Monolythic cap for writing implements equipped with two groups of protected ducts towards the outside to allow the passage of air through the cap

Abstract: A cap for writing implements comprises a hollow lower body (10) jointed at one end to a hollow upper body (12), ending on top (13) with a closed end having a smaller section; openings (C, C') for the communication of the lower inner hollow body with the outside are obtained in correspondence with the jointed length; said openings alternate to sides extending from said jointed length, which are substantially parallel to the hollow upper body to form ducts (C) stretching out towards said closed end where further communication openings are realized between the inner lower hollow body and the outside.

Description: The invention refers to a monolythic cap for writing implements equipped with two groups of ducts protected towards the outside, able to allow the passage of air through said cap. Caps for writing implements such as pens, felt tip pens and similar that carry ducts and/or holes to allow the passage from the inside to the outside of their body are already on the market. In case the cap is accidentally swollen and stops in the pharynx, the holes and/or ducts allow the victim of accident to brethe sufficient air until the intervention of a physician who will remove the cap from the pharynx, or perform a tracheotomy if it is impossible to remove the cap easily and immediately. The caps found on the market at the moment offer some safety systems; however, the air passage openings are obtained only in the midway outer part of the cap, as in the GB-A-2174374, or on the closed upper end, as in the JP-Y2-6111016. In this way, the inconveniences are two; the total area for the air passage through the openings is insufficient for the desired safety; as the openings are only found on a certain lenght of the cap, the air passage would become insufficient to ensure the desired safety if on said lenght the trachea sides should adhere, or if some substances should accumulate and occlude the openings even only partially. Purpose of the invention is to avoid the above inconveniences proposing a cap equipped with two groups of ducts and openings arranged in two different points of the cap increasing air passage area through the cap, and this area is thus sufficient to ensure the safety effect also in case a group of ducts, or part thereof, be accidentally occluded. For these and other purposes which will be better appreciated as the description follows, the invention proposes a cap for writing implements consisting in a lower and an upper cylindrical body with different sections, jointed by a collar and closed at one end, of the type having openings or ducts to allow the passage of air, in case the cap is accidentally swollen, from the inside to the outside of the cylindrical bodies, characterized in that said ducts are divided in two groups, the first one of which has outlets on the outer surface of the cap and the second one has outlets near the end of the cap. The cap of the invention is now being described and reference is made to the attached drawings: Fig. 1 is the plan view from top of the cap of the invention; Fig. 2 and 3 are respectively the views according to arrows A and B of the cap of Fig. 1; Fig. 4 and 5 are respectively sections according to marks IV-IV-and V-V of the cap of Fig. 1. The cap of the invention consists of a cylindrical lower hollow body 10 jointed, in correspondence with a collar 11, to a second cylindrical body 12 having a smaller section of the first one and being closed on top at 13; a chamber is thus realized in the cylindrical body 12, forming tightness at the bottom with the point of the writing implement to avoid evaporation of the solvent of the writing substance or the drying up of said substance. Four tongues 14 are radially extended from the upper body combining it to two arched sides 15 diametrically opposed to each other and integral to the collar 11 thus realizing the wholeness of the cap. As illustrated in the drawings, the sides 15 extend in parallel to the surface of the upper body 12 nearly up to the closed end 13. Two ducts C are formed in this way between the outer surface of the upper body 12 and the sides 15; said ducts are diametrically opposed to each other and have the task of putting in communication the inside of the body 10 with the outside near the end 13 of the cap, as indicated by the arrows of Fig. 4. Each of said ducts C will have an angular extension of about 110 degrees, as illustrated in Fig. 1. Two other ducts C' will be formed in correspondence with collar 11; they are also diametrically opposed to each other and interposed between the previously mentioned ones; they have the task of putting in communication the inside of the body 10 with the outside near said collar as indicated by the arrows of Fig. 5. These latter ducts will have an angular extension of about 70 degrees each, as illustrated in Fig. 1, so that the entire surface of the cap will have air openings, even on different planes, between its inner part and the outside. The design of the openings allows the greatest possible surface area for the air passage through the cap, such area being absolutely greater than the one found in any other cap on the market at the moment. Should a pair of said ducts be for any reason occluded, the other pair would ensure sufficient air breathing for the survival of the patient until the physician's intervention, as the openings are positioned on two different lengths of the cap. The above described cap illustrated in the attached drawings may have any shape and dimension, and the clip 16 may or may not be assembled on it, and nothing will vary as regards the safeguard of the invention as represented by the following claims.

Claims: Cap for writing implements consisting in a lower and an upper cylindrical body (10,12) with different sections, jointed by a collar (11) and closed at one end (13), of the type having openings or ducts to allow the passage of air, in case the cap is accidentally swollen, from the inside to the outside of the cylindrical bodies (10,12), characterized in that said ducts (C',C) are divided in two groups, the first one of which has outlets on the outer surface (10,12) of the cap and the second one has outlets near the end (13) of the cap. Cap according to claim 1 characterized in that the first group of ducts (C') are two ducts formed in the collar (11). Cap according to claim 1 characterized in that the second group of ducts (C) are two ducts formed between the outer surface of said upper cylindrical body (12), two diametrically opposed arched sides (15) integral to the collar (11) and four radial tongues (14); said ducts (C) being parallel to the surface of the upper body (12) nearly up to the closed end (13). Cap according to claim 1 characterized in that the ducts (C',C) of the first and second group are alternately disposed. Cap according to claim 1 characterized in that the ducts (C',C) of the first and second group are disposed around the cap so as to substantially cover 360 degrees of the perimeter of the cap. Cap according to claim 5 characterized in that each first duct (C') obtained in correspondance of collar (11) extends for an arc of circle of about 70 degrees whilst each second duct (C) alternating to said first duct (C') extends for an arc of circle of about 110 degrees.

Inventors: BELMONDO DOMENICO, BELMONDO, DOMENICO
Applicants: DOBELL SPA, DOBELL S.P.A.
Application year: 1990
Main classification: B43K9
IPC codes: B43K23