US3910455A

US3910455A - Razor blade dispenser

Info

Publication number: US3910455A
Application number: US423626A
Authority: US
Inventors: Frank A Ferraro
Original assignee: Warner Lambert Co LLC
Current assignee: Warner Lambert Co LLC
Priority date: 1973-02-07
Filing date: 1973-12-10
Publication date: 1975-10-07
Anticipated expiration: 1992-10-07

Abstract

The specific disclosure provides a safety razor blade dispenser of the type in which the uppermost blade in a stack of blades is pushed end-wise into shaving position in a head of an associated razor. The dispenser comprises a molded plastic body having the stack of blades biased upwardly against narrow ribs, and a pusher slidable in a slot formed in the top of the body for engaging the uppermost blade in the stack and pushing it through a blade exit aperture formed in a forward end wall of the body. An end closure member is positioned in an opened rear end of the body. The end closure member includes a pair of slots in an upper rear surface thereof for seating rear portions of the ribs.

Description

United States Patent 11 1 Ferraro 1451 Oct. 7, 1975 [73] Assignee: Warner-Lambert Company. Morris Plains. NJ.

[22] Filed: Dec. 10, 1973 [21] Appl. No: 423,626

Related Application Data [63] Continuationin-part of Ser. No, 330.368, Feb. 7,

I973. abandoned.

Primary lfxaminer-Rbert B Reeves Assistant E.tamincrjohn P. Shannon Attorney. Agent. or Firm-James F. Powers, Jr.; Albert H. Graddis [5 7] ABSTRACT The specific disclosure provides a safety razor blade dispenser of the type in which the uppermost blade in a stack of blades is pushed end-wise into shaving posi- [52] us. Cl H 221/102; 221/232 tion in a head of an associated razor The dispenser [51] Int. Cl. B651) 83/10 comprises a molded plastic body having the stack of [58] Field of Search 221/102. 232 279, 276; blades biased p y uguiflst narrow ribs and 21 220/41; /354 359 pusher slidablc in a slot formed in the top of the body for engaging the uppermost blade in the stack and [56] Referen e Cited pushing it through a blade exit aperture formed in 21 UNITED STATES PATENTS forward end wall of the body. An end closure member 2 300 596 11/194,) R be t 206/359 is positioned in an opened rear end of the body. The 2792933 S/WS; a g "5 X end closure member includes a pair of slots in an 3:429:472 2/1969 'i' 220/41 X upper rear surface thereof for seating rear portions of 3,549,046 12/1970 Iten 1. 221/102 the ribs- FOREIGN PATENTS OR APPLICATIONS 6 Claims, 12 Drawing Figures 1,457,394 11/1969 Germany 221/232 1| H1" 1 m I l ,4

6 l' 2 I I /I1 I i/i l /8 l ll ll US. Patent Oct. 7,1975 Sheet 1 of2 3,910,455

RAZOR BLADE DISPENSER CROSS-REFERENCE TO RELATED APPLICATION This application is a continuation-in-part of US. patent application Ser. No. 330,368, filed Feb. 7, 1973, now abandoned.

BACKGROUND OF INVENTION 1. Field of the Invention The present invention relates to safety razor blade dispensers of the type in which the uppermost blade in a stack of blades is adapted to be pushed end-wise into shaving position in a head of an associated razor. More particularly, the present invention relates to molded plastic dispensers of such type.

2. Description of the Prior Art Molded plastic razor blade dispensers having a finger-operated pusher for dispensing the uppermost blade in a stack are known in the art. ,A problem in molded plastic dispensers having pushers is that dimensions of inter-engaging parts is critical because molding practices inherently leave slight sinks and warping in the dispenser body surfaces which may result in malfunction of the dispenser, for example, by the pusher binding with the top surface of the dispenser body.

US. Pat. No. 3,288,328 provides a molded plastic dispenser wherein a pusher has channels formed on the underside thereof for sliding engagement with laterally extending flanges formed on the top part of the dis-, penser body. US. Pat. No. 3,549,046 is another example of a molded plastic dispenser, and provides narrow, laterally extending shallow lands on the underside of the fingeroperated pusher for sliding engagement with the upper surface of the dispenser body.

SUMMARY OF THE INVENTION The present invention provides an improved blade dispenser having a relatively simple structure to permit ease of manufacture, and to insure structural rigidity.

In accordance with the present invention, there is provided a safety razor blade dispenser of the type in which the uppermost blade in a stack of blades is adapted to be pushed end-wise into shaving position in a head of an associated razor. The dispenser comprises a horizontally elongated body of molded plastic having top and bottom walls, a pair of side walls extending between the top and bottom walls, and a forward end wall extending between the side walls at one end of the body. The other end of the plastic body is opened between the side walls. A blade pusher is slidable in a longitudinal slot formed in the top wall of the body, and includes a blade-engaging portion below the top wall for engaging the uppermost blade in a stack of blades in the body when the pusher is moved from a rearmost position in the slot forwardly to push the uppermost blade through a blade exit aperture in the forward end wall. The blades are biased upwardly against downwardly directed ribs formed on each side of the slot. An end closure member is positioned in the opened end of the body, and includes a pair of slots in an upper rear surface for seating a rear portion of each one of the downwardly directed ribs. By seating the ribs in the closure member slots, outward and inward movement of the dispenser side walls is limited.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side elevational view of a dispenser embodiment constructed in accordance with the present invention with a portion of the dispenser body cut away;

FIG. 2 is a top plan view of the dispenser with a pusher moved forwardly to partially eject the uppermost blade, and with a portion of the top wall of the dispenser body cut away;

FIG. 3 is an elevational view of the front end of the dispenser;

FIG. 4 is a side elevational view of a pusher component;

FIG. 5 is a bottom plan view of the pusher component of FIG. 4;

FIG. 6 is an elevational view of the rear end of the pusher of FIGS. 4 and 5;

FIG. 7 is a perspective view of an end closure member used in the embodiment of FIG. 1;

FIG. 8 is a top plan view of the end closure member of FIG. 7;

FIG. 9 is a longitudinal cross-section view of the body of the dispenser of FIGv 1;

FIG. 10 is a cross-sectional view of the body of the dispenser taken along Lines l0l0 of FIG. 9;

FIG. 11 is an elevational view of the rear end of the dispenser embodiment with the end closure member removed; and

FIG. 12 is a cross-sectional view of the body of the dispenser taken along Lines l2l2 of FIG. 2.

DESCRIPTION OF SPECIFIC EMBODIMENTS As illustrated in FIGS. 1 and 2, the embodiment of the present invention comprises three main components formed ofmolded plastic. Specifically, the embodiment comprises a dispenser body 10 which provides a storage enclosure for a stack of unused blades 12, an end closure 14. for closing off the rear end of the body 10 after the unused stack of blades 12 is loaded therein, and a blade pusher 16 which is manipulated by a user to slide the uppermost blade from the stack of unused blades 12 into a head of well-known single edge razors such as shown in US. Pat. Nos. 2,9l 1,713, 2,911,714 and 3,203,093. With reference to the figures, the dispenser body 10 is an elongated molded plastic structures having a forward end wall 18 which isjoined at its lower end with a bottom wall 20. The dispenser body 10 also has a top wall 21 formed by a pair of

horizontal panels

22, 24 which are spaced apart so that the inner edges of the

respective panels

22, 24 define a slot 26 extending the length of the body 10 rearwardly from the forward end wall 18. The portion of the forward end wall 18 which bridges the slot 26 acts a stop abutment to limit forward travel of the blade pusher 16.

The body 10 also has a front side wall 30 and a coextensive back side wall 32, each of the

side walls

30, 32 being formed integrally with the

respective panels

22, 24, and with the bottom wall 20. The

panels

22, 24 and the

walls

20, 30, 32 all terminate at the rear of the body 10 in a common vertical plane to define an open rear end 33 (FIG. 9).

The interior of the body 10 is also provided with an integrally formed horizontal partition wall 34 formed with the forward end wall 18 and

side walls

30, 32. The rear end of the partition wall 34 terminates a short distance from the open rear end 33 of the body 10 as shown at least in FIG. 1 to permit the reception of the end closure 14 within the rear end 33. The partition wall 34 divides the interior of the body into an upper compartment 36'which supportingly receives the stack of unused blades 12, and a lower compartment 40 which serves as a used blade chamber for receiving used blades removed from the razor when a blade change has been made. The bottom wall is provided with a slot 38 for providing access to the lower compartment 40 for inserting a used blade therein. The stack of unused blades 12 is supported in the upper compartment 36 on a bowed spring member 42 which, when the pusher 16 is in its rearmost position, biases the stack upwardly (FIG. 1)' to urge the uppermost blade against a pair of

longitudinal ribs

44, 46 formed on the underside of the

panels

22, 24, respectively. When thus biased upwardly against the

ribs

44,46, the uppermost blade 13 registers with a blade exit slot 48 formed in the forward end wall 18 (FIG. 3). It will be noted from at least FIG. 10 that the

ribs

44, 46 extend from the forward end wall 18 to the open rear end 33.

The dispenser body 10 is also provided with an integrally formed key 50 which, in a conventional manner and as described in at least US. Pat. Nos. 2,911,713 and 2,91 1,714, is inserted in a razor head during the course of a blade change to align the exit slot 48 with the razor head and to condition the razor head for receipt of the uppermost blade 13.

As noted above, the open rear end 33 of the body 10 receives and is closed off by an end closure 14. With reference to FIGS. 1, 2, 7 and 8, the end closure 14 is an essentially hollow structure having an upper part I consisting of

side walls

60, 62, a front wall 64, and a rear wall 66. The rear wall 66 extends the full depth of the body 10 to close off the open rear end 33 of the body 10. The end closure 14 is closely received within the dispenser body 10 and is provided with an elon gated downwardly depending portion 69 I having a wedge-like projection 68 which extends outwardly from the side wall 62 to engage in an aperature 70 formed in the front side wall to act as a locking means for retaining the end closure 14 in the body 10.

With reference to FIG. 7, the rear end wall 66 of the end closure 14 extends laterally from the. side wall 62 and has an angled instep 83. An opposing angled instep 118 (FIG. 1) is formed on the front side wall 30 of the body 10, and the

insteps

83, 118 can be used to maintain a decorative insert (not shown) on the front side wall 30.

In addition to closing off the rear end of the body 10, the end closure 14 provides means with which the stack of blades 12 is positioned within the dispenser body 10 in such a manner as to maintain the cutting edges thereof out of contact with the front side wall 30. With particular reference to FIGS. 2, 7 and 8, the stack of blades 12 is positioned within the dispenser body 10 by an angled lug 74 formed at the corner of the end closure 14 defined by the juncture of front wall 64 and side wall 62. The lug 74 has a vertical edge surface 75 disposed at an angle of substantially 45 with the longitudinal axis of the dispenser body 10, and the lug surface 75 is adapted to engage with similarly angled corners 77 of the blades in the stack 12. In positioning the stack of blades 12, the lug 74-functions in conjunction with a similarly shaped but oppositely facing lug 76 (FIGS. 2 and 10) formed integrally with the forward end wall 18 and with the front side wall 30.

The end closure 14 also serves to strengthen the overall rigidity of the dispenser body 10 and limits inward and outward movement of the front and back

side walls

30, 32 by the upper four corners of the end closure 14 being nested in undercut slots or grooves 132, 134 (FIG. 12) of the

top panels

22, 24, respectively,

with the rear ends of the

longitudinal ribs

44, 46 being positioned in

recesses

81, 82 formed at the upper end of the rear wall 66 of theend closure 14..

With reference to FIGS. 4-6, the blade pusher 16 has I a relatively wide finger-engageable portion 97 and a blade-engaging portion 91. The finger-engageable portion 97 and the blade-engaging portion 91 are interconnected by a longitudinally elongated member 90 which extends through the slot 26. The finger-engageable portion 97 has a narrow transverse undersurface support portion 94 for sliding engagement with the upper surfaces of the top wall 21 as definedby the

horizontal panels

22, 24. The undersurface support portion 94 can be so narrow such that it provides a line contact with the upper surfaces of the top wall 21. The underside of the finger-engageable portion 97 also has beveled

undersurface portions

92, 93 extending forwardly and rearwardly, respectively, from the transverse undersur face support portion 94. The transverse support and beveled

undersurface portions

94, 92, 93 limit the contact surface of the pusher 16 with the top wall 21 to minimize the possibility of the pusher binding with the top wall 21 due to irregularities therein.

As shown in FIG. 12, the sides of the blade-engaging 1 portion 91 are in close contact with the inner surfaces of the

ribs

44,46. Such close contact also serves to strengthen the overall rigidity of the dispenser body 10 I by further limiting inward movement of the front and back

side walls

30, 32. The. blade-engaging portion 91 isdimensioned to extend downwardly beneath the ribs 44, 46 a distance such that the front edge 95 abuttingly engages only the uppermost blade 13 in the stack 12 as I the pusher. 16 is moved forwardly in the slot 26.To' insure that the blade-engaging portion 91 engages only the uppermost blade 13, the end closure 14 has an elongated member 80 extending forwardly from the 7 rear wall 66 which biases the pusher l6 upwardly when the pusher 16 is in the .rearmost portion of the slot 26 as shown in FIG. 1. The rear end 96 of the bladeengaging portion 91 is beveled or curved, and the foragainst the top wall 21. As shown in the figures, the un-.

dersurface support portion 94 can, suitably be located at about one-sixth the length of the pusher 16 from the front end thereof.

Dispensement of the uppermost blade 13 from the stack 12 involves positioning the pusher 16 as shown in FIG. 1 and moving the pusher forwardly through a re-,

cess 130in the front wall 64 of the end closure 14. The

front edge of the blade-engaging portion 91 engages an end of the uppermost blade 13 and moves it through the blade exit slot 48 as shown in FIG. 2 to position the uppermost blade 13 ina razor, head which has been conditioned in a known manner by the cam surfaces 112, 114 formed on the key 50.

As used herein with reference to the

undersurfaces

92, 93, beveled" contemplates both flat and curved surfaces which are out of engagement with the top surfaces of the top wall 21. The dispenser body 10, the end closure 14, and the pusher 16 can be suitably formed of molded acrylonitride butadiene styrene (ABS). Further, the dispenser body and/or the pusher 16 can be formed of a plastic substance having a relatively low coefficient of friction such as Teflon, e.g., polytetrafluoroethylene (FTFE).

What is claimed is:

1. In a safety razor blade dispenser of the type in which the uppermost blade in a stack of blades is adapted to be pushed edgewise into shaving position in a head of an associated razor, the combination comprising:

a horizontally elongated body of molded plastic having top and bottom walls, a pair of side walls extending between said top and bottom walls, and a forward end wall extending between said side walls at one end of said body, the other end of said body being opened between said side walls,

said stack of blades being located within and extending longitudinally of said body,

said forward end wall having a blade exit aperture formed therein,

said top wall including a longitudinal slot formed therein, and a downwardly directed longitudinal extending rib on each side of said slot,

a blade pusher of molded plastic slidable in said slot,

and including (1) a blade-engaging portion below said top wall for engaging the uppermost blade in said stack of blades when said pusher is moved from a rearmost position in said slot forwardly to push the uppermost blade through said blade exit I aperture, and (2) a finger-engageable portion above said top wall,

an end closure member of molded plastic positioned in said opened end of said body, said end closure member comprising a pair of grooves in anrupper rear surface of said end closure member respectively having seated therein a rear portion of each LII one of the downwardly directed ribs, upper portions of said closure member nested between the outer, sides of the downwardly directed ribs and said side walls of said body, and a forwardly ex tending elongated member for biasing said bladeengaging portion upwardly when said pusher is in said rearmost position in said slot, said elongated member being spaced downwardly from said top wall, and

means in said body for biasing said stack of blades upwardly against the downwardly directed ribs to position the uppermost blade in a horizontal plane definedby said exit aperture when said pusher is in said rearmost position in said slot.

2. The dispenser of claim 1 wherein said elongated member is resiliently yieldable when said blade pusher is moved to said rearmost position in said slot.

3. The dispenser of claim 1 wherein said bladeengaging portion has outer side surfaces in continuous abutting sliding engagement with the inner surfaces of the downwardly directed ribs.

4. The dispenser of claim 1 wherein said end closure member comprises a first vertically elongated lug at one forward side thereof, and wherein said body comprises a second vertically elongated lug at a forward inner side thereof opposing said first lug, said first and second lugs maintaining cutting edges of said stack of blades spaced from one of said side walls of said body.

5. The dispenser of claim 1 wherein said body has l a horizontal partition integrally formed therein to divide said body into an upper compartment and a lower compartment, and (2) a port in said bottom wall thereof to provide used razor blade access to said lower compartment; said stack of blades being positioned in said upper compartment, and said biasing means being positioned between said partition and said stack of blades.

6. The dispenser of claim 1 wherein said elongated member and said blade-engaging portion have upper forward and lower rear surfaces, respectively, shaped to guide said blade-engaging portion between said top wall and said elongated member.

Claims

1. In a safety razor blade dispenser of the type in which the uppermost blade in a stack of blades is adapted to be pushed edgewise into shaving position in a head of an associated razor, the combination comprising: a horizontally elongated body of molded plastic having top and bottom walls, a pair of side walls extending between said top and bottom walls, and a forward end wall extending between said side walls at one end of said body, the other end of said body being opened between said side walls, said stack of blades being located within and extending longitudinally of said body, said forward end wall having a blade exit aperture formed therein, said top wall including a longitudinal slot foRmed therein, and a downwardly directed longitudinal extending rib on each side of said slot, a blade pusher of molded plastic slidable in said slot and including (1) a blade-engaging portion below said top wall for engaging the uppermost blade in said stack of blades when said pusher is moved from a rearmost position in said slot forwardly to push the uppermost blade through said blade exit aperture, and (2) a finger-engageable portion above said top wall, an end closure member of molded plastic positioned in said opened end of said body, said end closure member comprising a pair of grooves in an upper rear surface of said end closure member respectively having seated therein a rear portion of each one of the downwardly directed ribs, upper portions of said closure member nested between the outer sides of the downwardly directed ribs and said side walls of said body, and a forwardly extending elongated member for biasing said bladeengaging portion upwardly when said pusher is in said rearmost position in said slot, said elongated member being spaced downwardly from said top wall, and means in said body for biasing said stack of blades upwardly against the downwardly directed ribs to position the uppermost blade in a horizontal plane defined by said exit aperture when said pusher is in said rearmost position in said slot.

3. The dispenser of claim 1 wherein said blade-engaging portion has outer side surfaces in continuous abutting sliding engagement with the inner surfaces of the downwardly directed ribs.

5. The dispenser of claim 1 wherein said body has (1) a horizontal partition integrally formed therein to divide said body into an upper compartment and a lower compartment, and (2) a port in said bottom wall thereof to provide used razor blade access to said lower compartment; said stack of blades being positioned in said upper compartment, and said biasing means being positioned between said partition and said stack of blades.