US3822905A - Plastic latch - Google Patents

Plastic latch Download PDF

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Publication number
US3822905A
US3822905A US29762672A US3822905A US 3822905 A US3822905 A US 3822905A US 29762672 A US29762672 A US 29762672A US 3822905 A US3822905 A US 3822905A
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Grant
Patent type
Prior art keywords
portion
latch
position
shank
formed
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
Inventor
V Bell
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.)
HOUSEHOLD MANUFACTURING Inc A DE CORP
King-Seeley Thermos Co
Original Assignee
King-Seeley Thermos 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
Grant date

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    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05CBOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C19/00Other devices specially designed for securing wings, e.g. with suction cups
    • E05C19/06Other devices specially designed for securing wings, e.g. with suction cups in which the securing part if formed or carried by a spring and moves only by distortion of the spring, e.g. snaps
    • 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
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S292/00Closure fasteners
    • Y10S292/38Plastic latch parts
    • 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
    • Y10T292/00Closure fasteners
    • Y10T292/08Bolts
    • Y10T292/0894Spring arm
    • Y10T292/0895Operating means
    • Y10T292/0902Rigid

Abstract

A lunch kit or the like embodying an improved and simplified molded plastic latch for retaining the cover in a closed position. The plastic latch is formed from a single element having a base portion and a latch portion that is integrally connected to the base portion by a shank portion. A handle portion is also carried by the shank portion contiguous to the latch portion for deflecting the shank portion as a cantilever beam to move the latch portion to a released position.

Description

United States Patent [191 Bell [451 1 July 9, 1974 PLASTIC LATCH [75] Inventor: Vernon D. Bell, Westerley, R.l. [73] Assignee: King-Seeley Thermos C0., Norwich,

Conn.

[22] Filed: Oct. 16, 1972 [21] Appl. No.: 297,626

[52] US. Cl. 292/87, 292/D1G. 38 [51] Int. Cl. E05c 19/06 [58] Field of Search 292/87, 114, DIG. 38

[56] References Cited UNlTED STATES PATENTS 1,242,391 10/1917 Ulrich 292/87 1,316,818 9/1919 Sweet l 217/56 2,315,415 3/1943 Gilbert 292/87 X 2,873,880 2/1959 ,Poulos 292/87 X 8/1962 Miller 292/114 3,144,166 3/1964 Cross 220/60 3,630,558 12/1971 Andreini. 292/87 3,711,140 1/1973 Onori 292/87 Primary Examiner-Robrt L. Wolfe Attorney, Agent, or Firm-Harness, Dickey & Pierce ,3 ABSTRACT 2 Claims, 3 Drawing Figures PLASTIC LATCH BACKGROUND OF THE INVENTION cates the structure and adds considerably to its expense.

It is, therefore, a principle object of this invention to provide an improved and simplified latch mechanism.

It is another object of this invention to provide a simplified latch mechanism embodying a resilient element that is biased by its own resilience to one of its positions.

It is another object of this invention to provide an improved and simplified plastic latch.

BRIEF DESCRIPTION OF THE DRAWING FIG. 1 is a perspective view showing a lunch kit embodying this invention.

FIG. 2 is an enlarged cross sectional view taken along the line 22 of FIG. 1.

FIG. 3 is a cross sectional view, in part similar to FIG. 2, showing the latch mechanism in its released position.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A lunch kit embodying this invention is identified generally'by the reference numeral 11. Although the invention is described in connection with such a' lunch kit, it is to be understood that the latch which forms the subject of this invention may be used in other environments. The invention does, however, have particular utility in connection with lunch kits where low cost and foolproof operation is particularly desired.

The lunch kit includes a main body portion 12 that is formed from sheet metal or the like and which is formed with an internal cavity that is adapted to hold articles of food or the like. A cover 13 is hingedly connected to the body portion 12 along one of its peripheral edges in any known manner. The cover 13 is pivotal between an opened position and a closed position, as shown in the drawing. The cover 13 is also formed from sheet metal or the like. A latch mechanism, indicated generally by the reference numeral 14, is positioned adjacent the free end of the cover 13 for holding the cover 13 in a closed position relative to the body 12. The latch mechanism 14 includes a latch piece 15 that is formed from nylon or another spring-like resinous plastic material. The piece 15 has a generally tapered base portion 16 that is adapted to be fixed to the body member 12 by means of a metal attaching clip 17. The clip 17 has tabs 18 that interlock with the body member 12 for securing the elements together.

Extending integrally from the base portion 16 is a shank portion 18 that has an offset upper extremity to clear a rolled over bead 19 formed at the lower periphery of the cover 13. The cover l3 is indented, as at 21, contiguous to the latch mechanism 14 so that the bead 19 serves as a keeper, as will become apparent.

At the upperextremity of the shank portion 18, the latch piece 15 is formed with an integral arcuately shaped latch portion 22. The latch portion 22 has a nose 23 that is adapted to engage the bead 19 at the indented portion 21 for retaining the cover 13 in a closed position (FIG. 2).

A handle portion 24 is integrally connected to the upper end of the shank portion 18 and is also arcuate in shape. The latch portion 22 and handle portion 24 form a substantiallycontinuous arcuate head disposed at the upper end of the shank portion 18 so as to provide a generally T-shaped configuration. The exposed upper surface of the handle portion 24 is formed with integral transversely extending ribs 25 so as to provide a more easily gripped surface.

The latch piece 15 is, as has been noted, resilient and is nonnally maintained by its resilience in the position shown in FIG. 2. In order to release the latch mechanism l4, thumb pressure is applied to the handle portion 24 via ribs 25. This pressure will cause cantilever deflection of the shank portion 18 relative to the base portion 16. The latch portion 22 and particularly its nose 23 will then snap clear of the bead 19 to the position shown in FIG. 3. In this position, the cover 13 may be pivoted to its opened position.

Upon subsequent release of the pressure from the handle portion 24, the latch piece 15 will return to the position shown in FIG. 2. When the cover 13 is again closed, the bead 19 will engage the arcuate upper surface of the latch portion 22 and exert a pressure upon the shank portion 18 that again causes it to deflect as a cantilever beam. When the bead l9 registers with the latch portion of nose 23, the latch piece 15 will again be biased by its own resilience to the latch position shown in FIG. 2. No positive operation is, therefore, necessary to lock the cover 13 in its closed condition.

} I claim:

1. A latch having a closure member or the like, said latch comprising a latch member formed from a resilient plastic material and-having a base portion adapted to be secured to a first member, a shank portion integrally connected to said base portion and extending in cantilevered fashion therefrom, a cross head formed integrally at the other end of said shank portion, one part of said cross head comprising a latching portion adapted to coact with a keeper fixed to a second member for securing the first and second members together, the other part of said cross head forming a handle portion, and transversely extending ribs formed on said handle portion of said cross head for providing a gripping surface for resilient cantilevered deflection of said shank portion upon the application of pressure to said handle portion for movement of said latch portion from a latched position to a released position and the return to itslatched position upon removal of said pressure, said shank portion being offset adjacent said latching 3 4 portion for providing a clearance between said shank erate with the keeper and to be cammed by the keeper portion and the cooperating keeper. to its released position upon subsequent movement of 2. A latch as set forth in claim 1, wherein the latching the first and second members together. portion terminates in an arcuate nose adapted to coop-

Claims (2)

1. A latch having a closure member or the like, said latch comprising a latch member formed from a resilient plastic material and having a base portion adapted to be secured to a first member, a shank portion integrally connected to said base portion and extending in cantilevered fashion therefrom, a cross head formed integrally at the other end of said shank portion, one part of said cross head comprising a latching portion adapted to coact with a keeper fixed to a second member for securing the first and second members together, the other part of said cross head forming a handle portion, and transversely extending ribs formed on said handle portion of said cross head for providing a gripping surface for resilient cantilevered deflection of said shank portion upon the application of pressure to said handle portion for movement of said latch portion from a latched position to a released position and the return to its latched position upon removal of said pressure, said shank portion being offset adjacent said latching portion for providing a clearance between said shank portion and the cooperating keeper.
2. A latch as set forth in claim 1, wherein the latching portion terminates in an arcuate nose adapted to cooperate with the keeper and to be cammed by the keeper to its released position upon subsequent movement of the first and second members together.
US3822905A 1972-10-16 1972-10-16 Plastic latch Expired - Lifetime US3822905A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US3822905A US3822905A (en) 1972-10-16 1972-10-16 Plastic latch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US3822905A US3822905A (en) 1972-10-16 1972-10-16 Plastic latch

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US3822905A true US3822905A (en) 1974-07-09

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Application Number Title Priority Date Filing Date
US3822905A Expired - Lifetime US3822905A (en) 1972-10-16 1972-10-16 Plastic latch

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Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4043349A (en) * 1976-01-19 1977-08-23 Susan Gays Removable crib canopy
US4057879A (en) * 1975-03-12 1977-11-15 E. I. Du Pont De Nemours And Company Headers with insertable latch members
DE2655031A1 (en) * 1976-12-04 1978-06-15 Messerschmitt Boelkow Blohm Plastics door catch - comprises L=shaped support and L=shaped catch with hinge section provided between the members
US4114934A (en) * 1974-10-09 1978-09-19 Kelly Donald V Handle for sliding window
US4209916A (en) * 1978-09-25 1980-07-01 Doyel John S Hand-operated kitchen appliance for drying vegetables and the like
US4216984A (en) * 1979-01-08 1980-08-12 Brunswick Corporation Automatic locking latch
US4261479A (en) * 1980-03-14 1981-04-14 James Caserta Releasable lid clasp for cans
US4270668A (en) * 1980-02-05 1981-06-02 Shop-Vac Corporation Buckle or latch for holding lid to container
US4344646A (en) * 1980-05-27 1982-08-17 Woodstream Corporation Detachable latch
FR2508690A1 (en) * 1981-06-26 1982-12-31 Thomson Brandt Lock closure panel of an apparatus such as a cassette player and apparatus comprising such a lock
US4411445A (en) * 1980-06-13 1983-10-25 Adidas - Fabrique De Chassures De Sport Ski binding to secure a shoe to a ski
US4714284A (en) * 1983-04-29 1987-12-22 Varlet Marc F Latch assembly
GB2200942A (en) * 1987-01-26 1988-08-17 Gio Style Assembly fastening articles together
US5024471A (en) * 1990-07-25 1991-06-18 Rubbermaid Incorporated Safety release latch
DE4120551A1 (en) * 1990-06-22 1992-01-09 Toshiba Kawasaki Kk Locking mechanism for holding a movable member in a closed position
US5123681A (en) * 1991-03-20 1992-06-23 Fluoroware, Inc. Latch for wafer storage box for manual or robot operation
US5193706A (en) * 1990-01-26 1993-03-16 Rubbermaid Incorporated Toolbox
US5238142A (en) * 1990-01-26 1993-08-24 Rubbermaid Incorporated Toolbox
US5319937A (en) * 1991-10-10 1994-06-14 Igloo Products Corporation Thermoelectric cooler and warmer
US6267078B1 (en) * 1995-06-05 2001-07-31 Servando Ronald Pina Portable cat litter case and travel kit
US6568719B2 (en) * 2000-04-07 2003-05-27 Itw Industrial Components, S.R.L. Door opening device, in particular for an electric household appliance door
US20030160057A1 (en) * 2000-07-12 2003-08-28 Wiggo-Arne Johansen Blocking device for a waste container lid
US20040207216A1 (en) * 1999-08-23 2004-10-21 Sio Yeok Sing Catch
US20100043367A1 (en) * 2008-08-21 2010-02-25 Mann+Hummel Gmbh Filter housing with quick release clip adapted to disengage the filter element
US20110186562A1 (en) * 2010-02-01 2011-08-04 Seb S.A. Electrical Cooking Apparatus Provided with a Removable Cooking Plate
US20140299658A1 (en) * 2010-12-07 2014-10-09 Wincor Nixdorf International Gmbh Cash cassette with electronic money seal

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1242391A (en) * 1917-01-26 1917-10-09 Charles Ulrich Window-catch.
US1316818A (en) * 1919-09-23 Quick-detachable shipping-case cover
US2315415A (en) * 1939-10-12 1943-03-30 George Brickler Sanitary milking receptacle
US2873880A (en) * 1957-07-15 1959-02-17 Ernest A Poulos Combined garbage can handle and latch
US3050322A (en) * 1960-05-16 1962-08-21 Daryl Ind Inc Releasable latch assembly
US3144166A (en) * 1962-01-05 1964-08-11 Jr Eason Cross Catch mechanism
US3630558A (en) * 1970-08-28 1971-12-28 Bell Telephone Labor Inc Quick-mounting hardware
US3711140A (en) * 1971-04-09 1973-01-16 B Onori Cabinet door latch

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1316818A (en) * 1919-09-23 Quick-detachable shipping-case cover
US1242391A (en) * 1917-01-26 1917-10-09 Charles Ulrich Window-catch.
US2315415A (en) * 1939-10-12 1943-03-30 George Brickler Sanitary milking receptacle
US2873880A (en) * 1957-07-15 1959-02-17 Ernest A Poulos Combined garbage can handle and latch
US3050322A (en) * 1960-05-16 1962-08-21 Daryl Ind Inc Releasable latch assembly
US3144166A (en) * 1962-01-05 1964-08-11 Jr Eason Cross Catch mechanism
US3630558A (en) * 1970-08-28 1971-12-28 Bell Telephone Labor Inc Quick-mounting hardware
US3711140A (en) * 1971-04-09 1973-01-16 B Onori Cabinet door latch

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4114934A (en) * 1974-10-09 1978-09-19 Kelly Donald V Handle for sliding window
US4057879A (en) * 1975-03-12 1977-11-15 E. I. Du Pont De Nemours And Company Headers with insertable latch members
US4043349A (en) * 1976-01-19 1977-08-23 Susan Gays Removable crib canopy
DE2655031A1 (en) * 1976-12-04 1978-06-15 Messerschmitt Boelkow Blohm Plastics door catch - comprises L=shaped support and L=shaped catch with hinge section provided between the members
US4209916A (en) * 1978-09-25 1980-07-01 Doyel John S Hand-operated kitchen appliance for drying vegetables and the like
US4216984A (en) * 1979-01-08 1980-08-12 Brunswick Corporation Automatic locking latch
US4270668A (en) * 1980-02-05 1981-06-02 Shop-Vac Corporation Buckle or latch for holding lid to container
US4261479A (en) * 1980-03-14 1981-04-14 James Caserta Releasable lid clasp for cans
US4344646A (en) * 1980-05-27 1982-08-17 Woodstream Corporation Detachable latch
US4411445A (en) * 1980-06-13 1983-10-25 Adidas - Fabrique De Chassures De Sport Ski binding to secure a shoe to a ski
US4496177A (en) * 1981-06-26 1985-01-29 Thomson-Brandt Latch for the closure panel of a unit such as a cassette reader and a unit fitted with said latch
EP0069609A1 (en) * 1981-06-26 1983-01-12 SOCIETE D'ELECTRONIQUE INDUSTRIELLE de MOULINS - SELIMO Catch for the lid of an apparatus such as a cassette reader, and apparatus having such a catch
FR2508690A1 (en) * 1981-06-26 1982-12-31 Thomson Brandt Lock closure panel of an apparatus such as a cassette player and apparatus comprising such a lock
US4714284A (en) * 1983-04-29 1987-12-22 Varlet Marc F Latch assembly
GB2200942A (en) * 1987-01-26 1988-08-17 Gio Style Assembly fastening articles together
GB2200942B (en) * 1987-01-26 1991-08-21 Gio Style Assemblies comprising articles fastened together
US5238142A (en) * 1990-01-26 1993-08-24 Rubbermaid Incorporated Toolbox
US5193706A (en) * 1990-01-26 1993-03-16 Rubbermaid Incorporated Toolbox
DE4120551A1 (en) * 1990-06-22 1992-01-09 Toshiba Kawasaki Kk Locking mechanism for holding a movable member in a closed position
US5024471A (en) * 1990-07-25 1991-06-18 Rubbermaid Incorporated Safety release latch
US5123681A (en) * 1991-03-20 1992-06-23 Fluoroware, Inc. Latch for wafer storage box for manual or robot operation
US5319937A (en) * 1991-10-10 1994-06-14 Igloo Products Corporation Thermoelectric cooler and warmer
US6267078B1 (en) * 1995-06-05 2001-07-31 Servando Ronald Pina Portable cat litter case and travel kit
US20040207216A1 (en) * 1999-08-23 2004-10-21 Sio Yeok Sing Catch
US7427085B2 (en) 1999-08-23 2008-09-23 Yeok Sing Sio Catch
US6568719B2 (en) * 2000-04-07 2003-05-27 Itw Industrial Components, S.R.L. Door opening device, in particular for an electric household appliance door
US20030160057A1 (en) * 2000-07-12 2003-08-28 Wiggo-Arne Johansen Blocking device for a waste container lid
US7976604B2 (en) * 2008-08-21 2011-07-12 Mann + Hummel Gmbh Filter housing with quick release clip adapted to disengage the filter element
US20100043367A1 (en) * 2008-08-21 2010-02-25 Mann+Hummel Gmbh Filter housing with quick release clip adapted to disengage the filter element
US20110186562A1 (en) * 2010-02-01 2011-08-04 Seb S.A. Electrical Cooking Apparatus Provided with a Removable Cooking Plate
CN102164430A (en) * 2010-02-01 2011-08-24 Seb公司 Electrical cooking appliance with removable hot plate
US8481894B2 (en) * 2010-02-01 2013-07-09 Seb S.A. Electrical cooking apparatus provided with a removable cooking plate
CN102164430B (en) * 2010-02-01 2015-08-05 Seb公司 Electric cooking apparatus having a cooking plate removably
US20140299658A1 (en) * 2010-12-07 2014-10-09 Wincor Nixdorf International Gmbh Cash cassette with electronic money seal
US9569908B2 (en) * 2010-12-07 2017-02-14 Wincor Nixdorf International Gmbh Cash cassette with electronic money seal

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Legal Events

Date Code Title Description
AS Assignment

Owner name: HOUSEHOLD INTERNATIONAL, INC., A CORP. OF DE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:HOUSEHOLD MANUFACTURING, INC., A CORP. OF DE;REEL/FRAME:005610/0053

Effective date: 19891212

Owner name: HOUSEHOLD MANUFACTURING INC., A DE CORP.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:KING-SEELEY THERMOS CO., A DE CORP.;REEL/FRAME:005617/0487

Effective date: 19891212

Owner name: THERMOS CO., THE, A CORP. OF DE, STATELESS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HOUSEHOLD INTERNATIONAL, INC., A CORP. OF DE;REEL/FRAME:005610/0066

Effective date: 19891212