WO1990004525A1 - Letter opener - Google Patents
Letter opener Download PDFInfo
- Publication number
- WO1990004525A1 WO1990004525A1 PCT/NL1989/000075 NL8900075W WO9004525A1 WO 1990004525 A1 WO1990004525 A1 WO 1990004525A1 NL 8900075 W NL8900075 W NL 8900075W WO 9004525 A1 WO9004525 A1 WO 9004525A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fold
- cutter
- letter opener
- cutting edge
- envelope
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43M—BUREAU ACCESSORIES NOT OTHERWISE PROVIDED FOR
- B43M7/00—Devices for opening envelopes
- B43M7/002—Hand tools
Definitions
- the invention concerns a letter opener which is capable of opening the envelope of a letter by cutting through the fold of the flap.
- the dimensions are such that the appliance is easily to be hold in the hand.
- the envelope is lead through a slot between two resilient fingers to a slanting cutting edge which causes the point of the cutter to reach under the flap and when the envelope is moved further on the fold will be cut open.
- One of the objects of the invention is the possibility to carry the appliance in one's pocket. Therefore is it absolutely necessary that the cutter cannot in one way or another damage the dress of the bearer.
- the purpose of the invention is to provide an appliance that is capable to open envelopes of letters and safely can be carried in a pocket.
- the letter opener will be manufactured preferably from a syntetic resin.
- Figure 1 shows the front of the letter opener.
- Figure 2 shows the side
- Figure 3 shows in perspective the two halves when opened.
- Figure 4 shows the cutter
- the appliance is composed of two halves (1), (2), which are connected with a thin flexible strip (3). This is specially important when the appliance has to be printed with advertisements where the position in the apropriate place (4) is of vital importance.
- the two halves (1), (2) are firmly connected by folding them to each other when the snapping elements (5) are pressed into the openings (6) provided for these.
- the cutter (9) is provided with an aproximately triangular opening (10) and a cutting edge (11).
- h ⁇ usinghalf (1) is a
- protrusion (12) which fits into the opening (10) of cutter (9).
- the protrusion (12) fits in recession (13) of housinghalf (2).
- both housinghalves (1), (2) are two slanted grooves (14), (15) provided. These grooves (14), (15) run parallel with the cutting edge (11) of the cutter and keep the cutting edge (11) completely free from the housinghalves (1), (2). In this way is clogging with paper fibres or other iniquities between the cutter (9) and the housinghalves (1), (2) prevented. Dust and the like are simply blown away.
- the inserting of the envelope takes place at the insert that is formed by the recessions (16), (17). These recessions (16), (17) reaches the other end of the housing with some interruptions.
- the cutter (9) reaches into this groove (16), (17).
- Both the housinghalves (1), (2) are provided with resilient fingers (18), (19). Vhen relaxed these take the position (18') and (19').
- the resilient fingers (18), (19) reach beyond the point (20) of the cutter (9). Vhen an envelope is moved through the groove (16), (17) the elastic fingers (18), (19) will guide the envelope to the cutter (9) in such a way that the point (20) slides under the flap of the envelope and when the envelope is drawn further it will be cut open.
- the slanted cutting edge (11) will cause opening of the envelope along the whole length.
- a symbol (21) indicates the operation.
- housinghalves (1), (2) is for an opening provided which makes the appliance useful as key-ring indicator.
Landscapes
- Knives (AREA)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL8802638A NL8802638A (nl) | 1988-10-22 | 1988-10-22 | Een handzaam apparaat in zakformaat (60 x 25 x 6 mm) dienend om normale enveloppen te openen zonder beschadiging en zonder afval. |
NL8802638 | 1988-10-22 | ||
NL8802956A NL192567C (nl) | 1988-10-22 | 1988-11-30 | Papiersnijder. |
NL8802956 | 1988-11-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1990004525A1 true WO1990004525A1 (en) | 1990-05-03 |
Family
ID=26646439
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/NL1989/000075 WO1990004525A1 (en) | 1988-10-22 | 1989-10-11 | Letter opener |
Country Status (2)
Country | Link |
---|---|
NL (1) | NL192567C (nl) |
WO (1) | WO1990004525A1 (nl) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5115568A (en) * | 1991-08-12 | 1992-05-26 | Midori Co., Ltd. | Cutter for cutting the folded edge of folded paper sheets or the like |
WO1996004145A1 (en) * | 1994-08-02 | 1996-02-15 | Ari Lindberg | Paper knife |
US20110162215A1 (en) * | 2010-01-01 | 2011-07-07 | Hsiu-Man Yu Chen | Letter opener |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH174365A (de) * | 1934-01-23 | 1935-01-15 | F E Dr Med Stupnicki | Brieföffner. |
US3068569A (en) * | 1961-08-29 | 1962-12-18 | Jr Ernest Calvin Campbell | Letter opener |
US3383768A (en) * | 1966-07-11 | 1968-05-21 | Glen V. Hamilton | Letter opener |
FR2133700A1 (nl) * | 1971-04-16 | 1972-12-01 | Universal Spa | |
FR2226288A2 (fr) * | 1972-10-25 | 1974-11-15 | Kurceba Joseph | Ouvre-lettres |
-
1988
- 1988-11-30 NL NL8802956A patent/NL192567C/nl not_active IP Right Cessation
-
1989
- 1989-10-11 WO PCT/NL1989/000075 patent/WO1990004525A1/en unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH174365A (de) * | 1934-01-23 | 1935-01-15 | F E Dr Med Stupnicki | Brieföffner. |
US3068569A (en) * | 1961-08-29 | 1962-12-18 | Jr Ernest Calvin Campbell | Letter opener |
US3383768A (en) * | 1966-07-11 | 1968-05-21 | Glen V. Hamilton | Letter opener |
FR2133700A1 (nl) * | 1971-04-16 | 1972-12-01 | Universal Spa | |
FR2226288A2 (fr) * | 1972-10-25 | 1974-11-15 | Kurceba Joseph | Ouvre-lettres |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5115568A (en) * | 1991-08-12 | 1992-05-26 | Midori Co., Ltd. | Cutter for cutting the folded edge of folded paper sheets or the like |
FR2680342A1 (fr) * | 1991-08-12 | 1993-02-19 | Midori Co Ltd | Coupoir pour couper le bord plie de feuilles pliees de papier ou similaire. |
WO1996004145A1 (en) * | 1994-08-02 | 1996-02-15 | Ari Lindberg | Paper knife |
US5809656A (en) * | 1994-08-02 | 1998-09-22 | Lindberg; Ari | Paper knife |
US20110162215A1 (en) * | 2010-01-01 | 2011-07-07 | Hsiu-Man Yu Chen | Letter opener |
Also Published As
Publication number | Publication date |
---|---|
NL192567C (nl) | 1997-10-03 |
NL8802956A (nl) | 1990-05-16 |
NL192567B (nl) | 1997-06-02 |
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