Patents by Inventor Christopher John Stevens
Christopher John Stevens 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: 7818884Abstract: A shaving apparatus comprising a first shaving unit, including a first outer cutter (101,102) and a first undercutter (20) which cooperate together, a skin agitation member (12), a housing and a drive source (58) mounted in the housing. The outer cutter is mounted in a frame (10). The drive source is coupled to the first undercutter to provide oscillatory movement with respect to the frame at a frequency in the range 70 to 280 Hz. The drive source is also coupled to the skin agitation member to provide oscillatory movement at a frequency in the range 5 to 50 Hz. The first outer cutter is un-driven with respect to the frame.Type: GrantFiled: July 21, 2005Date of Patent: October 26, 2010Assignee: The Gillette CompanyInventors: Terence Gordon Royle, Oliver David Oglesby, Christopher John Stevens
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Publication number: 20100236073Abstract: An electric razor comprises an apertured foil for (1) contact with skin being shaved, and an undercutter (23) urged against the foil and movable relative to the foil, in a direction parallel to a longitudinal axis of the foil, for shearing hairs that protrude through the foil apertures. The foil has a ridge (12) extending along the foil with first and second foil portions (8,9) forming respective flanks of the ridge. The cross-section of the foil is in a plane normal to the longitudinal axis and has an asymmetric arched profile. A first segment (5) of the cross-section taken through the first foil portion (8) has a radius of curvature in the range of 0.5 to 3.0 mm. A second segment (6) of the cross-section taken through the second foil portion (9) is contiguous with the first portion and has a radius of curvature in the range of 5 to 30 mm. The undercutter is in contact with the foil portions at both flanks of the ridge.Type: ApplicationFiled: August 3, 2006Publication date: September 23, 2010Applicant: THE GILLETTE COMPANYInventors: Edward Neill Forsdike, Christopher John Stevens
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Publication number: 20100043242Abstract: A safety razor having a blade unit has at least one blade and a handle casing. A pivotal connection structure is disposed between the blade unit and the handle casing. A first member is connected to the blade unit and a second member is connected to the handle casing. A joint member connects the first member and the second member and facilitates movement of the first member relative to the second member about a hinge axis that is substantially perpendicular to the at least one blade.Type: ApplicationFiled: August 17, 2009Publication date: February 25, 2010Inventor: Christopher John Stevens
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Patent number: 7111399Abstract: A method of shaving with a shaving apparatus including an undercutter assembly having a primary undercutter and a secondary undercutter, the primary and secondary undercutters having interleaved blade elements. The method includes the steps of: reciprocally moving the undercutter assembly in hair shearing relation with an outer cutter; moving the primary undercutter relative to the secondary undercutter; trapping hairs which are to be cut between interleaved blade elements of the primary and secondary undercutters; pulling the trapped hairs by continued movement of the undercutter assembly in a respective reciprocation direction; and cutting the hairs between the outer cutter and the undercutter assembly.Type: GrantFiled: June 2, 2005Date of Patent: September 26, 2006Assignee: Braun GmbHInventor: Christopher John Stevens
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Patent number: 7065877Abstract: An undercutter assembly for a shaver of the dry-type having an outer cutter and a motor drive mechanism. The undercutter includes a primary undercutter adapted to be reciprocated by the drive mechanism and having primary blade elements, and a secondary undercutter disposed within said primary undercutter for displacement relative the primary undercutter and having secondary blade elements interleaved with the primary blade elements.Type: GrantFiled: June 2, 2005Date of Patent: June 27, 2006Assignee: Braun GmbHInventor: Christopher John Stevens
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Patent number: 6935027Abstract: A shaving apparatus includes an outer cutter (60), for example in the form of a perforated foil, and an undercutter assembly (10), adjacent to the outer cutter, which is drivable for linear reciprocation in a reciprocation direction. The undercutter assembly has a driven primary undercutter (20) and a secondary undercutter (30), which is moveable with respect thereto, the blade elements of the primary and secondary undercutters being mutually interleaved. When the primary undercutter (20) is reciprocated relative the outer cutter (60), the secondary undercutter (30) also performs a reciprocating movement, which lags behind that of the primary undercutter, so the blade elements of the primary and second undercutters move towards one another at intervals and can trap hairs therebetween, causing them to be pulled in addition to the cutting action and thus achieving a closer shave.Type: GrantFiled: September 11, 2003Date of Patent: August 30, 2005Assignee: Braun GmbHInventor: Christopher John Stevens
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Publication number: 20040083865Abstract: A shaving apparatus includes an outer cutter (60), for example in the form of a perforated foil, and an undercutter assembly (10), adjacent to the outer cutter, which is drivable for linear reciprocation in a reciprocation direction. The undercutter assembly has a driven primary undercutter (20) and a secondary undercutter (30), which is moveable with respect thereto, the blade elements of the primary and secondary undercutters being mutually interleaved. When the primary undercutter (20) is reciprocated relative the outer cutter (60), the secondary undercutter (30) also performs a reciprocating movement, which lags behind that of the primary undercutter, so the blade elements of the primary and second undercutters move towards one another at intervals and can trap hairs therebetween, causing them to be pulled in addition to the cutting action and thus achieving a closer shave.Type: ApplicationFiled: September 11, 2003Publication date: May 6, 2004Inventor: Christopher John Stevens
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Patent number: 6568450Abstract: The tape dispenser has a handle (1) for storing a supply of tape (18). The tape (18) consists of a backing ribbon carrying a coating composition, and backing ribbon from which the coating composition has been removed. An applicator (12) having en edge (10) around which the tape (18) passes is arranged for pressing the tape (18) against a surface to transfer the coating composition from the backing ribbon to said surface.Type: GrantFiled: March 16, 1998Date of Patent: May 27, 2003Assignee: Berol CorporationInventor: Christopher John Stevens
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Patent number: 6231257Abstract: A marking instrument includes a barrel, a marking tip and a marking fluid reservoir disposed in the barrel, a retraction mechanism to move the marking tip from an operable position to a retracted position through an opening in the barrel, and a seal to close off the marking tip from the barrel opening when the marking tip is retracted. The seal is toroidal in shape, which allows the seal to close upon itself, thereby eliminating any need for additional manipulation or outside forces to close the seal. The marking tip, marking fluid reservoir and seal are replaceable so that each can be replaced when they become worn or inoperable.Type: GrantFiled: September 8, 1999Date of Patent: May 15, 2001Assignee: The Gillette CompanyInventor: Christopher John Stevens
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Patent number: 6135660Abstract: A retractable marking instrument has a seal arrangement for sealing the marking tip (3) when it is retracted within the barrel. The seal arrangement comprises a sealing element (6) shaped as a torus which rolls between the barrel (1) of the instrument and a refill unit (2) carrying the marking tip (3).Type: GrantFiled: September 10, 1999Date of Patent: October 24, 2000Assignee: The Gillette CompanyInventors: Christopher John Stevens, Graham John Simms
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Patent number: 6112796Abstract: The tape dispenser has a housing accommodating a tape. The tape consists of a carrier ribbon carrying a coating of a composition. The housing also accommodates used carrier ribbon from which the composition has been removed. The supply of tape is held in an elongated reel wound around a pair of spaced and independently rotatable spool members. Ends of the carrier ribbon are connected together, and the used carrier ribbon is stored on the reel with remaining unused tape.Type: GrantFiled: March 16, 1998Date of Patent: September 5, 2000Assignee: The Gillette CompanyInventor: Christopher John Stevens
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Patent number: 5820728Abstract: A tape dispenser for applying a strip of a coating composition to a substrate, including a holder containing a supply spool of tape consisting of a carrier ribbon coated on one side with the composition, and a take-up spool for used tape consisting of carrier ribbon from which the composition has been removed. The tape is guided to pass between the supply and take-up spools around an edge of an application tip element used to press the ribbon against the substrate to transfer the composition onto the substrate. The application tip element is coupled to the holder for movement about a predetermined axis substantially aligned with the direction in which the element is pressed against the substrate in use of the dispenser. Frictional forces exerted on the application tip element during movement of the element across the substrate surface cause the element to move about the axis to maintain the edge substantially perpendicular to the direction of the movement of the element across the surface.Type: GrantFiled: July 8, 1997Date of Patent: October 13, 1998Assignee: The Gillette CompanyInventors: Christopher John Stevens, Robert White
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Patent number: 5714035Abstract: A correction tape dispenser body has an applicator tip assembly connected thereto, the assembly including an applicator tip with an edge for pressing a tape against a surface. The tip is connected to a supporting member by a shell bearing to permit relative movement between the tip and the supporting member, about a common axis.Type: GrantFiled: March 20, 1996Date of Patent: February 3, 1998Assignee: The Gillette CompanyInventor: Christopher John Stevens
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Patent number: RE40631Abstract: In a correction tape dispenser, wherein a backing ribbon carrying a layer of correcting composition is fed from a supply spool (2) around the edge (6) of an applicator tip (10) used to press the tape against a paper surface (P) to transfer the layer of correcting composition onto the paper, and back to a take-up spool (3), a tape guide system (11,12; 22,23) is provided near the tip to redirect the tape, the tip edge (6) being at an angle to the feed direction so that the body of the tape dispenser may be held in a forwardly and downwardly inclined orientation similar to that in which a writing instrument is normally held.Type: GrantFiled: September 30, 1997Date of Patent: February 3, 2009Assignee: Berol CorporationInventor: Christopher John Stevens