EP0543199A1 - Safety scissors - Google Patents
Safety scissors Download PDFInfo
- Publication number
- EP0543199A1 EP0543199A1 EP92118680A EP92118680A EP0543199A1 EP 0543199 A1 EP0543199 A1 EP 0543199A1 EP 92118680 A EP92118680 A EP 92118680A EP 92118680 A EP92118680 A EP 92118680A EP 0543199 A1 EP0543199 A1 EP 0543199A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cutting
- scissors
- scissor blades
- cutting edges
- protrusions
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B13/00—Hand shears; Scissors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B13/00—Hand shears; Scissors
- B26B13/06—Hand shears; Scissors characterised by the shape of the blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B29/00—Guards or sheaths or guides for hand cutting tools; Arrangements for guiding hand cutting tools
- B26B29/04—Guards or sheaths for scissors, e.g. combined with manicuring appliances
Definitions
- the invention relates to safety scissors used to cut synthetic fibers.
- the invention is directed to scissors having non-cutting protrusions separating cutting edges, whereby the protrusions are spaced to prevent foreign objects such as fingers from coming into contact with the nip of the cutting edges.
- scissors Numerous types include projections extending from the cutting edge but providing teeth-like gaps as shown in U.S. Patent No. 4,170,064 and 4,660,285. Thinning scissors with two serrated cutting edges are already known and shown in German Patent Specification No. 932,476. In these at least one scissor blade has around cutting edge at the bottom of each of the gashes. It is also known for scissors to have serrated cutting edge of the scissor blade made corrugated for use in hair trimming.
- the object of the invention is based to design safety scissors of the generic type eliminating a safety hazard for the user.
- the scissors comprise
- the protrusions of the first and second scissor blades are spaced to prevent foreign objects such as fingers to enter into the area of the cutting edges. Such an advantage is useful in cutting strands of synthetic fibers.
- FIG. 1 is a front elevation view of closed cutting scissors according to the invention
- Fig. 2 is a rear elevational view of the opened scissors
- Fig. 3 is a sectional view of enlarged scale taken on the line 3-3 of Fig. 1.
- the scissors 10 include a first scissor half 11 with a scissor blade 12 and a ring handle 13 and the reference numeral 14 denotes the other scissor half with a scissor blade 15 and a ring handle 16.
- the scissor halves 11 and 14 are connected to one another by means of a joint screw 17.
- the scissor blade 12 has a series of separated sharp cutting edges 18, and the scissor blade 15 has a series of separated sharp cutting edges 19.
- the scissor blade 12 has a series of non-cutting dull protrusions 20 and the scissor blade 15 has a series of non-cutting dull protrusions 21.
- Each smooth cutting edge 18, 19 as shown in Fig. 1 is a short linear smooth cutting edge located between a pair of adjacent non-cutting dull protrusions 20, 21. Furthermore, each smooth cutting edge 18, 19 is formed by an upper beveled edge 22, 23 that linearly intersects with the bottom flat side of each scissor blade 14, 15. Although these edges are shown as linear, other embodiments include bowed edges or slightly curved to facilitate cutting. Each non-cutting dull protrusion 20,21 as shown in Figs. 1 and 2 extend outwardly from each smooth cutting edge 18, 19 forming a blunt projection. Also, each non-cutting dull protrusion 20, 21 is spaced from the back side of the opposite scissor blade 11, 14 to avoid a potential pinch point.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Scissors And Nippers (AREA)
Abstract
Synthetic fiber safety cutting scissors (10) comprising a pair of first and second elongated scissor blades (12,15), each having an inner side and an outer side and a plurality of cutting edges (18,19) separated by a plurality of non-cutting protrusions (20,21), and a gripping means (13,16); and a means (17) for pivotally securing said first and second scissor blades (12,15) to each other with said inner sides facing towards each other such that the said cutting edges (18,19) cooperate with each other to cut strands of synthetic fiber. It has been found that with the protrusions (20,21) that foreign objects such as fingers may be prevented from being intersected at the cutting edge.
Description
- The invention relates to safety scissors used to cut synthetic fibers. In particular, the invention is directed to scissors having non-cutting protrusions separating cutting edges, whereby the protrusions are spaced to prevent foreign objects such as fingers from coming into contact with the nip of the cutting edges.
- Various types of scissors are well known in the art. With the conventional scissors, the one scissor blade, when the scissors are closed, overlaps the cutting edge of the other scissor blade with its cutting edge throughout a portion of the length thereof so that between the cutting edges and the base of the cutting edge gap there is a nip which cuts the material. Most of such scissors are used to cut hair or cut other articles including synthetic fibers. However, as well known to one who has used scissors, foreign objects such as fingers can come between the cutting edges of the scissors, resulting in injuries.
- Numerous types of scissors include projections extending from the cutting edge but providing teeth-like gaps as shown in U.S. Patent No. 4,170,064 and 4,660,285. Thinning scissors with two serrated cutting edges are already known and shown in German Patent Specification No. 932,476. In these at least one scissor blade has around cutting edge at the bottom of each of the gashes. It is also known for scissors to have serrated cutting edge of the scissor blade made corrugated for use in hair trimming.
- However, such scissors have sharp serrated edges and still can pose a safety problem. Furthermore, such scissors were not designed for use in cutting synthetic fibers such as nylon, polyester, etc.
It is the objective of the present invention to provide a safety scissor such that foreign objects such as fingers are prevented from entering the cutting edge of the scissor blades. - The object of the invention is based to design safety scissors of the generic type eliminating a safety hazard for the user. According to the invention, the scissors comprise
- a) a pair of first and second elongated scissor blades each having an inner side, an outer side, a plurality of cutting edges separated by a plurality of non-cutting protrusions and gripping means; and
- b) means for pivotally securing said first and second scissor blades to each other with said inner sides facing towards each other such that said cutting edges cooperate with each other to cut when said first and second scissor blades are pivotally moved towards each other from an open position to a closed position.
- In an advantageous development of the invention, the protrusions of the first and second scissor blades are spaced to prevent foreign objects such as fingers to enter into the area of the cutting edges. Such an advantage is useful in cutting strands of synthetic fibers.
- An embodiment of the invention will now be described by way of example, and with reference to the drawing in which Fig. 1 is a front elevation view of closed cutting scissors according to the invention; Fig. 2 is a rear elevational view of the opened scissors; and Fig. 3 is a sectional view of enlarged scale taken on the line 3-3 of Fig. 1.
- In the following detailed description there is described a preferred embodiment of the invention. It will be recognized that although specific terms may be used in describing the preferred embodiment, these are used in the descriptive sense and are not generically and are used for the purposes of description and not of limitation. The invention is susceptible to numerous changes and variations within the spirit and the scope of the teachings herein as will be apparent to the skilled artist.
- Now referring to the drawings illustrated in Figs. 1 to 3 is a preferred embodiment of the
scissors 10 of the present invention. Thescissors 10 include afirst scissor half 11 with ascissor blade 12 and aring handle 13 and thereference numeral 14 denotes the other scissor half with ascissor blade 15 and aring handle 16. Thescissor halves joint screw 17. Thescissor blade 12 has a series of separatedsharp cutting edges 18, and thescissor blade 15 has a series of separatedsharp cutting edges 19. Furthermore, thescissor blade 12 has a series ofnon-cutting dull protrusions 20 and thescissor blade 15 has a series ofnon-cutting dull protrusions 21. - Each
smooth cutting edge non-cutting dull protrusions smooth cutting edge beveled edge scissor blade non-cutting dull protrusion smooth cutting edge non-cutting dull protrusion opposite scissor blade - Individual scissor blades are aligned such that when they are pivoted amongst the screw 7 that the two
cutting edges non-cutting dull edges - It has been found that use of scissors can be used to cut synthetic polymers such as polyester and nylon. In particular, when a strand of such synthetic fibers is running, they are segregated into the cutting edges and cut without danger of cutting the personnel using the scissors. Such scissors may be made of normal materials including steel or part supplemented with plastic. The invention has been described with considerable detail with reference to its preferred embodiments. However, variations and modifications can be made within the spirit and scope of the invention as described in the foregoing specification and defined in the appended claims.
Claims (6)
- Scissors comprisinga) a pair of first and second elongated scissor blades each having an inner side, an outer side, a plurality of cutting edges separated by a plurality of non-cutting protrusions, and gripping means; andb) means for pivotally securing said first and second scissor blades to each other with said inner sides facing towards each other such that said cutting edges cooperate with each other to cut when said first and second scissor blades are pivotally moved towards each other from an open position to a closed position.
- Scissors according to claim 1 wherein said cutting edges of said first and second scissor blades are linear.
- Scissors according to claim 1 wherein said non-cutting protrusions are distanced about 1/3" from each other.
- Fiber cutting scissors adapted to cut selected strands of spun fiber comprisinga) a pair of first and second elongated scissor blades each having an inner side, an outer side, a plurality of cutting edges separated by a plurality of non-cutting protrusions, and gripping means; andb) means for pivotally securing said first and second scissor blades to each other with said inner sides facing towards each other such that said cutting edges cooperate with each other to cut strands of synthetic fiber when said first and second scissor blades are pivotally moved towards each other from an open position to a closed position.
- Fiber cutting scissors of claim 4 wherein said cutting edges of said first and second scissor blades are linear.
- Fiber cutting scissors of claim 4 wherein said non-cutting protrusions are distanced about 1/3" from each other.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US79084991A | 1991-11-12 | 1991-11-12 | |
US790849 | 1991-11-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0543199A1 true EP0543199A1 (en) | 1993-05-26 |
Family
ID=25151916
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92118680A Withdrawn EP0543199A1 (en) | 1991-11-12 | 1992-10-31 | Safety scissors |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0543199A1 (en) |
JP (1) | JPH05208078A (en) |
KR (1) | KR930009717A (en) |
CA (1) | CA2082040A1 (en) |
MX (1) | MX9206498A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997007944A1 (en) * | 1995-08-22 | 1997-03-06 | Jeremy Luke Ward | Scissors |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4587226B2 (en) * | 2006-05-08 | 2010-11-24 | 義之 山内 | Firewood |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1806486A (en) * | 1930-06-05 | 1931-05-19 | Mirafuentes Alfonso Flores | Hair cutting scissors |
DE932476C (en) * | 1954-01-23 | 1955-09-01 | Ernst Hammesfahr | Thinning device |
US4170064A (en) * | 1977-05-13 | 1979-10-09 | Spengler & Meurer | Hair-dressing scissors |
US4660285A (en) * | 1985-06-18 | 1987-04-28 | Kurt Schmidt Fabrikation Von Stahlwaren Und Chirurgischen Instrumenten (Gmbh. & Co.) | Thinning scissors |
US4912846A (en) * | 1988-03-18 | 1990-04-03 | Ying Ming Yu | Disposable razor |
EP0451381A1 (en) * | 1990-04-10 | 1991-10-16 | Ying Ming Yu | Safety blade |
-
1992
- 1992-10-31 EP EP92118680A patent/EP0543199A1/en not_active Withdrawn
- 1992-11-03 CA CA002082040A patent/CA2082040A1/en not_active Abandoned
- 1992-11-11 KR KR1019920021121A patent/KR930009717A/en not_active Application Discontinuation
- 1992-11-11 MX MX9206498A patent/MX9206498A/en unknown
- 1992-11-12 JP JP4302189A patent/JPH05208078A/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1806486A (en) * | 1930-06-05 | 1931-05-19 | Mirafuentes Alfonso Flores | Hair cutting scissors |
DE932476C (en) * | 1954-01-23 | 1955-09-01 | Ernst Hammesfahr | Thinning device |
US4170064A (en) * | 1977-05-13 | 1979-10-09 | Spengler & Meurer | Hair-dressing scissors |
US4660285A (en) * | 1985-06-18 | 1987-04-28 | Kurt Schmidt Fabrikation Von Stahlwaren Und Chirurgischen Instrumenten (Gmbh. & Co.) | Thinning scissors |
US4912846A (en) * | 1988-03-18 | 1990-04-03 | Ying Ming Yu | Disposable razor |
EP0451381A1 (en) * | 1990-04-10 | 1991-10-16 | Ying Ming Yu | Safety blade |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997007944A1 (en) * | 1995-08-22 | 1997-03-06 | Jeremy Luke Ward | Scissors |
Also Published As
Publication number | Publication date |
---|---|
JPH05208078A (en) | 1993-08-20 |
MX9206498A (en) | 1993-05-01 |
CA2082040A1 (en) | 1993-05-13 |
KR930009717A (en) | 1993-06-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB IT |
|
17P | Request for examination filed |
Effective date: 19930624 |
|
17Q | First examination report despatched |
Effective date: 19950321 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19950801 |