WO2016201532A1 - Aperfeiçoamentos introduzidos em estilete compacto de segurança - Google Patents
Aperfeiçoamentos introduzidos em estilete compacto de segurança Download PDFInfo
- Publication number
- WO2016201532A1 WO2016201532A1 PCT/BR2015/000091 BR2015000091W WO2016201532A1 WO 2016201532 A1 WO2016201532 A1 WO 2016201532A1 BR 2015000091 W BR2015000091 W BR 2015000091W WO 2016201532 A1 WO2016201532 A1 WO 2016201532A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- blade
- housing
- area
- handle
- holder
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B1/00—Hand knives with adjustable blade; Pocket knives
- B26B1/08—Hand knives with adjustable blade; Pocket knives with sliding blade
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B5/00—Hand knives with one or more detachable blades
- B26B5/001—Hand knives with one or more detachable blades with blades being slid out of handle immediately prior to use
- B26B5/003—Hand knives with one or more detachable blades with blades being slid out of handle immediately prior to use comprising retraction means for the blade or the blade holder
Definitions
- the present invention is concerned with improvements made to the safety compact stylus, more precisely, the trapezoid-type blade-mounted stylet; the blade holder of the innovative stylus is made of a single piece with integrated cursor and the blade is fixed to the slide holder by means of a magnet; The improved features are constructively simplified while maintaining full safety while handling the stylus.
- Occupational safety is known to be the set of technical, educational, medical and psychological measures used to prevent accidents by eliminating unsafe conditions from the environment, whether instructing or convincing people to use preventive practices.
- Said security is a key issue, especially for professionals using cutting tools such as stockists, shopkeepers, packers or other professionals who perform various tasks such as leather cutting, upholstery and carpeting, packaging openings and fast services.
- the knife and stylus market features numerous tool models, ie the most noteworthy in this report are those portable and safety models specially developed for such activities, such as the wide blade stylus used for cutting thick and resistant materials, or narrow-bladed knives used for cutting paper or fragile material.
- conventional safety knives have a larger dimension and are formed by a rubberized handle and whose self-retracting system coupled to the blade allows it to be exposed during cutting and immediately after the operation. , the blade can be manually pulled into the stylus body or automatically retract, protecting the user from accidents during cutting.
- An example of this type of stylus can be viewed in US2010043235 (HAO WEN) or US4635309 (LARSEN) documents.
- a safety stylet model with automatic retractable mechanism can be viewed in the US document ⁇ ⁇ . US 8549755 (STANLEY).
- This document is a compact stylus that includes a sliding blade holder attached to a handle.
- a trapezoidal blade removably mounts to the blade holder by means of a blade closing mechanism.
- a sliding lock mechanism selectively holds the blade holder in its extended or retracted position relative to the handle. When the blade holder is extended, the blade holder and most of the blade advance beyond an extreme point of the handle.
- This self-reengaging manually operated slide blade holder design significantly increases the overall length of the knife so that it remains comfortable during use in the extended position and, when automatically retracted or retracted, the knife remains longitudinally. compact.
- An opening in the front of the handle creates a gap between the blade and the handle to discourage debris on the handle transfer blade when the blade retracts.
- this stylus has complex constructive features mainly by providing a sliding locking mechanism that selectively retains the blade support in position. extended or retracted relative to the handle.
- US 8028420 is a stylus in which the cutting blade attachment and replacement parts are selectively movable in and out of the knife handle through a single rail system.
- the blade is secured by a series of elastic metal parts, one of which contains a projection on a metal guide.
- US 2010/0325899 Relates to a retractable stylus comprising a handle and a blade having an upper edge, a lower edge, a first side edge and a second side edge.
- the stylus has a blade holder with a locking assembly for retaining the blade within the blade holder; the lock assembly is movable between a blade lock position and a blade release position; The lock assembly includes a locking element that engages the first side edge in the blade locking position.
- the stylus in question comprises a main handle formed of two complementary hollow parts, with outer surfaces lined with rubberized material; said handle may contain a housing for a trapezoidal blade holder which slides longitudinally within said handle by actuating a drag slider, in turn subjected to a return spring properly anchored within the handle.
- Said sliding drag of the blade holder housing is mounted on a displacement channel provided on one of the side faces of the handle.
- This channel is provided with limit switches in the form of indentations in the upper and lower channel walls, sized to accommodate small projecting teeth. top and bottom faces of the drag cursor. End-of-stroke cut-outs in the side channel of the slider handle are responsible for positioning the blade holder, ie in retracted or forward position.
- the user simply has to press the drag cursor into the handle by pressing a small, better-defined stop spring later so that the teeth disengage from the rest position in the side channel cutouts, making handling of the blade holder housing safe and practical.
- FIG. 1 Another improvement included in the innovative stylus is the provision of a blade holder, which is formed by a single laminar part with integrated cursor at the top of it.
- This laminar piece is made of plastic and flexible material.
- the upper portion of the laminar part includes said slider and a slender rod-shaped projecting member with an enlarged free end specially sized to slide into a slot formed in the housing upper edge of the blade holder.
- This blade holder incorporates at least one magnet piece, which is ideal for trapezoidal blade attachment, making its perfect positioning effective, as well as making possible blade replacement safe and practical.
- Another improvement concerns the provision of an automatic return spring of the blade holder and consequently of the trapezoidal blade as soon as the user stops pushing the blade holder cursor during cutting use.
- One free end of the return spring engages the blade holder, while the opposite end is anchored in a projected projection on the inner face of the blade holder housing.
- the advantages of the innovative stylus can be related to: - Blade holder configured in one piece;
- the constructivity of the thin rod ensures stability and wide travel of the blade holder and its trapezoidal blade relative to the handle end.
- Figure 1 is an exploded perspective view of the elements that make up the safety stylet now innovated
- Figure 2 shows a perspective view illustrating the mounted blade holder housing and exploded handle portions
- Figure 3 shows an exploded perspective view of a portion of the slide carrier handle and blade holder housing illustrating the resting points of the projecting teeth disposed on the carrier slide;
- Figure 3A shows a cross section of the drag slider assembly on the repose bridge
- Figure 4 illustrates an assembled perspective view of the now innovated stylus
- Figure 4A is a top view of the safety stylus
- Figures 5 and 5A show side views of the stylus devoid of one part of the handle to view the advancement of the blade holder housing
- Figures 6 and 6A show side views of the stylus devoid of one of the handle parts illustrating the blade holder housing, also. devoid of one of the parts for viewing the blade holder advance.
- the present invention relates to "COMPLETE SAFETY STYLE IMPROVEMENTS", more precisely it is a safety stylus (1) of the type used by professionals who use safety tools. cutting for various operations such as opening boxes, leather cuts, upholstery, etc.
- Said stylet (1) is formed by a handle (2) formed by two hollow and complementary parts (2A) and (2B) complementary to each other, whose outer surfaces (2c) provide for rubberized coating.
- Said parts (2A) / (2B) when assembled together constitute a front opening (abl) and a chamber for housing the housing (3) of the support (4) of a trapezoidal blade (LM); said housing (3) also formed by two complementary hollow parts (3A) and (3B) whose dimensioning is reduced in relation to the dimensioning of the handle (2).
- the housing (3) includes on the outer wall (3al) a recessed area (3a2) designed to accommodate a drag slider (5) and its spring ⁇ 8).
- said housing (3) (see figure 1) provides in the same outer wall (3al) of the part (3A) a guide (3a2) configured by an oblong projection sliding on orthogonal wall (2d) disposed on the inner face (2al) of part (2a) which, in turn, provides for an elongated cutout (2a3) from which orthogonal peripheral walls (2a4) develop so as to compose the sliding canat (CD) of the slider (5) ).
- Said channel walls 2a4 have pairs of indentations r1 and r2 disposed near the ends of the channel CD so as to configure the end of stroke pl and p2 of projecting teeth 5a practiced on the drag cursor (5); point (pl) corresponds to the position of the retracted housing (3) inside the handle (2) and point (p2) corresponds to the position of the advanced housing (3) at (y) with respect to the opening (abl) of the handle ( 2).
- the length (x2) (see figure 2) of the slider travel channel (5) defines the feed dimensional (y) (see figures 5 and 5A) of the housing (3) relative to the opening (abl) of the handle (2). ).
- Said trapezoidal blade support (4) (LM) (see Figure 1) is configured in a thin one-piece (4a) and provides for an extreme branch (4f) provided with guide sliding (4fl) sliding (3b2) practiced in the part (3B) of the housing (3).
- Said support (4) (see Figure 1) is divided into three distinct areas, namely: i) blade receiving area (Al) (LM); ii) integrated cursor area (A2); iii) spring (6) anchor area (6) for automatic blade return (LM).
- Said integrated cursor area (A2) is installed in opening (ab2) of the housing (3) and is formed by the combination of indentations practiced on the upper edges of the pieces (3A) / (3B).
- Said blade receiving area (Al) (LM) comprises recess (4c) to form a cradle for mounting at least one magnet (7) configuring a magnetic field for blade attraction (LM) and, consequently, the mounting on the bracket (4).
- the integrated slider area (A2) provided on the blade holder (4) comprises a projecting and flexible cross-member (4b), preferably "T" extending. from the upper face of the single piece (4), the orthogonal portion (4bl) sliding into the opening (ab2), while the outer surface of the flat portion (4b2) provides for multiple indentations.
- Said spring anchor area (A3) (6) (see Figures 6 and 6A) for automatic blade return (LM) is configured by a rotating, inverted "L" shaped tooth (4d) that develops from the flat face of a slender wall (4e) provided in a cut-out in the central portion of the part (4).
- the opposite end (6b) of the spring (6) is engaged with a tooth (3bl) of the part (3B) and arranged at the opposite end to the opening (ab3) of the holder (3) of the blade holder (4).
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Knives (AREA)
- Coating Apparatus (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/BR2015/000091 WO2016201532A1 (pt) | 2015-06-17 | 2015-06-17 | Aperfeiçoamentos introduzidos em estilete compacto de segurança |
US15/736,754 US20180250837A1 (en) | 2015-06-17 | 2015-06-17 | Improvements made to a compact safety cutter |
BR112017026981A BR112017026981A2 (pt) | 2015-06-17 | 2015-06-17 | aperfeiçoamentos introduzidos em estilete compacto de segurança |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/BR2015/000091 WO2016201532A1 (pt) | 2015-06-17 | 2015-06-17 | Aperfeiçoamentos introduzidos em estilete compacto de segurança |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016201532A1 true WO2016201532A1 (pt) | 2016-12-22 |
Family
ID=57544585
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/BR2015/000091 WO2016201532A1 (pt) | 2015-06-17 | 2015-06-17 | Aperfeiçoamentos introduzidos em estilete compacto de segurança |
Country Status (3)
Country | Link |
---|---|
US (1) | US20180250837A1 (pt) |
BR (1) | BR112017026981A2 (pt) |
WO (1) | WO2016201532A1 (pt) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3766648A1 (de) | 2019-07-19 | 2021-01-20 | Wolfcraft GmbH | Sicherheitsmesser |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11076738B2 (en) * | 2018-10-09 | 2021-08-03 | Slice, Inc. | Cutting device |
US11938644B2 (en) * | 2018-10-09 | 2024-03-26 | Slice, Inc. | Cutting device with selectively lockable actuating member |
CN114227766B (zh) * | 2021-11-19 | 2024-05-17 | 宁波市福达啄木鸟刀业有限公司 | 一种美工刀片及其深冷工艺 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3999290A (en) * | 1976-03-15 | 1976-12-28 | Wood Jess W | Safety knife |
US5203085A (en) * | 1992-01-02 | 1993-04-20 | Martor-Argentax E.H. Beermann Kg | Knife |
US6263577B1 (en) * | 1998-10-06 | 2001-07-24 | American Safety Razor | Automatic spring retractable utility knife |
US7316070B2 (en) * | 2005-11-15 | 2008-01-08 | Irwin Industrial Tool Company | Self-retracting utility knife |
US20110232104A1 (en) * | 2010-03-24 | 2011-09-29 | Chun-Feng Ho | Safe utility knife |
US8549755B2 (en) * | 2005-08-02 | 2013-10-08 | Stanley Black & Decker, Inc. | Compact utility knife |
-
2015
- 2015-06-17 BR BR112017026981A patent/BR112017026981A2/pt not_active Application Discontinuation
- 2015-06-17 WO PCT/BR2015/000091 patent/WO2016201532A1/pt active Application Filing
- 2015-06-17 US US15/736,754 patent/US20180250837A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3999290A (en) * | 1976-03-15 | 1976-12-28 | Wood Jess W | Safety knife |
US5203085A (en) * | 1992-01-02 | 1993-04-20 | Martor-Argentax E.H. Beermann Kg | Knife |
US6263577B1 (en) * | 1998-10-06 | 2001-07-24 | American Safety Razor | Automatic spring retractable utility knife |
US8549755B2 (en) * | 2005-08-02 | 2013-10-08 | Stanley Black & Decker, Inc. | Compact utility knife |
US7316070B2 (en) * | 2005-11-15 | 2008-01-08 | Irwin Industrial Tool Company | Self-retracting utility knife |
US20110232104A1 (en) * | 2010-03-24 | 2011-09-29 | Chun-Feng Ho | Safe utility knife |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3766648A1 (de) | 2019-07-19 | 2021-01-20 | Wolfcraft GmbH | Sicherheitsmesser |
Also Published As
Publication number | Publication date |
---|---|
BR112017026981A2 (pt) | 2018-09-04 |
US20180250837A1 (en) | 2018-09-06 |
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