US3134128A

US3134128A - Suction nozzle

Info

Publication number: US3134128A
Application number: US175099A
Authority: US
Inventors: Albert B Campbell
Original assignee: Campbell Products Co
Current assignee: Campbell Products Co
Priority date: 1962-02-23
Filing date: 1962-02-23
Publication date: 1964-05-26
Anticipated expiration: 1981-05-26

Description

May 26, 1964 A. B. CAMPBELL SUCTION NOZZLE Filed Feb. 23, 1962 United States Patent 3,134,128 SUCTION NUZZLE Albert ll. Campbell, len Ellyn, Ill., assignor to Campbell Products Company, Bensenville, Ill., a corporation of Illinois Filed Feb. 23, 1962, Ser. No. 175,699 Claims. (Cl. 15-422) The present invention relates generally to multi-part suction nozzles, and more particularly to a multi-part nozzle for use with a suction-actuated scalp-cleaning apparatus such as that shown in the present inventors application Serial No. 151,337, filed November 9, 1961.

In use the subject nozzle is connected by a conduit to suction-imparting means, and is utilized by a barber or hairdresser to clean the hair and scalp of a person whose hair has just been cut. This eliminates the annoying subsequent accumulation of loose bits of hair, dandruff, etc. on the shoulders and neck of the person whose hair has been cut, and without employing a hair-washing operation. The subject nozzle may also be used advantageously to remove such bits of hair, etc. which fall on the eck and shoulders during cutting.

Because a nozzle of this type is utilized several times daily and because each of the several daily uses is on the scalp of a different person, the nozzle must be thoroughly cleaned, both inside and out, before each use. In order for the nozzle to be thoroughly cleaned in accordance with hygienic standards, all of the surfaces of the nozzle, both inside and out, must be readily accessible to cleaning solutions and equipment.

Accessibility to the interior surfaces of an ordinary one-piece nozzle is difiicult. In the instant invention, the necessary accessibility is provided by constructing the nozzle of several readily divisible parts, all surfaces of which, both inside and out, are readily accessible for cleaning when disassembled.

Because pre-cleaning disassembly and post-cleaning assembly must be performed several times a day, and to prevent the disassembly and assembly operations from consuming too much time, the multi-part nozzle of the present invention is provided with means Which render the nozzle capable of disassembly substantially instantaneously, and capable of assembly almost as fast. The nozzle of the instant invention is constructed so that merely by grasping the nozzle at opposite ends thereof and imparting a slight pulling force, the nozzle will become separated into three discrete parts. The post-cleaning assembly operation, equally as simple and nearly as fast, will be described subsequently.

Other features and advantages are inherent in the structure claimed and disclosed, or will become apparent to those skilled in the art from the following detailed description in conjunction with the accompanying diagrammatic drawings, wherein:

FIGURE 1 is a perspective view illustrating an embodiment of a multi-part suction nozzle, constructed in accordance with the present invention, being used in a scalpcleaning operation;

FIGURE 2 is an enlarged perspective view of the subject nozzle in an assembled condition;

FIGURE 3 is an enlarged, exploded perspective view of the nozzle of FIGURE 2, illustrating the nozzle in a disassembled condition;

FIGURE 4 is a side elevational view, partially broken away and partially in section, of the nozzle of FIG- URES 2 and 3;

FIGURE 5 is a sectional view taken along line 55 in FIGURE 4; and

FIGURE 6 is a sectional view taken along line 66 in FIGURE 2.

Referring initially to FIGURE 1, there is shown an 3,134,128 Patented May 26, 1964 embodiment 10 of a multi-part suction nozzle constructed in accordance with the present invention, and utilized for cleaning the scalp 11 of a person 12. Nozzle 10 is connected by a conduit 13 to suction-imparting means such as that shown in the present inventors application Serial No. 151,337, filed November 9, 1961.

Referring to FIGURES 2 to 6, the subject nozzle is shown to comprise three parts, a pair of wall means 20, 21, engageable to define a hollow interior, and collar means 22. When these three parts are assembled, the nozzle has the configuration illustrated in FIGURE 2. To disassemble the three parts, preparatory to cleaning the interior and exterior of the nozzle, collar means 22 is grasped in one hand, and the two wall means 20, 21 are grasped in the other hand, and the two hands are pulled apart in opposite directions along the longitudinal axis 51 of the nozzle. This results in an instantaneous disassembly into the three separate parts, as illustrated in FIGURE 3.

Collar means 22 is substantially cylindrical in crosssection and terminates at a rearwardly extending narrower portion 45 for connection to conduit 13. Each of the two wall means 20, 21 is substantially identical and includes semi-circular

rear portions

24, 25 respectively, which, when the wall means are assembled, define a nozzle rear portion open at the rear. Each wall means 20, 21 additionally comprises diverging

side surfaces

26, 27 and 28, 29 respectively, said surfaces diverging from the

rear portions

24, 25 of their respective wall means. Also extending from the rear portions of the wall means are sloping

surfaces

30, 31 on wall means 20, 21 respectively. Sloping

surfaces

30, 31 terminate at a plurality of angularly extending

front portions

36, 37 separated by

notches

32, 33 respectively. Notch means 32, 33 and angularly extending

portions

36, 37 cooperate to define suction openings at the forward end of the nozzle when wall means 20, 21 are assembled as shown in FIGURE 2. Each of the wall means 20, 21 includes matching peripheral edge means 34, 35, respectively, each of which engages the other when wall means 20, 21 are assembled.

Located on wall means 21 at opposite ends of notches 33 are pin means 40a and socket means 41a; and located on wall means 20 at opposite ends of notches 32 are pin means 40 for reception Within socket means 41a and socket means (not shown) for receiving pin means 40a when the wall means 20, 21 are assembled. The pin and socket means prevent movement of engaged wall means 20, 21 in the direction of the longitudinal axis of the nozzle, as well as in a direction transverse to both the longitudinal axis of the nozzle and the axis of the pin means. Collar means 22 peripherally engages the semicircular tubular

rear portions

24, 25 or both wall means 20, 21 when the latter two are engaged, and prevents movement of the engaged wall means in a direction transverse to the longitudinal axis of the nozzle.

To further facilitate accessibility to the interior surface portions of the nozzle, wall means 20, 21 are each provided with a cross-section, taken transverse to the longitudinal axis of the nozzle and at any location along the respective wall means, which is less than the complete cross-section of the assembled nozzle taken at the same location. This feature is provided because merely making the nozzle out of several divisible parts will not, alone, facilitate access to interior surface portions of the nozzle if the divisible part has a cross-section the same as the entire cross-section of the nozzle, and if this cross-section is relatively narrow in any given direction. For example, the cross-section of the assembled nozzle adjacent the suction openings is relatively narrow in the direction of the arrow 50 in FIGURE 2, and access to the interior surface portions of the assembled nozzle at this location is difficult. On the other hand, access at this same location,

to a divisible part (e.g. wall means 20 or 21) having a cross-section less than that of the assembled nozzle, is relatively easy.

When the nozzle is in the assembled condition shown in FIGURE 2, it comprises a diverging first pair of sides defined by wall means

surfaces

26, 28 and 27, 29; a converging second pair of sides defined by wall means

surfaces

30, 31; a substantially tubular rear portion defined by wall means

portions

24, 25; and frontal suction openings defined by

notches

32, 33 and depending

portions

36, 37. Each pin means and each socket means is located adjacent the most divergent portion of a respective one of said first pair of sides, and adjacent the most convergent portion of a respective one of said second pair of sides.

The wall means is relatively thick at the locations of the pin means and the socket means and is substantially thinner along the entire remainder of the wall means in comparison to the thickness at the locations of the pin means and the socket means.

All

parts

20, 21 and 22 of nozzle 10 may be composed of a non-rusting metallic material (e.g. stainless or plated steel) or of synthetic resin such as extrusion molded thermoplastic resins exemplified by Lucite (a methyl methacrylate polymer made by E. I. du Pont de Nemours and Company, Wilmington, Delaware), nylon (a longchain synthetic polymeric amide having recurring amide groups as an integral part of the main polymer chain), and Styron 475 (a high impact polystyrene made by Dow Chemical Company, Midland, Michigan); these specific resins are capable of being cleaned in 30% formaldehyde without adverse effects.

Following a scalp-cleaning operation, the nozzle 10 is readily disassembled by pulling collar means 22 and wall means 20, 21 apart in opposite directions. Each of the three separate discrete parts is then washed, all of the surfaces of each part, both inside and out, being readily accessible for cleaning. The three parts are then readily assembled merely by engaging the pins 40 in the sockets 41 and slipping collar 22 over the engaging tubular semicircular

rear portions

24, 25. Thus the disassembly operation is substantially instantaneous, and the assembly operation is nearly as fast.

The foregoing detailed description has been given for clearness of understanding only, and no unnecessary limitations should be understood therefrom, as modifications will be obvious to those skilled in the art.

What is claimed is:

1. A three-part suction nozzle comprising:

first and second Wall means engageable to define a hollow interior; each of said wall means having a cross-section, transverse to the longitudinal axis of the nozzle, less than the cross-section of the nozzle at the same location;

said wall means, when engaged, defining a substantially tubular nozzle rear portion open at the rear;

means for preventing movement of said engaged wall means in all directions transverse to the longitudinal axis of the nozzle and consisting essentially of collar means slidably engaging the periphery of said nozzle rear portion;

said wall means, when engaged, defining at least one suction opening at the forward end of the nozzle; pin means at the forward end of one of the Wall means and to one side of said suction opening; socket means on the other wall means for receiving said pin means, when the wall means are engaged, and for preventing movement of the engaged wall means in the direction of the longitudinal axis of the nozzle;

said wall means being relatively thick at the locations of said pin means and said socket means and being substantially thinner along the entire remainder thereof in comparison to the thickness at said locations of the pin means and the socket means;

and means for connecting said nozzle to a conduit.

2. A three-part suction nozzle for a suction-actuated scalp-cleaning apparatus, said nozzle comprising:

first and second Wall means engageable to define a hollow interior;

each of said wall means having a cross-section, taken transverse to the longitudinal axis of the nozzle and at any location along the wall means, less than the cross-section of the nozzle at the same location;

each of said wall means having peripheral edge means engageable with peripheral edge means on the other wall means;

said wall means including means for defining a substantially tubular nozzle rear portion open at the rear, when the Wall means are engaged;

said wall means including means for defining suction opening means at the forward end of the nozzle, when the wall means are engaged;

pin means and socket means at the forward end of one of the wall means and at opposite sides of said suction opening means;

socket means and pin means on the other wall means each for engaging a respective one of said pin means and socket means on the one wall means, when the wall means are engaged, and for preventing movement of the engaged wall means in the direction of the longitudinal axis of the nozzle;

said engaged wall means defining a nozzle portion, integral with said nozzle rear portion, and having a diverging first pair of sides and a converging second pair of sides;

each of said pin means and each of said socket means being located adjacent the most divergent portion of a respective one of said first pair of sides, and adjacent the most convergent portion of a respective one of said second pair of sides;

said wall means being relatively thick at the locations of said pin means and said socket means and being substantially thinner along the entire remainder thereof in comparison to the thickness thereof at said locations of the pin means and the socket means;

and means for connecting said nozzle to a conduit.

3. A three-part suction nozzle comprising:

first and second wall means engageable to define a hollow interior;

the rear portions of said wall means, when engaged, de-

fining a substantially tubular nozzle rear portion open at the rear;

the front portions of said wall means, when engaged, defining notched suction openings at the forward end of the nozzle;

pin means and socket means at the forward end of one of the wall means and at opposite sides of said notched suction openings;

socket means and pin means on the other wall means each for engaging a respective one of said pin means and socket means on the one wall means, when the wall means are engaged, and for preventing movement of the engaged wall means in the direction of the longitudinal axis of the nozzle, and in a direction transverse to both said nozzle axis and the axis of said pins;

each of said wall means comprising a pair of diverging surfaces extending from the rear portion of the wall means and defined by said peripheral edge means on one side and by a sloping surface, extending between said diverging surfaces, on the other side;

said sloping surface extending from said rear portion of the wall means and terminating at said notched suction openings;

and means for connecting said nozzle to a conduit.

4. A suction nozzle comprising:

first and second wall means engageable to define a hollow interior;

each of said wall means having a cross-section, transverse to the longitudinal axis of the nozzle, less than the cross-section of the nozzle at the same location;

collar means engaging the periphery of said nozzle rear portion to prevent movement of said engaged wall means in a direction transverse to the longitudinal axis of the nozzle;

said wall means, when engaged, defining at least one suction opening at the forward end of the nozzle;

pin means on one of the wall means, forwardly of the nozzle rear portion;

socket means on the other wall means for receiving said pin means, when the wall means are engaged, and for preventing movement of the engaged wall means in the direction of the longitudinal axis of the nozzle;

said wall means being relatively thick at the location of said pin means and said socket means and being substantially thinner along the entire remainder thereof in comparison to the thickness of the wall means at said locations of the pin means and the socket means.

5. A suction nozzle as recited in claim 4 wherein said pin means is located at the forward end of said one 20 wall means.

References Cited in the file of this patent UNITED STATES PATENTS

Claims

4. A SUCTION NOZZLE COMPRISING: FIRST AND SECOND WALL MEANS ENGAGEABLE TO DEFINE A HOLLOW INTERIOR; EACH OF SAID WALL MEANS HAVING A CROSS-SECTION, TRANSVERSE TO THE LONGITUDINAL AXIS OF THE NOZZLE, LESS THAN THE CROSS-SECTION OF THE NOZZLE AT THE SAME LOCATION; SAID WALL MEANS, WHEN ENGAGED, DEFINING A SUBSTANTIALLY TUBULAR NOZZLE REAR PORTION OPEN AT THE REAR; COLLAR MEANS ENGAGING THE PERIPHERY OF SAID NOZZLE REAR PORTION TO PREVENT MOVEMENT OF SAID ENGAGED WALL MEANS IN A DIRECTION TRANSVERSE TO THE LONGITUDINAL AXIS OF THE NOZZLE; SAID WALL MEANS, WHEN ENGAGED, DEFINING AT LEAST ONE SUCTION OPENING AT THE FORWARD END OF THE NOZZLE; PIN MEANS ON ONE OF THE WALL MEANS, FORWARDLY OF THE NOZZLE REAR PORTION; SOCKET MEANS ON THE OTHER WALL MEANS FOR RECEIVING SAID PIN MEANS, WHEN THE WALL MEANS ARE ENGAGED, AND FOR PREVENTING MOVEMENT OF THE ENGAGED WALL MEANS IN THE DIRECTION OF THE LONGITUDINAL AXIS OF THE NOZZLE; SAID WALL MEANS BEING RELATIVELY THICK AT THE LOCATION OF SAID PIN MEANS AND SAID SOCKET MEANS AND BEING SUBSTANTIALLY THINNER ALONG THE ENTIRE REMAINDER THEREOF IN COMPARISON TO THE THICKNESS OF THE WALL MEANS AT SAID LOCATIONS OF THE PIN MEANS AND THE SOCKET MEANS.