Connect public, paid and private patent data with Google Patents Public Datasets

Closure fastener

Download PDF

Info

Publication number
US2579354A
US2579354A US18748250A US2579354A US 2579354 A US2579354 A US 2579354A US 18748250 A US18748250 A US 18748250A US 2579354 A US2579354 A US 2579354A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
cover
end
casing
main
sides
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
Elmer J Zelt
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.)
General Electric Co
Original Assignee
General Electric 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

Links

Images

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/02Casings

Description

Dec. 18, 1951 E,VJ ZELT 2,579,354

CLOSURE FASTENER B Filed Sept. 29. 1950 Inventor Elmer J. Zelt HisAtfiorn e y Patented Dec. 18, 1951 fElm'er J. Zelt, Fort Wayne, IndJas'signor' toGeneral Electric Company; a corporation of New York Application ea-Babe 29, 1950, seam. 187,482 j l o This invention relates to closure fasteners and, more particularly, to improvements in cover 2 Claims. (Cl. 220-60) fasteners for casings for small electrical devices,

such as ballasts for fluorescent lamps.

Heretofore covers for casings of the above mentioned type have been fastened in place by screws or rivets, thus requiring a separate fastening operation after the cover has been put in place over the opening in the main body portion of the casing.

In accordance with the present invention, there is provided a novel, simple and inexpensive snap fastener which automatically fastens the cover to the casing when the cover is pressed into place a over the opening in the main body of the casing,

thus entirely eliminating a separate cover fastening operation. In addition, the parts o1 'the fastener are integral with the main parts of the casing and cover and are formed therein at the time those parts are formed. Usually, the casing parts are made of sheet steel and they are stamped automatically to the proper shape.

An object of the invention is to provide a new and improved closure fastener.

Another object of the invention is to provide a new and improved snap action closure fastener.

An additional object of the invention is to provide a new and improved cover fastener for the casing of a relatively small electrical device. such as a ballast for fluorescent lamps.

The invention will be better understood by considering the following description taken in concasing embodying the present invention with a portion thereof shown broken away and in section. 1

Fig. 2 is an enlarged detailed perspective view for illustrating the operation of the "fastener shown in Fig. 1, Fig. 3 is a view similar to Fig. 2 showing. the parts locked or fastenedtogether, and Fig. 4 is an end view taken on line 4 4 of Fig. 3. v

Referring now to the drawing, and fiiore particularly to Fig. 1, there is shown thereinabasing consisting of a main tub-like body portionl and a flat cover member 2. The main portion is pro vided with a pair of outwardly extending oppositely disposed fiat end flanges 3 which lie in the same plane and the cover 2 is piovided w th ends 4 which overlie the flanges 3. Part of each end I of the cover member 2 consists of an'. integral projection 5 which is bent at substanti 1 y right angles to the plane of the cover 2 tow rd 2 the maincasing portion I. These projections 5 flt into openings 6 provided in the end flanges 3 of the main casing portion I.

As shown more clearly in Fig. 2, the projection 5 has a relatively long base I and a relatively short end 8 joined by tapering sides 9. In addition, there are notches I0 in the sides of the projection 5 adjacent to base 'I.

The general shape of the openings 5 is similar to that of the projections 5 and consists of a long inner end I I, a short outer end I2, and tapering sides IS. The length of the short end 8 of the projections 5 corresponds generally to the length of the short outer ends I2 of the openings 6 and, likewise, the length of the base I of the projections 5 corresponds generally to the length of the inner long ends I I of the openings 6.

The operation of the fastener is as follows. When the cover 2 is placed over the opening in the main tub-like portion I of the casing with the ends of the projections 5 entering the openings 5 as shown by the full line position of the projection 5 in Fig. 2, the tapering sides 9 of the projections 5 will engage the tapering sides I 3 of the openingsfi. If, now, pressure is applied forcing the cover down onto the flanges 3, the tapers of the projections 5 and the openings 5 will cause the projections to bend inwardly toward the main casing portion I as shown by the dashed line position of the projection 5 in Fig. 2'. This action will continue until the shoulders of the notches III pass through the openings 6 whereupon the projections 5 will snap outwardly to the position shown in Figs. 1 and 3 whereby the notches I5 embrace the sides I3 of the openings 6 and securelylock the cover in place.

It will thus be seen that the fastening or looking action 01. the fastener takes place automatically in the assembly of the device, that is to say, when the cover 2 is pressed into place on the main body portion I, and that no additional fastening operation is necessary.

If it is desiredf'to remove the cover 2, it is only necessary to bend the ends of the projections 5 inwardly until the shoulders of the notches Ill clear the sides of the openings 6.

While there has been shown and described a particular embodiment of the invention, it will be obvious to those skilled in the art that changes and modifications may be made without departing from the invention, and that it is intended by the appended claims to cover all such changes and modifications as fall within the true spirit and scope of the invention.

What I claim as'new and'desire to'secure by the same plane and a flat cover member having Letters Patent of the United States is: ends which overlie said flanges, an opening in 1. In an electrical device casing of the type each flange having a lon i n r end an a Shor having a main tub-like portion with outwardly outer end joined by straight tapered sides, an extending oppositely disposed flat end flanges in 5 integral projection on each end of said cover exthe same plane and a flat cover member having tending substantially at right angles to the plane ends which overlie said flanges, complementary of said cover toward said main casing portion, shaped ifiterfittifigppenings andbrojfectionstonf eachrprotlectiorrhavings'azlongfldasewandia short said fiangesand cover 'ends, said projectic m's be"-- endijoined bystraight tapered sides'and-notches ing integral portions of said cover ends which are 10 in the sides of each projection adjacent its base, bent at substantially right angles to the plane ofizf this length of the base of each projection being said fiat cover toward said flanges. saidgprojec substantially equal to the long inner end of each tions having at least one notch in their sides ad fiange'opening, the'short end of each projection jacent the surface of said -cover-;=.,said--.eopenings:- A,QbQmSrSHbStaHtIEHX: equal to the length of the and. said projections being of$aperingconfigurae- 5:2 shortnuteniendfo each opening, said notches emtion and so spaced relative to each other that bracing the sideslof said flange openings for said notches embrace the edgesiof saidrecesses fasteningesaid cover in place.

for locking said cover in place. ELME'R J. ZELT.

2. In an electrical ballast casing of theweet 1 i; 1 having a main tub-likei portion with outwardly 20 No references cited.

extend-ingiroppositely disposedflanend-fiangesinz-

US2579354A 1950-09-29 1950-09-29 Closure fastener Expired - Lifetime US2579354A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US2579354A US2579354A (en) 1950-09-29 1950-09-29 Closure fastener

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US2579354A US2579354A (en) 1950-09-29 1950-09-29 Closure fastener

Publications (1)

Publication Number Publication Date
US2579354A true US2579354A (en) 1951-12-18

Family

ID=22689175

Family Applications (1)

Application Number Title Priority Date Filing Date
US2579354A Expired - Lifetime US2579354A (en) 1950-09-29 1950-09-29 Closure fastener

Country Status (1)

Country Link
US (1) US2579354A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2735631A (en) * 1956-02-21 sexton
US2936939A (en) * 1956-10-19 1960-05-17 Lundquist Oliver Box structures
US4776459A (en) * 1985-05-03 1988-10-11 Package Products, Inc. Bakery foods package
US4844330A (en) * 1986-02-06 1989-07-04 International Paper Company Paperboard food carton and divider
US4867303A (en) * 1986-12-31 1989-09-19 Package Products, Inc. Bakery foods package
US5039003A (en) * 1986-02-06 1991-08-13 International Paper Company Paperboard food carton and divider
US5238134A (en) * 1992-08-20 1993-08-24 The United States Of America As Represented By The Director Of The National Security Agency Limited-reuse tamper-evident container
US5265752A (en) * 1991-09-26 1993-11-30 Alliance Plastics Flange protector having integral connectors
US20050167477A1 (en) * 2004-01-30 2005-08-04 Pavaco Plastics Inc. Plug

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2735631A (en) * 1956-02-21 sexton
US2936939A (en) * 1956-10-19 1960-05-17 Lundquist Oliver Box structures
US4776459A (en) * 1985-05-03 1988-10-11 Package Products, Inc. Bakery foods package
US4844330A (en) * 1986-02-06 1989-07-04 International Paper Company Paperboard food carton and divider
US5039003A (en) * 1986-02-06 1991-08-13 International Paper Company Paperboard food carton and divider
US4867303A (en) * 1986-12-31 1989-09-19 Package Products, Inc. Bakery foods package
US5265752A (en) * 1991-09-26 1993-11-30 Alliance Plastics Flange protector having integral connectors
US5238134A (en) * 1992-08-20 1993-08-24 The United States Of America As Represented By The Director Of The National Security Agency Limited-reuse tamper-evident container
US20050167477A1 (en) * 2004-01-30 2005-08-04 Pavaco Plastics Inc. Plug

Similar Documents

Publication Publication Date Title
US3324521A (en) Magnetic fastening means
US3340494A (en) Electrical connector device
US3537555A (en) Overrunning roller clutch
US3432129A (en) Saddle clip
US3229026A (en) Grommet and canister construction
US2965348A (en) Lighting fixture suspension and attachment arrangement
US2823932A (en) Hole edge gripping electrical junction box connector
US4293895A (en) Mounting arrangement for recessed light fixture housing
US2141936A (en) Switch handle guard
US3424333A (en) Outlet box with cover and mounting clips therefor
US4250540A (en) Mounting arrangement for recessed light fixture housing
US2106145A (en) Vehicle lamp
US2963253A (en) Mounting means for electrical outlet boxes
US3426818A (en) Yielding nut retainer
US1983470A (en) Bracket
US2705308A (en) Lamp socket having means for mounting and sealing it in an apertured support
US5941730A (en) Connector installation structure for fuel tank
US5115375A (en) Snap-in retainer sleeve
US2004182A (en) Strap with attached washers and method of making the same
US2240050A (en) Locking means for extension cords and the like
US2133789A (en) Metal container for radio sets
US2403240A (en) Retaining guard for fluorescent lamps
US1409606A (en) Screw retainer
US2188596A (en) Removable bushing
US2870933A (en) Waterproof wall plate with hinged lids