US3896717A - Roof truss machine - Google Patents
Roof truss machine Download PDFInfo
- Publication number
- US3896717A US3896717A US387735A US38773573A US3896717A US 3896717 A US3896717 A US 3896717A US 387735 A US387735 A US 387735A US 38773573 A US38773573 A US 38773573A US 3896717 A US3896717 A US 3896717A
- Authority
- US
- United States
- Prior art keywords
- truss
- tables
- legs
- lower frame
- pair
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27F—DOVETAILED WORK; TENONS; SLOTTING MACHINES FOR WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES
- B27F7/00—Nailing or stapling; Nailed or stapled work
- B27F7/15—Machines for driving in nail- plates and spiked fittings
- B27F7/155—Machines for driving in nail- plates and spiked fittings for nail plates
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S100/00—Presses
- Y10S100/918—Bolster and die
Definitions
- each table is cantilevered from supporting legs on the side innermost of the truss, so that the press can freely move in [56] References cued a straight path along the line of tables, parallel with UNITED STATES PATENTS the truss sides, without having to be swung in and out 3,255,943 6/l966 Sanford lO0/DIG. 13 between the legs of each table.
- a pair of transfer de- 3,358,589 12/1967 Hentzschel 100/100 vices are positioned among the tables to lift the assem- 3,487,430 12/1969 Schmltt 100/231 bled truss f the tables and hif i laterally to 3 3,709,762 l/l973 Chandler loo/DIG. 13 point where it can be stacked for removal from the 3,742,569 7/1973 Moehlenpah.... l00/DlG.
- Spiked connector plates are manually positioned above and below each abutting joint, and a self-propelled gantrysupported C-clamp press is guided around the series of pedestals to imbed each pair of connector plates to thereby fasten the individual wood members into a rigid truss assembly.
- FIG. 1 is a perspective view of the truss-making machine of this invention, showing a truss in place on the supporting tables, but showing the lifting and transferring devices out of their normal position, for clarity of illustration.
- FIG. 2 is a fragmentary perspective view of a detail of one of the supporting table tops showing the truss members in phantom.
- FIG. 3 is a side elevation of one of the improved supporting tables of this invention.
- FIG. 4 is a section throughout the lower portion of the supporting table of FIG. 3, viewed in the direction of arrows 44 thereof.
- FIG. 5 is a simplified plan view of a completed truss, showing a preferred position of the lifting and transferring apparatus beneath the truss, but eliminating illustration of all of the supporting tables.
- FIG. 6 is a side view of one of the lifting and transferring devices of this invention.
- FIG. 7 is an end view of the device of FIG. 6.
- roof truss 10 is shown in position on the truss making machine in FIG. 1 of the drawings.
- Roof truss 10 comprises a pair of inclined rafters 12, a lower horizontal beam 14, a series of three vertical bracing members l6, l8 and 20, and a pair of diagonal braces 22 and 24.
- a variety of truss configurations can be assembled on the machine of the present invention, the particular pattern illustrated and described herein being merely exemplary of how the machine is used on a typical arrangement.
- These individual wooden members are assembled together by pairs of opposed conventional stamped and pierced metal connector plates, which have pierced-out barbs which bite into the wood when the upper. and lower connector plates are squeezed toward each other during the assembly process.
- the connector plates are imbedded or pressed into the wood by a C-clamp type press 28 which is supported by an overhead gantry 30 which slides along longitudinal gantry tracks 32.
- the press is preferably self-propelled to traverse from left to right in FIG. 1 along the supporting beam of gantry 30, while the entire gantry itself similarly is power driven to move longitudinally along tracks32.
- These motions are typically controlled by an operator who walks with the press as it makes its circuit around the horizontally disposed truss.
- the truss is supported on a series of pedestals or tables 34 which are adjustably positioned along a pair of longitudinal tracks 36. Interspersed between tables 34 are a pair of lifting and transfer devices 38. It will be understood that thesetransfer devices must be located in the spaces between the supporting tables, such as is shown in the simplified plan view of FIG. 5. In FIG. 1, however, they are shown displaced from their normal position merely for ease of illustration.
- each of the pedestals or tables 34 is slidably positioned in the longitudinal direction along tracks 36.
- each table has an inverted channel 40 provided with a locking bolt assembly 42 for clamping it at the desired position along the U-shaped track 36.
- Each table also has a pair of lower frame members 44, in the form of U-shaped tracks, supported at one end by channel 40 and at the other end by castors 46.
- the tables can be transversely adjusted in their position by means of lower frame box section members 48 which are slidably positioned and superimposed upon lower frame member 44, and provided with a clamping or locking bolt assembly 50, best shown in FIG. 4.
- each table can be positioned as required to place it beneath a joint of the particular size and shape truss being assembled.
- a pair of legs 52 support the upper portion of each table, which is in the form of a three-sided peripheral frame of box section members 54 having inwardly projecting angle irons 56 upon which freely rests panel 58, best shown in FIG. 2.
- the side of the table facing outward away from the truss does not have a member 54, so as to permit free entry of the press into position at the table.
- panel 58 supports the lower connector plate 26, and can be freely lifted upwardly from angle irons 56 by the upward compression stroke of the lower press member.
- An end stop 60 assures that panel 58 will not slide out of its position from its three-sided support frame.
- a plate 62 which carries the whole upper portion of the table, is rotatably mounted on a lower fixed plate 64 by means of a pivot bolt 66, so that the entire upper portion of the table, including its legs, can rotate relative to the lower frame structure.
- This feature is frequently required for the table positioned beneath the upper end of the outermost vertical bracing members 16, especially on low pitch trusses where the length of member 16 is so short as to place such table particularly close to the adjacent tables.
- each table is provided with a series of clamps 68, which may be of a conventional toggle design, and which are slidably mounted in clamp channels 70 in the table top. These clamps function to lock the pre-cut individual truss members in place on the tables during the assembly operation.
- the lifting and transfer devices 38 generally comprise a rectangular frame 72 to which is pivotally mounted a parallelogram linkage generally shown at 74.
- the parallelogram linkage comprises lower beam 76, end legs 78 and upper rail 80. End legs 78 are pivotally supported on axles 82, 84 carried by frame 72.
- the parallelogram linkage 74 is selectively actuated by a hydraulic or pneumatic lift cylinder 86 secured to frame 72 and having its rod connected at 88 to lower beam 76 of the linkage.
- lift cylinder 86 When lift cylinder 86 is actuated to its illustrated extended position, lower beam 76 moves toward the left (as shown in FIG. 6), and end legs 78 pivot clockwise about axles 82 to lift upper rail 80 vertically upward and to the right slightly. Similarly, retraction of the rod of lift cylinder 86 rotates legs 78 counterclockwise, returning upper rail 80 to its lower position.
- a transfer beam 90 of generally box-section configuration is slidably supported on rollers 92 mounted on upper rail 80.
- actuation of a transfer cylinder 94 supported on frame 72 functions to extend or telescope transfer beam 90 to the right (as shown in FIG. 6), relative to upper rail 80, through the connection at 96.
- the transfer beam 90 itself is provided with a series of rol lers 98 which permit truss to be readily rolled along the upper surface of the transfer beam.
- OPERATION Assembly of a truss begins with the proper positioning of support tables 34 along longitudinal tracks 36 and transverse tracks 44. Once positioned, the tables can be left in place for a production run of trusses of the same design.
- the pre-cut truss members are laid in place on tables 34 and secured by clamps 68.
- An upper and lower connector plate 26 is then positioned at each abutting joint of the truss members.
- the upper connector plate 26 is laid across the top of the joint, with the spikes facing downwardly.
- the lower connector plate is laid on movable panel 58 of the table, with the spikes pointing upwardly toward the truss joint.
- the truss members actually rest upon the box section portions 54 of the table, the upper surface of which is spaced sufficiently above the upper face of panel 58 to permit lower connector plate 26 to be slid into place beneath the joint of the truss.
- each table is cantilevered from only two legs 52, which legs are on the side of the table innermost of the truss.
- a significant advantage results from this unique design.
- the C-shaped press 28 moves around the outer periphery of truss 10, it can freely move in a straight path parallel and in close proximity to the truss, since there are no outwardly spaced vertical tablesupporting legs to interfere with its free passage.
- the press need not move inwardly and outwardly relative to the periphery of the truss as it is positioned for actuation at each table. This is a substantial time-saving feature of this table configuration.
- the press is actuated, and the lower portion of the press is hydraulically or pneumatically raised to engage the lower face of table top panel 58, momentarily lifting panel 58, and the lower connector plate 26 which it supports, upwardly and thereby simultaneously imbedding the upper and lower connector plates into the truss joint.
- the free movement of panel 58 means that the truss members can remain substantially stationary on the table during the imbedding operation, as the lower plate 26 is lifted upwardly with panel 58, thus substantially reducing the tendency to disturb the position of unconnected joints at adjacent tables.
- panel 58 drops back down onto angle irons 56.
- the lifting and transfer devices 38 are actuated to lift the completed truss 10 upwardly from the individual support tables 34 and to transfer the truss laterally away from the table area. It will be understood that the normal height of the rollers 98 of transfer beam is below the top of the tables when lift cylinder 86 is in its retracted condition, so that transfer devices 38 only engage the underside of the completed truss when lift cylinder 86 is extended.
- a typical installation of the truss making machines of the present invention comprises at least two longitudinally spaced machines or jig systems aligned end to end, to be serviced by a single gantry 30 as described above.
- the gantry operator When the gantry operator has completed one truss, he transfer the gantry along tracks 32 to the adjacent machine, thus permitting the assembled truss to be transferred laterally by simultaneous actuation of the two transfer devices 38. This eliminates the above-described problems associated with the assembly team walking the truss through the table area.
- This invention may be further developed within the.
- a machine for assembling wooden trusses from individual abutting structural members joined together by spiked connector plates wherein the machine is of the type having a plurality of support tables adjustably positioned along a floor track means and arranged to support the horizontally arranged structural members at their points of abutment, and further having a wheeled gantry supporting a C-clamp type press for movement along the outer periphery of the truss to join the truss members together by embedding connector plates into the members at each of the table-supported abutment points, the improvement in said support tables comprising;
- a lower frame adapted to slidably engage the floor track means for adjustable positioning therealong; said lower frame including a downwardly opening channel slidably mounted on said floor track means for adjustment of said support table in a first direction, a pair of spaced apart upwardly opening U- shaped lower frame members each having a first end attached to said channel, and a pair of parallel box frames, each slidably superimposed on one lower frame member for adjustment of said support table transversely of said first direction;
- an upper support surface adapted to support individual truss members at their point of abutment; said upper support surface including a pair of horizontal legs each parallel to a box frame and interconnected at one end by a third horizontal leg parallel to said downwardly opening channel, said support surface being open on one side;
- said upper support surface being rigidly secured to said lower frame with the space immediately beneath the one open side of said upper support surface being otherwise completely open and free of any obstruction, whereby the, C-clamp type press can freely move from table to table in a straight path along and parallel to the outer periphery of the truss, without having to move perpendicularly to the sides of the truss to clear tablesupporting legs.
Abstract
Description
Claims (2)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US387735A US3896717A (en) | 1973-08-13 | 1973-08-13 | Roof truss machine |
JP744451A JPS5716882B2 (en) | 1973-08-13 | 1973-12-28 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US387735A US3896717A (en) | 1973-08-13 | 1973-08-13 | Roof truss machine |
Publications (1)
Publication Number | Publication Date |
---|---|
US3896717A true US3896717A (en) | 1975-07-29 |
Family
ID=23531168
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US387735A Expired - Lifetime US3896717A (en) | 1973-08-13 | 1973-08-13 | Roof truss machine |
Country Status (2)
Country | Link |
---|---|
US (1) | US3896717A (en) |
JP (1) | JPS5716882B2 (en) |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4005520A (en) * | 1976-03-09 | 1977-02-01 | Sanford Arthur C | Frame structure fabricating system |
US4111114A (en) * | 1977-03-28 | 1978-09-05 | The Panel Clip Co. | Machine for applying nail plates for truss assembly |
US4174061A (en) * | 1978-06-06 | 1979-11-13 | Mcdonald William D | Portable apparatus for fabricating wooden trusses |
FR2511062A1 (en) * | 1981-08-07 | 1983-02-11 | Sanford France | Industrial frame fabrication procedure - has forced connectors with first step connector pressing in single pass |
US5020714A (en) * | 1989-04-12 | 1991-06-04 | The Boeing Company | Method and press apparatus for manufacturing |
US6170163B1 (en) | 1997-02-11 | 2001-01-09 | Virtek Vision Corporation | Method of assembling components of an assembly using a laser image system |
US6560858B1 (en) | 2000-10-20 | 2003-05-13 | Alpine Engineered Products, Inc. | Truss table apparatus with automatic truss movement assembly and method |
US20040181936A1 (en) * | 2003-03-20 | 2004-09-23 | Mitek Holdings, Inc. | Press for assembling structures |
US20040207139A1 (en) * | 2003-02-18 | 2004-10-21 | Fredrickson Clyde R. | Automatic truss jig setting system |
US6817090B1 (en) * | 1998-10-13 | 2004-11-16 | Mcadoo David L. | Truss fabrication method and apparatus |
US20080179802A1 (en) * | 2007-01-29 | 2008-07-31 | Mcadoo David L | Truss assembly table with automatic jigging |
US20090235613A1 (en) * | 2006-07-06 | 2009-09-24 | Lars Englundh | Device for Connecting a Framework of Length of Timber |
US20090289403A1 (en) * | 2008-05-23 | 2009-11-26 | Nucor Corporation | Rigging table for assembling trusses and method of use thereof |
FR2957290A1 (en) * | 2010-03-10 | 2011-09-16 | Claude Chantin Sa Const Metalliques | Machine for assembling framework panels i.e. gable top forming panels, to construct wooden framed buildings, has support device equipped with support element to support components of framework panels in site between longitudinal beams |
CN104120889A (en) * | 2014-07-18 | 2014-10-29 | 中冶天工上海十三冶建设有限公司 | Pipe truss structure integral lifting device |
US9731405B2 (en) | 2003-02-18 | 2017-08-15 | Columbia Insurance Company | Automatic truss jig setting system |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS598171U (en) * | 1982-07-09 | 1984-01-19 | 株式会社アドバンテスト | Terminal connection device for electronic component testing equipment |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3255943A (en) * | 1964-04-02 | 1966-06-14 | Sanford Ind Inc | Apparatus for fabricating wooden structures |
US3358589A (en) * | 1965-12-20 | 1967-12-19 | Timber Engineering Co | Wood roof truss fabrication apparatus |
US3487430A (en) * | 1968-04-22 | 1969-12-30 | Jack N Schmitt | Roof truss machine |
US3709762A (en) * | 1970-09-01 | 1973-01-09 | B Chandler | Press for a wooden truss |
US3742569A (en) * | 1971-01-13 | 1973-07-03 | Moehlenpah Walter George | Assembling and securing apparatus for fabricating wood structures |
US3824919A (en) * | 1972-11-10 | 1974-07-23 | Moehlenpah Walter George | Method of and apparatus for fabricating wood structures |
-
1973
- 1973-08-13 US US387735A patent/US3896717A/en not_active Expired - Lifetime
- 1973-12-28 JP JP744451A patent/JPS5716882B2/ja not_active Expired
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3255943A (en) * | 1964-04-02 | 1966-06-14 | Sanford Ind Inc | Apparatus for fabricating wooden structures |
US3358589A (en) * | 1965-12-20 | 1967-12-19 | Timber Engineering Co | Wood roof truss fabrication apparatus |
US3487430A (en) * | 1968-04-22 | 1969-12-30 | Jack N Schmitt | Roof truss machine |
US3709762A (en) * | 1970-09-01 | 1973-01-09 | B Chandler | Press for a wooden truss |
US3742569A (en) * | 1971-01-13 | 1973-07-03 | Moehlenpah Walter George | Assembling and securing apparatus for fabricating wood structures |
US3824919A (en) * | 1972-11-10 | 1974-07-23 | Moehlenpah Walter George | Method of and apparatus for fabricating wood structures |
Cited By (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4005520A (en) * | 1976-03-09 | 1977-02-01 | Sanford Arthur C | Frame structure fabricating system |
US4111114A (en) * | 1977-03-28 | 1978-09-05 | The Panel Clip Co. | Machine for applying nail plates for truss assembly |
US4174061A (en) * | 1978-06-06 | 1979-11-13 | Mcdonald William D | Portable apparatus for fabricating wooden trusses |
FR2511062A1 (en) * | 1981-08-07 | 1983-02-11 | Sanford France | Industrial frame fabrication procedure - has forced connectors with first step connector pressing in single pass |
US5020714A (en) * | 1989-04-12 | 1991-06-04 | The Boeing Company | Method and press apparatus for manufacturing |
US6170163B1 (en) | 1997-02-11 | 2001-01-09 | Virtek Vision Corporation | Method of assembling components of an assembly using a laser image system |
US20050055955A1 (en) * | 1998-10-13 | 2005-03-17 | Mcadoo David L. | Truss fabrication method and apparatus |
US7316068B2 (en) | 1998-10-13 | 2008-01-08 | Illinois Tool Works, Inc. | Truss fabrication apparatus |
US6817090B1 (en) * | 1998-10-13 | 2004-11-16 | Mcadoo David L. | Truss fabrication method and apparatus |
US6560858B1 (en) | 2000-10-20 | 2003-05-13 | Alpine Engineered Products, Inc. | Truss table apparatus with automatic truss movement assembly and method |
US20040207139A1 (en) * | 2003-02-18 | 2004-10-21 | Fredrickson Clyde R. | Automatic truss jig setting system |
US7913986B2 (en) | 2003-02-18 | 2011-03-29 | Fredrickson Clyde R | Automatic truss jig setting system |
US9821440B1 (en) | 2003-02-18 | 2017-11-21 | Columbia Insurance Company | Automatic truss jig setting system |
US20050212192A1 (en) * | 2003-02-18 | 2005-09-29 | Fredrickson Clyde R | Automatic truss jig setting system |
US20060061028A1 (en) * | 2003-02-18 | 2006-03-23 | Fredrickson Clyde R | Automatic truss jig setting system |
US7093829B2 (en) | 2003-02-18 | 2006-08-22 | Truss Industry Production Systems | Automatic truss jig setting system |
US6899324B2 (en) | 2003-02-18 | 2005-05-31 | Clyde R. Fredrickson | Automatic truss jig setting system |
US9731405B2 (en) | 2003-02-18 | 2017-08-15 | Columbia Insurance Company | Automatic truss jig setting system |
US20080251983A1 (en) * | 2003-02-18 | 2008-10-16 | Fredrickson Clyde R | Automatic truss jig setting system |
US8807548B2 (en) | 2003-02-18 | 2014-08-19 | Columbia Insurance Company | Automatic truss jig setting system |
US8292278B2 (en) | 2003-02-18 | 2012-10-23 | Truss Industry Production Systems, Inc. | Automatic truss jig setting system |
US20040181936A1 (en) * | 2003-03-20 | 2004-09-23 | Mitek Holdings, Inc. | Press for assembling structures |
US6907820B2 (en) | 2003-03-20 | 2005-06-21 | Mitek Holdings, Inc. | Press for assembling structures |
US8359737B2 (en) * | 2006-07-06 | 2013-01-29 | Nordiska Truss Ab | Device for connecting a framework of length of timber |
US20090235613A1 (en) * | 2006-07-06 | 2009-09-24 | Lars Englundh | Device for Connecting a Framework of Length of Timber |
US8366087B2 (en) | 2007-01-29 | 2013-02-05 | Illinois Tool Works, Inc. | Truss assembly table with automatic jigging |
US20080179802A1 (en) * | 2007-01-29 | 2008-07-31 | Mcadoo David L | Truss assembly table with automatic jigging |
US8141252B2 (en) | 2008-05-23 | 2012-03-27 | Nucor Corporation | Rigging table for assembling trusses and method of use thereof |
US20090289403A1 (en) * | 2008-05-23 | 2009-11-26 | Nucor Corporation | Rigging table for assembling trusses and method of use thereof |
US9387558B2 (en) | 2008-05-23 | 2016-07-12 | Nucor Corporation | Rigging table for assembling trusses and method of use thereof |
US10589390B2 (en) | 2008-05-23 | 2020-03-17 | Nucor Corporation | Rigging table for assembling trusses and method of use thereof |
FR2957290A1 (en) * | 2010-03-10 | 2011-09-16 | Claude Chantin Sa Const Metalliques | Machine for assembling framework panels i.e. gable top forming panels, to construct wooden framed buildings, has support device equipped with support element to support components of framework panels in site between longitudinal beams |
CN104120889A (en) * | 2014-07-18 | 2014-10-29 | 中冶天工上海十三冶建设有限公司 | Pipe truss structure integral lifting device |
CN104120889B (en) * | 2014-07-18 | 2016-06-01 | 中冶天工上海十三冶建设有限公司 | Tube truss structure integral lifting apparatus |
Also Published As
Publication number | Publication date |
---|---|
JPS5716882B2 (en) | 1982-04-07 |
JPS5038932A (en) | 1975-04-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: HOUSEHOLD COMMERCIAL FINANCIAL SERVICES, INC., 270 Free format text: SECURITY INTEREST;ASSIGNOR:TRUSWAL SYSTEMS CORPORATION;REEL/FRAME:004876/0492 |
|
AS | Assignment |
Owner name: ITW TRUSWAL CORPORATION, 8925 STERLING STREET, IRV Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:TRUSWAL SYSTEMS CORPORATION;REEL/FRAME:004860/0503 Effective date: 19880217 Owner name: TRUSWAL SYSTEMS CORPORATION, 8925 STERLING STREET, Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ITW TRUSWAL CORPORATION;REEL/FRAME:004860/0507 Effective date: 19880217 Owner name: ITW TRUSWAL CORPORATION, A CORP. OF DE, TEXAS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:TRUSWAL SYSTEMS CORPORATION;REEL/FRAME:004860/0503 Effective date: 19880217 Owner name: TRUSWAL SYSTEMS CORPORATION, A CORP. OF DE, TEXAS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ITW TRUSWAL CORPORATION;REEL/FRAME:004860/0507 Effective date: 19880217 |
|
AS | Assignment |
Owner name: HOUSEHOLD COMMERCIAL FINANCIAL SERVICES, INC., 270 Free format text: SECURITY INTEREST;ASSIGNOR:TRUSWAL SYSTEMS CORPORATION, (A DE. CORP.);REEL/FRAME:004889/0168 Effective date: 19880217 Owner name: HOUSEHOLD COMMERCIAL FINANCIAL SERVICES, INC., ILL Free format text: SECURITY INTEREST;ASSIGNOR:TRUSWAL SYSTEMS CORPORATION, (A DE. CORP.);REEL/FRAME:004889/0168 Effective date: 19880217 |