Patents by Inventor Fritz Luttgens
Fritz Luttgens has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11999185Abstract: The present disclosure provides a pencil sharpener for pencils having a lead surrounded by a lead carrier. The pencil sharpener includes a hollow guide channel for the pencil to be sharpened. An inner surface of the guide channel forms a guide surface for a partial area of a lead carrier of the pencil to be sharpened. To prevent contamination of an outer surface of the lead carrier the inner surface of the guide channel is interrupted by at least one cleaning groove extending in an axial direction of the guide channel.Type: GrantFiled: April 5, 2022Date of Patent: June 4, 2024Inventor: Fritz Lüttgens
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Publication number: 20220324251Abstract: The present disclosure provides a pencil sharpener for pencils having a lead surrounded by a lead carrier. The pencil sharpener includes a hollow guide channel for the pencil to be sharpened. An inner surface of the guide channel forms a guide surface for a partial area of a lead carrier of the pencil to be sharpened. To prevent contamination of an outer surface of the lead carrier the inner surface of the guide channel is interrupted by at least one cleaning groove extending in an axial direction of the guide channel.Type: ApplicationFiled: April 5, 2022Publication date: October 13, 2022Inventor: Fritz Lüttgens
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Publication number: 20180281505Abstract: A pencil sharpener (1) having a sharpener body (2), having at least one guide cone (7) situated in the sharpener body (2) for guiding the pencil tip (5) during sharpening, and having a cutting blade (3) fixed to the sharpener body (2), tangentially with respect to the guide cone (7), for shaving the pencil tip (5) in such a way that the pencil tip (5) at the front end has a tapered pencil lead section (24) without casing material, and an adjoining casing section (26) in the center longitudinal direction (20) of the pencil (4) with a pencil lead casing (23) made of casing material, in which the pencil lead (25) of the pencil (4) is embedded, with a guide element (16), which is situated in the area of the main cutting edge (12) of the cutting blade (3) and which engages with the pencil tip (5) in the area of the separating line (27) in the transition area between the pencil lead section (24) and the casing section (26), and which acts on the pencil tip (5), without cutting, in such a way that the shavings of thType: ApplicationFiled: March 23, 2018Publication date: October 4, 2018Inventor: Fritz Lüttgens
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Patent number: 8769835Abstract: A pencil sharpener (1) with a handle (3) and a sharpener insert (4) inserted into the handle (3) with a pencil guide channel (33) and a paring blade (34) is proposed, in conjunction with which the handle (3) is formed so as to correspond at least partially to the inner contours of a curved human hand (26). Improved ease of handling is achieved through the formed handle (3). Also proposed is a method for the manufacture of a pencil sharpener (1) of this kind, in which the handle (3) is formed in subsidiary areas so as to correspond to the inner contours of the human hand (26).Type: GrantFiled: December 14, 2006Date of Patent: July 8, 2014Assignee: Kum LimitedInventor: Fritz Lüttgens
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Patent number: 8042278Abstract: A compass writing implement includes a compass body having two compass legs mutually pivotable between closed and splayed-out states. A writing lead is mounted in one of the compass legs. A protective cap is or can be fitted onto the free end of at least the compass leg holding the writing lead, to shield the free ends of the two compass legs in the closed state from the outside. The protective cap has a passage for the writing lead at a distal end remote from the compass body in the fitted state. The writing lead and the fitted protective cap are mutually displaceable between a release state and a retention state. In the release state, a lead tip of the writing lead protrudes through the passage of the protective cap to the outside and in the retention state, the writing lead is retracted in the interior of the protective cap.Type: GrantFiled: December 10, 2009Date of Patent: October 25, 2011Inventor: Fritz Lüttgens
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Publication number: 20100139104Abstract: A compasses writing implement includes a compasses body having two compasses legs mutually pivotable between closed and splayed-out states. A writing lead is mounted in one of the compasses legs. A protective cap is or can be fitted onto the free end of at least the compasses leg holding the writing lead, to shield the free ends of the two compasses legs in the closed state from the outside. The protective cap has a passage for the writing lead at a distal end remote from the compasses body in the fitted state. The writing lead and the fitted protective cap are mutually displaceable between a release state and a retention state. In the release state, a lead tip of the writing lead protrudes through the passage of the protective cap to the outside and in the retention state, the writing lead is retracted in the interior of the protective cap.Type: ApplicationFiled: December 10, 2009Publication date: June 10, 2010Applicant: KUM LIMITEDInventor: Fritz Lüttgens
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Publication number: 20080178476Abstract: A sharpener blade is made of a steel body for sharpening a colored, graphite or cosmetic pencil. On the steel body is a chemically bonded, inorganic protective coating that contains at least one element selected from the group containing the metals of the main groups III and IV and the B-groups of the periodic system of elements, and oxides, ceramics, nitrides, carbides, silicides and borides of these. A sharpener blade of this type has permanent protection against corrosion, along with high sharpness and hardness levels. At the same time, it can be colored.Type: ApplicationFiled: January 24, 2008Publication date: July 31, 2008Applicant: KUM LIMITEDInventor: Fritz Luttgens
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Patent number: 7363714Abstract: A pencil sharpener has at least two sharpener units, each with a sharpener body and a shaving blade. The sharpener bodies of adjacent sharpener units being connected integrally via film strips acting as a predetermined bending point and/or predetermined separating point. In a second variant, the pencil sharpener has a sharpener body and a shaving blade fastened thereon. The sharpener body has a guide sleeve with a bore defining a pencil-guiding channel for a pencil to be sharpened, and at least one flat supporting wing which projects approximately radially in cross section from the guide sleeve. In an end region of the supporting wing a functional element is provided for protecting or for working on the tip of the pencil.Type: GrantFiled: July 3, 2006Date of Patent: April 29, 2008Assignee: Kum LimitedInventor: Fritz Lüttgens
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Publication number: 20070172679Abstract: An office or cosmetics article made of a magnesium material, in particular a sharpener body or a ruler, has an inorganic, chemically bonded protective layer including at least one element selected from the group containing the metals of the main groups III, IV, V and VI and the subgroups Ib, IVb, Vb, VIb, VIIb and VIIIb of the Periodic Table of the Elements, as well as oxides, ceramics, nitrides, carbides, silicides and borides thereof. The office or cosmetics article is lastingly protected against corrosion by virtue of such a protective layer.Type: ApplicationFiled: January 25, 2007Publication date: July 26, 2007Applicant: KUM LimitedInventor: Fritz Luttgens
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Publication number: 20070137051Abstract: A pencil sharpener (1) with a handle (3) and a sharpener insert (4) inserted into the handle (3) with a pencil guide channel (33) and a paring blade (34) is proposed, in conjunction with which the handle (3) is formed so as to correspond at least partially to the inner contours of a curved human hand (26). Improved ease of handling is achieved through the formed handle (3). Also proposed is a method for the manufacture of a pencil sharpener (1) of this kind, in which the handle (3) is formed in subsidiary areas so as to correspond to the inner contours of the human hand (26).Type: ApplicationFiled: December 14, 2006Publication date: June 21, 2007Applicant: KUM LimitedInventor: Fritz Luttgens
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Patent number: 7225547Abstract: A compact sharpener (1) for a pencil (S), the sharpener being cost-effective to realize and being particularly suitable for sharpening a cosmetic pencil in particular, comprises a sharpener body (2) and a shaving blade (3) fastened thereon. The sharpener body (2), in turn, comprises a guide sleeve (4) and a blade holder (5) integrally formed on the guide sleeve (4), the guide sleeve (4) having a bore (6) which defines a pencil-guiding channel (7) and has an introduction end (8) and an outlet end (9) for the pencil (S), and the blade holder (5) having a bearing surface (15) which is positioned obliquely in relation to the axis (11) of the pencil-guiding channel (7), projects axially beyond the outlet end (9) of the guide sleeve (4) and is intended for positioning the shaving blade (3).Type: GrantFiled: May 21, 2004Date of Patent: June 5, 2007Assignee: KUM LimitedInventor: Fritz Lüttgens
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Publication number: 20070044327Abstract: A pencil sharpener is particularly favorable in production terms and advantageous in handling terms. In a first variant, the pencil sharpener has at least two sharpener units, of which each has a sharpener body and a shaving blade fastened thereon, the sharpener bodies of adjacent sharpener units being connected integrally via film strips acting as a predetermined bending point and/or predetermined separating point. In a second variant, the pencil sharpener has a sharpener body and a shaving blade fastened thereon. The sharpener body has a guide sleeve with a bore defining a pencil-guiding channel for a pencil to be sharpened, and at least one flat supporting wing which projects approximately radially in cross section from the guide sleeve. In an end region of the supporting wing that is directed away from the guide sleeve a functional element is provided for protecting or for working on the tip of the pencil.Type: ApplicationFiled: July 3, 2006Publication date: March 1, 2007Inventor: Fritz Luttgens
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Publication number: 20060242846Abstract: A pencil sharpener has improved handling. The pencil sharpener has a sharpener body, which defines a pencil-guiding channel and has a blade holder, set at an angle with respect to an axis of the pencil-guiding channel, for a shaving blade. The sharpener body is also provided with at least one gripping area intended for bearing one or more fingers of a hand holding the sharpener body during the sharpening operation. The at least one gripping pad is made of a soft material in comparison with the sharpener body and is provided at least in a subregion of the gripping area.Type: ApplicationFiled: October 31, 2005Publication date: November 2, 2006Inventor: Fritz Luttgens
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Patent number: 7036231Abstract: A sharpener includes a sharpener body, a guide collar and a shaving blade. The guide collar has an oval bore defining a pencil-guiding channel and is mounted on the sharpener body such that it can be rotated essentially about the axis of the pencil-guiding channel. The shaving blade is fastened on a blade holder of the sharpener body to be positioned axially offset in relation to the guide collar and obliquely in relation to the axis of the pencil-guiding channel. A concave guide contour, into which the shaving blade projects by way of a cutting edge is formed on an inner surface of the blade holder adjacent to the pencil-guiding channel. When the pencil positioned in the pencil-guiding channel is rotated in relation to the sharpener body, the axis of the pencil-guiding channel is guided on an essentially oval path in relation to the cutting edge.Type: GrantFiled: May 21, 2004Date of Patent: May 2, 2006Assignee: KUM LimitedInventor: Fritz Lüttgens
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Publication number: 20060080846Abstract: A sharpener, which is easy to handle and manufacture, has an integrated pencil cap for sharpening and storing a cosmetic pencil. A sharpener housing accommodates a paring device for the pencil and has an insertion opening for the pencil disposed substantially concentrically with a pencil guide axis of the paring device. The sharpener further includes a pencil cap to be put onto the pencil and has an open end and a closed end lying opposite along a cap axis. The sharpener housing is connected to the pencil cap in an articulated manner such that the pencil cap can be pivoted relative to the sharpener housing into a closed position, in which the pencil cap closes the insertion opening of the sharpener housing, and also into an open position, in which the insertion opening of the sharpener housing is freed for insertion of the pencil.Type: ApplicationFiled: October 17, 2005Publication date: April 20, 2006Inventor: Fritz Luttgens
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Patent number: 6976314Abstract: A sharpener for sharpening soft-core pencils, especially those used in the medical or pharmaceutical field, includes a housing; and a shaping componentry, received by the housing, for shaping and sharpening a medical or pharmaceutical pencil. The shaping componentry contains a cleaning agent to thereby disinfect the pencil.Type: GrantFiled: November 25, 2002Date of Patent: December 20, 2005Assignee: KUM LimitedInventor: Fritz Lüttgens
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Publication number: 20050257386Abstract: The invention specifies a sharpener (1) of straightforward design which is particularly suitable for sharpening an oval pencil (S). The sharpener (1) comprises a sharpener body (2), a guide collar (3) and a shaving blade (4). In this case, the guide collar (3) is provided with an oval bore (17) defining a pencil-guiding channel (18) and is mounted on the sharpener body (2) such that it can be rotated essentially about the axis (20) of the pencil-guiding channel (18). The shaving blade (4) is fastened on a blade holder (10) of the sharpener body (2) such that it is positioned in an axially offset manner in relation to the guide collar (3) and obliquely in relation to the axis (20) of the pencil-guiding channel (18), a concave guide contour (28), into which the shaving blade (4) projects by way of a cutting edge (12), being formed on an inner surface (14) of the blade holder (10) which is adjacent to the pencil-guiding channel (18).Type: ApplicationFiled: May 21, 2004Publication date: November 24, 2005Inventor: Fritz Luttgens
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Publication number: 20050257387Abstract: A compact sharpener (1) for a pencil (S), the sharpener being cost-effective to realize and being particularly suitable for sharpening a cosmetic pencil in particular, comprises a sharpener body (2) and a shaving blade (3) fastened thereon. The sharpener body (2), in turn, comprises a guide sleeve (4) and a blade holder (5) integrally formed on the guide sleeve (4), the guide sleeve (4) having a bore (6) which defines a pencil-guiding channel (7) and has an introduction end (8) and an outlet end (9) for the pencil (S), and the blade holder (5) having a bearing surface (15) which is positioned obliquely in relation to the axis (11) of the pencil-guiding channel (7), projects axially beyond the outlet end (9) of the guide sleeve (4) and is intended for positioning the shaving blade (3).Type: ApplicationFiled: May 21, 2004Publication date: November 24, 2005Inventor: Fritz Luttgens
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Patent number: 6722803Abstract: A pencil includes a writing element; and an envelope in surrounding relationship to the writing element. The envelope defines with the writing element a pencil tip and is constructed to include a cleansing material for effecting a spontaneous cleaning of the pencil tip.Type: GrantFiled: November 25, 2002Date of Patent: April 20, 2004Assignee: KUM LimitedInventor: Fritz Lüttgens
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Publication number: 20040042837Abstract: A pencil includes a writing element; and an envelope in surrounding relationship to the writing element. The envelope defines with the writing element a pencil tip and is constructed to include a cleansing material for effecting a spontaneous cleaning of the pencil tip.Type: ApplicationFiled: November 25, 2002Publication date: March 4, 2004Applicant: KUM Limited, IE - Trim, Co.Inventor: Fritz Luttgens