JPH03500629A - letter opener - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] letter opener Various embodiments of letter openers are known. Use in the office or on a desk A relatively large dagger-style letter opening device is known for this purpose. Recently, I have been using To prevent injury to persons, the blade is partially covered by the grip. Small, flat letter openers with rounded tips also became known. It also takes However, such devices are not suitable for carrying in a pocket. other , some appliances that have recently appeared on the market are made as lockable appliances. It slides sideways. It has a slit, into which a sharp blade protrudes at right angles. To open it, Hold the instrument with its flat side perpendicular to the letter to cut the narrow edge of the letter envelope. - Must be moved along the sealing top lid. This makes handling the equipment inconvenient. Not only that, but there is a danger that part of the contents of the letter may be cut off.

Furthermore, this only comes into play at a certain letter thickness, and to a certain extent It only works up to the paper thickness.

The present invention allows all types of letters to be opened easily and without danger, and Do not hold the product in your hand with good ergonomics, and do not pose a risk of personal injury, property damage, or injury. To provide a letter opening device that is as small as possible and can be used without any hassle. Zara In its readily available form, it can be worn as a simple trinket or on a chain. It is possible to carry it with you.

The present invention solves the above problem by providing an opening element that is arranged in a straight line or in an arc on both sides of the opening part. two legs extending toward the free end and adapted to act as grippers are attached to the terminal part; This problem is solved by a letter opening device that is characterized by the following features:

Other advantageous embodiments are described in the dependent claims.

Several embodiments of the invention are shown in the drawings and will be explained in detail below.

Figure 1 is a perspective view of the letter opening device in use, and Figure 2 is a perspective view of the letter opening device in use. , a front view; FIG. 3 is a three-sided view of a letter opener with a heart-shaped gripping element; Figure 4 is a three-sided view of a letter opener similar to the one in Figure 3, and Figure 5 is the same as in Figure 4. Three views of a letter opener with a tongue resembling a Figure 6 shows a letter opener similar to that in Figure 3, but with a different cutting section; FIG. 7 shows a hand with a heart-shaped gripping element and two intersecting slits; paper opening device, Figures 9a-9g show several types of openings themselves.

In the present invention, a letter opening device does not necessarily have to be sharp and pointed. It starts from the recognition that In other words, the existing blades for letter opening devices are dull. Even if this happens, it will undoubtedly carry out its function.

Used to open letters while swinging a blunt knife in a very comfortable way If there was no possibility that the sharp blade would deftly cut through the paper, In contrast, a dull knife will cause many inconveniences. Therefore, in the present invention The gripping element has two legs that extend into the opening space-savingly. the Therefore, the grasping point of the servant's hand is positioned exactly next to the grasping point of the opening section where the letter should be opened. Placement, pulling, cutting or rocking movements are carried out without difficulty. Furthermore, the opening part is In your hand, the ideal position and angle for opening a letter envelope is inevitable. Be in position.

1 and 2 show a slit 2 and a blunt blade held at one end in the gripping element 1 Fig. 3 shows a substantially square gripping element 1 having 3 . Blade 3 has gaps 2 on both sides of the blade. 1 is held at the center of the slit 2 so that it exists. The front has a free end. A cutting blade 3 protrudes slightly from the gripping element, and on the back side there is another, perforated blade 3. The end projects from the gripping element 1 and forms a hole 36 7 . Relatively deep slit 2 Along the two legs 11 of the gripping element 1 extend.

Furthermore, the legs are adjusted so that the width of the side surface 22 facing the opening part 3 is wider than the width of the blade 3. The thickness of the material is determined to prevent injury to the user. There is. The thickness D of the gripping element 1 is also greater than the width of the blade 3. this thing The blade is sharp on one or both sides as shown in Figures 9f and 9g. This is especially important if you are being exploited.

FIG. 1 shows the operation of inserting the opening device of the present invention under the top cover of letter B. . Upon insertion of the blade 3, the blade is moved longitudinally approximately parallel to the edge of the top lid.

The length of the letter is considerably longer than the length of the letter opener, so the letter opener will have a slight arrow after insertion. It is tilted in the direction of mark X. In this way, despite the small size of the letter opener, Regardless of the size, the arbitrarily large letter opener is comfortable due to the pushing and undulating movements. It will be opened on.

Figures 3 and 4 show an ergonomically advantageous /1-shaped configuration of the gripping element. Ru. In the embodiment shown in FIG. 3, the notebook shape 1' is large and the heart shape shown in FIG. The inside of configuration 1' has been removed so that the slit 2 expands inward at 23. It's big.

The letter opener shown in FIG. It can be used as a member to prevent the paper from flying out when moving, or if the paper happens to be blocked by a dam. It serves as a corner to tear the paper when it is broken.

The letter opener of Figure 4 has sharp edges arranged to form a tearing blade on one side. It has a cutting edge 34. This cutting edge 34 resists contact with bare hands. On the one hand, it is possible to narrow the slit between the legs 11 of the gripping element 1' on the side of the cutting blade. Alternatively, or separately, an additional bridge 40 may be provided which acts as a contact preventer 40. protected by.

FIG. 5 shows a modification of FIG. Here, instead of a bridge, a tongue extends over the cutting edge is used to protect against injury. The slit 2 between the legs 11 of the gripping element 1 If the letter is thick, the paper of the letter envelope may get caught in slit 2. There may be a risk of movement. To prevent this danger, as shown in Figure 5, It is possible to form the cross section of slit 2 in a V-shape and make it wider on the side facing the cutting edge. It is Noh. In this way, even if the envelope is thick, the edge to be opened will fit into slit 2. can be Furthermore, the hand can be approached from below to the blade 3, Or it can clear paper jams that may occur.

FIG. 6 shows a letter opener made similar to the letter opener of FIG. death The opening part is made of a metal piece bent 180 degrees in the vertical direction, and the metal piece is It projects rearwardly from the gripping element and extends forwardly and diagonally into the slit.

The opening forms a large hanging ring.

FIG. 7 shows a letter opener with two slits 2 and 2' extending at right angles to each other. Of the two slits, only slit 2' is used for opening the letter.

The slit 2 has a closed wall on one side, as seen in the right-hand view of FIG. or may be removed altogether.

Finally, Figure 8 shows a letter opener resembling a pocket knife. Equipped with 3 blades The opened part that has been opened is laterally covered by both legs 11, and its cut edge is It is covered by the tongue 41.

As mentioned above, even if the opening part is dull, it is sufficient to open most letters. The opening can also be made from steel wire 35, as shown in FIG. 9a. that time A hole 36 is formed in one end of the wire and both ends of the wire are embedded in the material of the gripping element. It will be done. Figure 9b shows a steel blade 33 suitable for the letter opener of Figure 4. , the nuclear force is provided with a cutting edge 34 and also has teeth. Figures 9°, 9d, and 9e are Figure 3 shows another embodiment of an opening made from wire. The wire is made from steel and The cross-sectional shape of may be round or square.

Synthetic materials are a problem for the material of the grip. The side of the line for tearing is wavy You can also do this.

Figures 9f and 9g show an opening in the form of a blade with a sharp cutting edge, but only The cutting edge begins only behind the blade end 37, which protrudes from the slit.

The terminal 37 protruding from the slit has a round shape. The blade in Figure 9f is on one side. On the sides only, the blade of FIG. 9g has cutting edges 38 on both sides. After tip 37 At the bottom, a recess 38 is provided which forms a kind of tearing tooth. embedded in the gripping element The inserted portions are indicated by hatching in Figures 9a-9g.

Both of these blades or openings are attached to each of the gripping elements shown. It is clear that you get The gripping element extends in the direction of the free end of the opening portion to The external shape of the gripping element is as long as it has two legs that at least partially protect the , of course, without any restrictions. Since the letter opening device of the present invention is made small, Submission of translation of written amendment (Article 184-7, Paragraph 1 of the Patent Act) Yoshi, Commissioner of the Patent Office 1) Takeshi Moon 1. Indication of patent application: PCT/Cl-189100121, title of invention, paper Opening container 3. Patent applicant Name Steinmetz Ursula 4. Agent Address: 3-3-1 Marunouchi, Chiyoda-ku, Tokyo Telephone: (211) 8741 The scope of the claims ■ a letter opener with an opening in the form of a knife blade fixed at one end to the gripping element; and the gripping element (1) is of a plate-like formation extending at right angles to the knife blade (3). The formation has the shape of an object, and the formation extends in the direction in which the knife blade extends on both sides of the knife blade. It has an extending slit, and the thickness of the plate-like formation is equal to that of the knife blade. is larger than the height and is therefore prevented from touching the knife blade. Characteristic letter opening device.

2. At least one side of the unsealing part (3) Claim 1, characterized in that the area is formed in a wavy shape. letter opener.

3. The unsealing part (3) has at least a partial area on at least one surface thereof. with a sharp cutting edge located entirely in the area between the legs of the gripping element (1). A letter opening device according to claim 1 or 2, characterized in that:

4. At least the upper edge of the opening part (3) has teeth (39) or recesses (3B'). Any one of claims 1 to 3, characterized in that Letter opening device as described.

5. Said two legs (11) of the fabrication element (1) surround the gap (2), said gap ( 2) in the region of the sharp cutting edge (38) of the opening (3), the cutting edge (38) characterized in that it is narrowed to prevent contact with bare hands. Letter opening device described in item 4 of the scope of request.

6. At least in the area of the cutting edge (38) of said gripping element (1), a contact preventer (4 0,41) is provided, as set forth in claim 4. Opener.

7. A claim characterized in that the opening part (3) has a hole (36) on the grip side. The letter opening device according to any one of items 1 to 6.

international investigation report international search report

Claims (1)

[Claims] 1. a letter opener having an opening held at one end by a gripping element, said gripping element; The element (1) is arranged on both sides of the opening part (3) in a straight line or in an arc toward the free end. The end portion is provided with two legs (11) which extend to and act as a gripper and a contact preventer. A letter opening device that is characterized by the fact that 2. The opening part (3) has a rod-like, plate-like, or arcuate blunt end (37). The letter opening device according to claim 1, characterized in that the letter opening device is formed by: 3. The opening portion (3) has at least a partial area on at least one side thereof. Claim 1 or 2, characterized in that the invention is curved in a wavy manner. The letter opening device described in . 4. The opening portion (3) has at least a partial area on at least one side thereof. with a sharp cutting edge located entirely in the area between the legs of the gripping element (1). According to any one of claims 1 to 3, the claim is characterized in that: A letter opening device. 5. At least the upper edge of said opening (3) has teeth (39) or recesses (38'). Any one of claims 1 to 4, characterized in that Letter opening device as described. 6. Said two legs (11) of the gripping element (1) form a slit (2), which In the region of the sharp cutting edge (38) of the opening (3), the slit (2) (38) is characterized by being narrowed to prevent contact with bare hands A letter opening device according to claim 4. 7. At least in the area of the cutting edge (38) of said gripping element (1), a contact preventer (4) is provided. 0, 41) as set forth in claim 4. Opener. 8. characterized in that the opening part is led in an arcuate manner (42) to the gripping element. A letter opening device according to any one of claims 1 to 7. 9. A claim characterized in that the opening part (3) has a hole (36) on the grip side. The letter opening device according to any one of items 1 to 7.