US2471612A - Thermoplastic luggage frame - Google Patents

Thermoplastic luggage frame Download PDF

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Publication number
US2471612A
US2471612A US636661A US63666145A US2471612A US 2471612 A US2471612 A US 2471612A US 636661 A US636661 A US 636661A US 63666145 A US63666145 A US 63666145A US 2471612 A US2471612 A US 2471612A
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Prior art keywords
walls
frame
luggage
thermoplastic
portions
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Expired - Lifetime
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US636661A
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Freeman Harry
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Freeman Harry
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    • AHUMAN NECESSITIES
    • A45HAND OR TRAVELLING ARTICLES
    • A45CPURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C3/00Flexible luggage; Handbags
    • A45C3/001Flexible materials therefor
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/24Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24174Structurally defined web or sheet [e.g., overall dimension, etc.] including sheet or component perpendicular to plane of web or sheet
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/24Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24777Edge feature

Description

May 31, 1949. H. FREEMAN THERMOPLASTIC LUGGAGE FRAME Filed Dec. 22, 1945 INVENTOR I wee/flan ATTO R N EY S Patented May 31, 1949 UNITED STAT-ES PATENT OFFICE 2,471,612 THERMOPLASTIC LUGGAGE FRAME Harr Freeman, Providence, R. I. Application December 22, 1945, Serial No. 636,661

1 Claim. 1

This invention relates to improvements in luggage and the method of making the same, more particularly to luggage the walls of which are flexible.

age of this general construction in which the-walls are made of cloth material and the like usually have the walls sewed in place. This is a relatively expensive and slow method of securing the walls of lug age in place;

An object of this invention is to provide a thermo-plastic frame having flanged portions with a rib between the flanged portions which form shoulders for abutting the walls of a luggage unit against the shoulders for being readily secured to the frame.

With these and other objects in view, the invention consists of certain novel features of construction as will be more fully described and particularly pointed out in the appended claim.

In the accompany drawing:

Fig. 1 is a perspective view of a piece of luggage embodying my invention;

Fig. 2 is a perspective view of a fragmentary portion of a section of stock employed for making the frame;

Fig. 3 is a perspective view of a fragmentary portion of one of the walls of the luggage;

Fig. 4 is a sectional view taken substantially on line 4-4 of Fig. l; and

Fig. 5 is a view illustrating diagrammatically an electric circuit forming part of the equipment employed for bonding the walls of the luggage to the frame.

In proceeding with the invention, I make a. frame of a suitable thermoplastic material such as vinylidene chloride which is extruded to provide a proper cross-section having portions at the proper angle to each other providing surfaces for receiving the walls of the lug age to be secured thereto. The edge portions of the walls which may be of a cloth material are coated with a film of a suitable thermoplastic material, preferably similar to the material used in making the frame. With the walls held in proper. position on the frame, the same are joined by welding to each other by suitable equipment for generating heat, such as by means of a high frequency of electric current in the radio frequency range.

Referring to the drawings for a more detailed description of the invention, Ill designates generally a piece of luggage having frames ll made of an extruded vinylidene chloride. The frames may support side walls 12 and be connected by a flexible bottom wall l3 and edge walls l5, all joined to these frames by means of a weld bond have secured thereto a fastening device I8 01 the so-called zipper type to close or open the entrance. Handles I! are provided for carrying the luggage and these may be secured to the walls I2 in any suitable manner such as by sewing the same as at I8.

The frame material is extruded in a form to provide a rib l9 from both sides of which there extend portions 26 providing shoulders 2!. The walls of the luggage in the present instance are made of a cloth material and cut to the proper shape. A film of a suitable thermoplastic material, preferably the same as that from which the frame is made, is applied to the edge portions 22. 22 of the walls. The coated walls are positioned to overlay and engage the portions 20 with the edges 23 of the walls abutting the shoulder 2|.

With the walls in proper position electrodes 24 of a proper shape are positioned to overlay and engage the outer surface of the thermoplastic coated edge portions of the walls as at 25, shown in Fig. 5. An electrode 26 is positioned to engage the inner surface of the frame as at 21. shown in Fig. 5. These electrodes are connected by conductors 28 and 29 to a source of high frequency electric current, generally designated 36. which will provide a high frequency field to produce sufiicient heat to weld join the coated edge portions of the walls to the frame. The source of electric power herein shown comprises an oscillating circuit of the so-called Hartley type as shown in Patent 1,356,763. This circuit is well known in the art'and it is not deemed necessary to describe the same for a clear understanding of the invention.

I claim:

A luggage unit comprising a body portion having a plurality of walls, a thermoplastic frame extending completely about the edges of said walls and having a central rib and flange portions, said flange portions having outer surfaces extending from opposite sides of said rib substantially at right angles to each other to provide shoulders on said ribs, said shoulders and said surfaces forming exterior angles of at least ninety degrees, marginal portions of said walls being positioned adjacent said shoulders and in contact with said surfaces, said rib having a protuberance joining said shoulders and positioned outwardly of planes containing the walls, and said walls being weld bonded to said flanges.

HARRY FREEMAN.

(References on following page) Coventry Mar. 31, 1936 Name Date Pitm-an July 20, 1937 Crandell July 13, 1943 Adelman Feb. 29, 1944 Slaughter Nov. '6, 1945 Haberstump Jan. 8, 1946 Lincoln Aug. 27, 1946 FOREIGN PATENTS A Country Date Great Britain Dec. 10. 1925

US636661A 1945-12-22 1945-12-22 Thermoplastic luggage frame Expired - Lifetime US2471612A (en)

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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2487951A (en) * 1948-09-03 1949-11-15 Stein Leo Luggage seam reinforced by a u-shaped plastic strip having a tall-shaped cross-section
US2532517A (en) * 1948-05-15 1950-12-05 Protex Company Shoe bag
US2610715A (en) * 1949-07-06 1952-09-16 Oshkosh Trunk And Luggage Co Construction of corner sections in luggage
US2658543A (en) * 1950-08-05 1953-11-10 Frank O Budnick Method of making handbags and products
US2662620A (en) * 1950-10-20 1953-12-15 Robert J Vojta Binding for luggage seams and the like
US2686581A (en) * 1953-01-21 1954-08-17 Smith Max Suitcase
US2751321A (en) * 1952-04-23 1956-06-19 Const Mecaniques De Stains Soc Method of butt welding thermoplastic sheets
US2969822A (en) * 1958-02-13 1961-01-31 Stein Leo Briefcase with reinforced edge structure
US3049260A (en) * 1960-07-13 1962-08-14 Alton H Stone Cushioning material
US3077912A (en) * 1958-09-05 1963-02-19 Kiehl Heinrich Frames, particularly for ladies' handbags
US3125197A (en) * 1964-03-17 Attache construction
US3142601A (en) * 1962-08-10 1964-07-28 Edgwin R Polk Method and apparatus for fabricating a plastic container
US3214314A (en) * 1962-02-12 1965-10-26 Francis W Rowbottam Method for screen assembly
US3260511A (en) * 1962-07-20 1966-07-12 Ici Ltd Water cooling towers
US3378423A (en) * 1965-01-13 1968-04-16 Keene Packaging Associates Fused container structure and method and apparatus for producing it
US3578115A (en) * 1968-10-21 1971-05-11 Rapid American Corp Utility bag
US5117952A (en) * 1990-12-28 1992-06-02 Suh Young H Portable safety bag
US20040069584A1 (en) * 2002-10-10 2004-04-15 Chen-Chuan Wu Angular construction of luggage cabinet
US20130192943A1 (en) * 2012-02-01 2013-08-01 Nike, Inc. Bag With Reinforcing Seam Tape

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1301069A (en) * 1917-02-14 1919-04-15 James M Macdonald Method of molding and ornamenting plastic substances.
US1381149A (en) * 1919-06-23 1921-06-14 Wheary George Henry Reinforced trunk-edge construction
US1399377A (en) * 1921-04-23 1921-12-06 Athelstan H Christie Handbag
GB243830A (en) * 1924-09-12 1925-12-10 Walter Frederick Dash Improvements in or relating to trunks, portmanteaus, attache cases and the like
US1999424A (en) * 1933-02-16 1935-04-30 Seitz Charles Henry Traveling bag
US2035593A (en) * 1933-12-08 1936-03-31 Hookless Fastener Co Handbag
US2087480A (en) * 1935-10-30 1937-07-20 Du Pont Cementing process
US2324068A (en) * 1941-06-18 1943-07-13 Compo Shoe Machinery Corp Electrostatic bonding apparatus
US2343037A (en) * 1941-02-27 1944-02-29 William I Adelman Frame
US2388297A (en) * 1941-07-10 1945-11-06 Extruded Plastics Inc Composite article, including extruded sections
US2392734A (en) * 1941-10-09 1946-01-08 Murray Corp Plastic joint construction
US2406697A (en) * 1943-12-24 1946-08-27 Virginia Lincoln Corp Joint construction

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1301069A (en) * 1917-02-14 1919-04-15 James M Macdonald Method of molding and ornamenting plastic substances.
US1381149A (en) * 1919-06-23 1921-06-14 Wheary George Henry Reinforced trunk-edge construction
US1399377A (en) * 1921-04-23 1921-12-06 Athelstan H Christie Handbag
GB243830A (en) * 1924-09-12 1925-12-10 Walter Frederick Dash Improvements in or relating to trunks, portmanteaus, attache cases and the like
US1999424A (en) * 1933-02-16 1935-04-30 Seitz Charles Henry Traveling bag
US2035593A (en) * 1933-12-08 1936-03-31 Hookless Fastener Co Handbag
US2087480A (en) * 1935-10-30 1937-07-20 Du Pont Cementing process
US2343037A (en) * 1941-02-27 1944-02-29 William I Adelman Frame
US2324068A (en) * 1941-06-18 1943-07-13 Compo Shoe Machinery Corp Electrostatic bonding apparatus
US2388297A (en) * 1941-07-10 1945-11-06 Extruded Plastics Inc Composite article, including extruded sections
US2392734A (en) * 1941-10-09 1946-01-08 Murray Corp Plastic joint construction
US2406697A (en) * 1943-12-24 1946-08-27 Virginia Lincoln Corp Joint construction

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125197A (en) * 1964-03-17 Attache construction
US2532517A (en) * 1948-05-15 1950-12-05 Protex Company Shoe bag
US2487951A (en) * 1948-09-03 1949-11-15 Stein Leo Luggage seam reinforced by a u-shaped plastic strip having a tall-shaped cross-section
US2610715A (en) * 1949-07-06 1952-09-16 Oshkosh Trunk And Luggage Co Construction of corner sections in luggage
US2658543A (en) * 1950-08-05 1953-11-10 Frank O Budnick Method of making handbags and products
US2662620A (en) * 1950-10-20 1953-12-15 Robert J Vojta Binding for luggage seams and the like
US2751321A (en) * 1952-04-23 1956-06-19 Const Mecaniques De Stains Soc Method of butt welding thermoplastic sheets
US2686581A (en) * 1953-01-21 1954-08-17 Smith Max Suitcase
US2969822A (en) * 1958-02-13 1961-01-31 Stein Leo Briefcase with reinforced edge structure
US3077912A (en) * 1958-09-05 1963-02-19 Kiehl Heinrich Frames, particularly for ladies' handbags
US3049260A (en) * 1960-07-13 1962-08-14 Alton H Stone Cushioning material
US3214314A (en) * 1962-02-12 1965-10-26 Francis W Rowbottam Method for screen assembly
US3260511A (en) * 1962-07-20 1966-07-12 Ici Ltd Water cooling towers
US3142601A (en) * 1962-08-10 1964-07-28 Edgwin R Polk Method and apparatus for fabricating a plastic container
US3378423A (en) * 1965-01-13 1968-04-16 Keene Packaging Associates Fused container structure and method and apparatus for producing it
US3578115A (en) * 1968-10-21 1971-05-11 Rapid American Corp Utility bag
US5117952A (en) * 1990-12-28 1992-06-02 Suh Young H Portable safety bag
US20040069584A1 (en) * 2002-10-10 2004-04-15 Chen-Chuan Wu Angular construction of luggage cabinet
US20130192943A1 (en) * 2012-02-01 2013-08-01 Nike, Inc. Bag With Reinforcing Seam Tape
US9247794B2 (en) * 2012-02-01 2016-02-02 Nike, Inc. Bag with reinforcing seam tape
US9731449B2 (en) 2012-02-01 2017-08-15 Nike, Inc. Method for applying reinforcing seam tape

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