963-12-27 1965-08-17 Remington Arms Co Inc Gas operating mechanism for autoloading firearm

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2909101A (en) * 1954-03-22 1959-10-20 High Standard Mfg Corp Gas operated firearm with gas piston surrounding a tubular magazine

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US785971A (en) * 1901-12-12 1905-03-28 Samuel N Mcclean Gas-actuated magazine-gun.
US858745A (en) * 1902-06-20 1907-07-02 Mcclean Arms And Ordnance Company One-pounder machine-gun.
US1099621A (en) * 1913-12-26 1914-06-09 Marlin Firearms Co Cut-off for magazine-guns.
US1487800A (en) * 1916-06-06 1924-03-25 John D Pedersen Firearm
US1430661A (en) * 1918-11-23 1922-10-03 Isaac N Lewis Firearm
US1481042A (en) * 1921-08-29 1924-01-15 Walther Fritz Automatic firearm
US2424264A (en) * 1942-10-27 1947-07-22 Gerald A Yorks Composite bolt structure for semiautomatic rifles
US2592858A (en) * 1949-10-28 1952-04-15 Olin Ind Inc Serrated carrier latch for firearms
US3142921A (en) * 1961-03-01 1964-08-04 Sturm Ruger & Co Cartridge lifter mechanism for semi-automatic gun
US3200710A (en) * 1963-12-27 1965-08-17 Remington Arms Co Inc Gas operating mechanism for autoloading firearm

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3756121A (en) * 1971-10-26 1973-09-04 Colt Ind Operating Corp Combination action spring guide and buffer for automatic pistol
US3955470A (en) * 1973-09-13 1976-05-11 Kruzell George R Bolt operating and locking mechanism for closed breech rocket gun
US4102242A (en) * 1975-08-04 1978-07-25 O. F. Mossberg & Sons, Inc. Autoloading gas-operated firearm
US6418833B1 (en) * 1999-10-01 2002-07-16 Jeffrey A. Hajjar Recoil spring tube assembly
US6564691B2 (en) * 2000-07-24 2003-05-20 Lawrence V. Butler Semi-automatic gas-operated shotgun
USD587766S1 (en) 2006-07-20 2009-03-03 Kee Action Sports I Llc Paintball field marker
RU2419054C1 (ru) * 2009-10-05 2011-05-20 Открытое акционерное общество "Завод им. В.А. Дегтярева" Крупнокалиберный пулемет
US20120204712A1 (en) * 2011-02-16 2012-08-16 Jeremy Hauck Dual action shotgun
US8733009B2 (en) 2012-01-06 2014-05-27 Ra Brands, L.L.C. Magazine cutoff
US8800422B2 (en) 2012-08-20 2014-08-12 Ra Brands, L.L.C. Bolt assembly for firearms
US9417019B2 (en) 2012-08-24 2016-08-16 Ra Brands, L.L.C. Fire control for auto-loading shotgun

Also Published As

Publication number Publication date
DE2049308A1 (de) 1971-04-22
CA928115A (en) 1973-06-12
JPS5035760B1 (ja) 1975-11-18

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AS Assignment

Owner name: OSWOI HOLDING LTD.,

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ITHACA GUN COMPANY, INC., DEBTOR AND DEBTOR-IN-POSSESSION;REEL/FRAME:004634/0881

Effective date: 19861016

Owner name: OSWOI HOLDING LTD.,

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ITHACA GUN COMPANY, INC., DEBTOR AND DEBTOR-IN-POSSESSION;REEL/FRAME:004633/0490

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Owner name: ITHACA ACQUISITION CORP.,STATELESS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:OSWOI HOLDING LTD.,;REEL/FRAME:004845/0122

Effective date: 19870306

Owner name: ITHACA ACQUISITION CORP.,

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Owner name: BINGHAMTON SAVINGS BANK, NEW YORK

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ITACA ACQUISTION CORPORATION;REEL/FRAME:006856/0839

Effective date: 19931014