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Publication numberUS2418578 A
Publication typeGrant
Publication dateApr 8, 1947
Filing dateJan 29, 1944
Priority dateJan 29, 1944
Publication numberUS 2418578 A, US 2418578A, US-A-2418578, US2418578 A, US2418578A
InventorsCrane Walton B
Original AssigneeAllied Plastics Company
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Clasp for plastic cases
US 2418578 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

April s, 1947. W, B, CRANE 2,418,578

CLASP FOR PLASTIC CASES I Filed Jah. 29. 1944 Wa 70N 5. CPA/v; l INVENTOR.

Patented Apr. 8, 1947 CLASP FOR PLASTIC CASES Walton B. Crane, West Los Angeles, Calif., as-

signor to Allied Plastics Company, Los Angeles, Calif., a copartnership composed of Dwight C. Hirsh and Harry G. Long Application January 29, 1944, Serial No. 520,213

(Cl. 22o-60) 2 Claims.

This invention relates generally to plastics, and more particularly to clasps for plastic cases and the like.

An object of the present invention is the provision of a new and improved clasp for plastic cases and the like, such as compacts, vanity cases, cigarette cases, etc. Various types of clasps have been used in the past, and have of course been highly successful in metal construction; also there have been several types of clasps designed especially for use in plastics, and these have been suitable for certain applications. However, none of these have been found .entirelyV suitable for such an article, for instance, as a large plastic compact, Where a good, strong, easily operable clasp, not likely to open accidentally, is requisite.

A further object of the present invention is the provision of a plastic compact embodying an improved clasp. f

, Theclasp of thepresent invention will be best understood from thefollotving` detailed description of one present illustrative embodiment thereof, referenceiforlthis purpose being had to the accompanying drawings, in which:

Fig. 1 `is a plan view of a compact embodying the` clasp, the compact being shown in closed condition;

' Fig. 2 is a section on line 2-2 of Fig. 1,"but showing the lid of the compactin the operation of closing. The full lines show a preliminary position, and the dotted lines indicate the resilient give'of the lid and clasp as closing pressure is exerted; A

Fig. 3 is a View similarto Fig. `2, b ut showing the device closedand Fig. 4 is a bottom plan detail taken as indicated by arrows 4-4in Fig. 3.

In the drawings, numeral I designates a compact formed of a plastic such as cellulose acetate and embodying the clasp of the invention, and this compact includes two hinged halves or parts II and I2, which in this instance consist of a base and a lid, respectively. The compact chosen for illustrative purposes is to be taken as representative of any plastic case or receptacle in which the improvements of the invention may be incorporated, and the invention is of course not to be taken as limited to the specific type of case here shown.

In the particular embodiment of the invention chosen for illustrative purposes the base II and lid I2 are both circular in outline, and both are hollowed out to form the interior compartment I3.

'I'he cavity within the base part II includes a arm whose upper side extends smoothly from the convex top wall surface 28. The curvature of the` circular or cylindrical chamber I4 adaptednto receive a powder puff (not shown), and below is` a slightly concave depression I5 adapted to re` ceive a quantity of face powder. The concave inner surface of this depressiontogether with the correspondingly convex bottom surface I6 of the base renea comparatively thin convex bottom Wall I'I. The base I I is formed with a peripheral and preferably tapering flange-I 8, having a tapering upper surface I9. Inside this flange, on the top, is an upwardly facing horizontal annular seating surface 2l), and inside and raised slightly` above the latter is an annular flange 2| which defines the aforementioned circular chamber I4.

The cavity within the lid part I2 is denedxby a seat 25 for a `mirror 25, and inside said seat by a concave inside wall surface 2l, whichtogether with the correspondingly convexoutside orA top surface 28 define a comparatively thin" convex .top wall 29. Outside seat 25 is antannular dawnwardly facing seat 3U adapted to seat on flange 2l of base II, and around seat 30 is a raised annular seat 3l adapted to seat on annular seat 28 of base II.

Lid I2 has at one side an extension35 received between a pair of hinge lugs 36, and a metal hinge pin 31 passes through the lugs 35 and the extension 35 to provide the hinge.

Diametrically opposite from hinge extension 35 is a clasp extension 4i?, which is in the form of an top of the compact is such that this clasp arm makes an angle of approximately 13 1/2" with horizontal. The underside of this clasp arm is adaptedto engage flat against tapered surface I9` on base II, and the taper of this surface I9 is hence also at IBI/2 with horizontal. Depending from the outer end of the clasp arm is a. hook part or catch 42, which is receivable in a notch or recess 43 formed in the tapered flange I8. As

will appear, the lateral surfaces of this notch or n recess receive the lateral surfaces of the hooked end portion of the clasp arm and may thus afford a lateral positioningor guiding support for the lid as the latter is moved into closed position. The inside or bottom surface 44 of this catch 42 is preferably formed at about 15 with vertical, so that the angle between said surface 44 and the underside of the clasp arm is a few degrees, here 11%2 less than a right angle. The bottom 45 of the notch 43 is also preferably at 15 with vertical, so there is an angle of slightly less than a right angle between the bottom of the notch and the seating surface I9.

Referring more particularly to the full line position of the lid in Fig. 2, the hook part or catch is so spaced from the hinge that it normally overlaps the surface IQ by a small fraction of an inch.

To close the compact, the lid I2 and base I l are squeezed together with the fingers. The concave Wall 29 of the lid, being of plastic, and also being comparatively thin (Figs. 2 and 3 are approximately full size and the typical wall thickness may be understood from an inspection of said figures), is somewhat exible or resilient, and gives slightly under such pressure, with the result that it and the clasp' arm bend inward slightly, and this results in the lower corner of catch 42 swinging outwardly sumcently far to' pass or clear the bottom surface 45 of the notch. Thereupon catch 42 snaps into notch 43 and the parts assume the closed position of Fig. 3.'

locked*closed.` To'v open the compact, upward pressure' is ci courseexerted on the clasp arm, causing the" latter and the whole top wall 29 of'th1 `1idl to give'sli'ghtly; and in this' way the hk--- or catch 42 is freed or cleared from the no-tcllf The clasri` as thus described utilizes the entirey Y uppervhalf or lid of the compact a's a spring, which must be deformed both in closing and in opening th'efcomp'act. Thus' there is secured'. a good and dependable spring; action, which is sure and strong;y and whichl nevertheless is subject to easy andconventional'manipulation by the user.

The 'drawing anddescrip'ti'cn' are of course to be understood as' merely illustrativeV of' one prese'n-t embodiment of theinvention; and it will be evident that various changes in design, structure andl arrangement may be made without departin'glfrom the spirit and: scope of the invention or ofthe appended claims.

I claim:

l.` Al compact comprising a concaved base and a'iconcaved lid hinged-'thereto adapted to meet iny closing plane todei'ine a compartment, said lidi embodying a slightly bendable'resilient wall, mutually abutting seatingv surfaces on said base and lidsui'ro'u'nding said compartment, a peripheral flange on said base projecting outwardly beyond the peripheryfof saidV lid; a claspV arm with afhooked end 'portion projecting from-the l periphery of said lid oppositely from the hinge,

a notch in said flange adapted to receive the hooked portion of said clasp arm, a locking seat at the bottom of said notch over which said hooked portion of said clasp arm is engageable when said lid is moved to closed position, and a surface on said base flangeimmediately inwardly of said seat in said notchand facing toward said clasp arm, said clasp arm' being so disposed that its hooked end normally slightly overlaps said last mentioned surface, but is adapted toA clear s aid surface and engage said locking seat when said bendable resilient wall of said lid and its clasp arm are deflected inwardly.

2:' A-'rcornpact comprising a concavedl base and aconcaved lid` hinged thereto adapted to meet in a closin'g planete define a compartment, said lid embodying -aslightly bendable resilient wall,

, mutually abutting seating surfaces on said base and lid surrounding said compartment, a peripheral flange on said base projecting outwardlybeyo'nd the periphery' of said lid', ai clasp'arrn' with a-hooked' end por'ti'r projecting? from 'tlep l ripheryrof said lid oppositely from the hing a" notch in saidf'fla'ng'e adaptedl to' receiveth'er hooked portion of said clasp arrn, a locking-seat at the" bottom of said notch' over which said hooked' portion' of said clasp arm Yengage'ablef when' said lid is` moved to closed p("si'tio'lfr,4 'and an outwardly and downwardlyv linclinedV surface lon saidl base flange located-immediatelyinwardly of saidV seat in said notchgsai'd clasp' arlfrlltlei'gZ sodsposed' that its hooked endnormally s'lig` overlaps said last mentioned surface,but is a'dap ed' to'clearv said surface and engagesfai'd locking yseat when said bendable resilient wall of-sa`idL lid'a'nd its clasp arm are deflected inwardly.'

WALTON B: GRA-NEB REFRENCES cITE) The following references are'of rvrdithe file of this'patent:

UITEn STATSPATENTS NumberV Y Y vNamev Date"`rr 2,207,532k Carlsonr; ;1July9jl940, 362,712 Boyd" May' 10;;Y 1,950,465 Whitlock Mari` r3; 19,32? 1,547,587` Kendan Ju1y28,{1925 l998,160 D`anie 1s' ,ulyia 19111j 1,950,465 Whitiojck Mar; 13,11v 341 239,274' snadowsky Mar. 22,113'81f 2,329,442 Popp sept. 14,A 19131? 1,817,310 Hauch Augjl';lf3-Elf-A FOREIGN 'PATENTS -V

Patent Citations
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US362712 *Dec 2, 1886May 10, 1887 Watch-case
US998160 *Apr 15, 1910Jul 18, 1911Julian C DanielsLocket.
US1547587 *Dec 5, 1924Jul 28, 1925Parfumerie Rigaud IncMetal compact holder
US1817310 *Sep 30, 1930Aug 4, 1931Wendell M HauchVanity box or case
US1950465 *May 12, 1933Mar 13, 1934Norton LabHinged receptacle
US2207532 *Feb 23, 1939Jul 9, 1940Ingraham E CoCase and movement frame for watches and the like
US2329442 *Nov 5, 1941Sep 14, 1943Mc Gill Mfg CoElectric switch housing
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Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2667966 *Mar 9, 1950Feb 2, 1954Sunbeam CorpShipping and display case for shavers and the like
US3138891 *Mar 9, 1961Jun 30, 1964Gottula Gerard WFishing rod container
US4163496 *Sep 30, 1977Aug 7, 1979P. Ferrero & C. S.P.A.Container for dispensing small objects
US5842486 *Nov 25, 1997Dec 1, 1998Sussex Plastics Inc.Hermetically sealed cosmetic compact case
US6199559Dec 27, 1999Mar 13, 2001Rexam Cosmetic Packaging, Inc.Hermetically sealed cosmetic compact case
USRE39311 *Jan 4, 2000Oct 3, 2006Rexam Beauty And Closures Inc.Hermetically sealed cosmetic compact case
U.S. Classification220/835, 132/301
International ClassificationA45D40/22, A45D40/00
Cooperative ClassificationA45D40/221
European ClassificationA45D40/22H