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William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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| Number | Title | Issue Date |
| 7434318 | Tool with enlarged hammer element A tool includes a blade having a working edge and an attachment edge opposite the working edge, a handle with distal and proximal ends and a body having at least one diameter. The proximal end is associated with the attachment edge. A hammer element is associated wi... | 10/14/2008 |
| 7152511 | Polychrome transparent tool handle A polychrome transparent tool handle comprises a base, an identifying member, a plug, an ear member, a plurality of arcuate members and a cladding layer. The colors of the identifying member, the arcuate members and the cladding layer are different, the handle is ma... | 12/26/2006 |
| 6698065 | Self-standing hand held marking implements A marking implement includes a structure which is capable of automatic orientation in an upright position upon a horizontal surface. The structure includes a weighted base having a substantially rounded and convex exterior, and adapted to support the mark... | 03/02/2004 |
| 6594863 | Insert for facilitating multi-component moulding and method of moulding A handle for a hand-held or operated object or appliance comprises a main body (4) of a rigid material and a separate moulding insert (14) which can be fitted on the main body and having a raised pattern or shape ("HO") including at least one element ther... | 07/22/2003 |
| 6490760 | Self-standing, hand held implements A hand held implement includes a structure which is capable of automatic orientation in an upright position upon a horizontal surface. The structure includes a weighted base having a substantially rounded and convex exterior, and adapted to support the ha... | 12/10/2002 |
| 6471433 | Pen having a 3-dimensional pattern thereon A pen having a 3-dimensional pattern has at least one flexible strip. The flexible strip is sandwiched between a pattern ring and a liner ring with the 3-dimensional pattern partially protruding out of the pattern ring from a corresponding through hole. T... | 10/29/2002 |
| 6442787 | Contouring toothbrush head A toothbrush having two head sections, the sections being normally biased to assume an angle with respect to each other, to thereby define a generally concave bristle tip configuration. The two sections of the head having facing ends joined by a thin brid... | 09/03/2002 |
| 6408474 | Paint brush with two component brush handle and method of making same A paint brush includes a two component brush handle having a head portion made of a relatively rigid plastic material and a grip portion made of a relatively soft, flexible elastomeric material. The head portion has one end adapted to fit within the ferru... | 06/25/2002 |
| 6237192 | Removable grip for ultrasound probe A removable grip for an ultrasound probe. The grip may be an integrated or unitary hand-held device having a circular or C-shaped cross-section that, when located at a predetermined operative position on the probe, removably surrounds a substantial portio... | 05/29/2001 |
| 6170123 | Handle for a hand tool Disclosed is a tool handle for an electronic screwdriver or other hand tool. The tool handle includes a tool handle body having a longitudinal dimension and comprising a convex portion that comprises about 2/5 of the longitudinal dimension proximal to the... | 01/09/2001 |
| 6128808 | Tool handle Handle for tools such as screwdrivers, cormprising a core of hard plastic material around a metal shaft and a gripping surface (14) of soft material covering parts of the core, where the core within the regions covered by the gripping surface is made with... | 10/10/2000 |
| 6122802 | Tool handle A tool handle includes a number of blocks attached to a handle member, and a cover sleeve engaged on the handle member and having a number of orifices for receiving the blocks and for retaining the blocks in place. The handle member and the blocks may be ... | 09/26/2000 |
| 6108870 | Tool handle combination A tool handle includes a handle member, a number of blocks attached to the handle member, and a cover sleeve engaged on the handle member and having a number of orifices for receiving the blocks and for retaining the blocks in place. The handle member inc... | 08/29/2000 |
| 6094781 | Handle with marking A handle for tools such as screwdrivers where an end region is shaped as a smooth rounded surface and made by injection molding in multiple steps from at least two differently colored plastic materials, which are tactilely indistinct, to form a visible ma... | 08/01/2000 |
| 6070301 | Cushioned handle for wire cutting and seating tool Hammer rebound shock and hand and wrist fatigue associated with the use of a wire seating and/or cutting tool, such as an impact tool, is alleviated by a covering at least the butt end of the tool handle with an internally ribbed cushioning sleeve of elas... | 06/06/2000 |
| 5771490 | Hand and handle covering with vibration-reducing bladder An air isolation hand covering has a bladder consisting of a plurality of interconnected or independent inflation cells that is positioned between the hand and a hand-held tool or other vibrating object. The cells are oriented to permit easy bending of th... | 06/30/1998 |
| 5722116 | Tool handgrip having a simplified longitudinal softer zones A tool handgrip includes a core having two or more spaced longitudinal ridges secured to the outer peripheral portion of the core. The longitudinal ridges each includes a thickness ranging from 1 mm to 6 mm and each includes a hardness less than that of t... | 03/03/1998 |
| 5713096 | Finishing trowel handle A finishing trowel comprised of a blade, a mounting and a handle, wherein the handle is hollow and has a square mounting hole for receiving a square mounting surface. A plastic handle is comprised of a durable inner core material and a grippable outer mem... | 02/03/1998 |
| 5645276 | Formed grip for expandable batons A cover for an expandable baton handle is molded onto the handle to provide an integral, unitary handle grip which is permanently bonded to the handle section of the baton. This permits secure bonding and formed contours to conform to the precise shape of... | 07/08/1997 |
| 5640741 | Structure for handle of power tool A handle structure of a power tool comprises a handle portion continuously formed with the main body of the power tool and a gutter-like soft grip for covering the handle portion, the soft grip having two first engaging projections on its inner surface an... | 06/24/1997 |
| 5551323 | Screwdriver handle A screwdriver handle product and method of making same, where a solid core piece has an elastomer cover molded thereon, and the core piece has grooves for receiving the molten cover to thus have the cover secure on the core piece. The cover is shaped in c... | 09/03/1996 |
| 5530989 | Dual durometer handles A dual durometer thermoplastic polyurethane or thermoplastic polyurethane-containing handle suitable for human grip provides both mechanical strength and chemical resistance and can be prepared without the use of adhesives.... | 07/02/1996 |
| 5475894 | Handgrip for a tool and method of making same A handgrip for implements, utensils or tools, especially handtools and sporting implements, and particularly a screwdriver, has an elongated grip body formed at gripping regions engageable by the fingers or ball of a hand of a user with particles of inorg... | 12/19/1995 |
| 5421931 | Process for manufacturing reinforced rod assemblies, including tool handles A composite tool handle includes one or more load-bearing jackets surrounding a core of lightweight or reinforcing material. The interface between the core and the jacket is corrugated to increase the flexural strength of the tool handle while minimizing ... | 06/06/1995 |
| 5211669 | Composite handle for tools An implement handle includes an axially elongated core member having a varying cross-sectional outer dimension, and an outer polymeric shell having axially-oriented substantially-continuous strength members, the outer shell enclosing and being bonded to t... | 05/18/1993 |
| 4969268 | Kitchen utensil A "woodenware" kitchen utensil which has a functional head which is integrally connected to an elongated handle. The utensil has a core of cellular polyolefin which is covered by a skin of solid polyolefin and which has the outer shape of the desired kitc... | 11/13/1990 |
| 4949457 | Soft resilient razor handle According to this invention a composite razor handle having a rigid inner core of thermoplastic material and a moldable flexible resilient covering layer is provided. This flexible convering layer because of its flexibility, compressibility and initial de... | 08/21/1990 |
| 4739536 | Screwdriver handgrip having harder and softer zones A handle for tools, specifically for screwdrivers, is disclosed. The handle consists of two materials of different hardness, of which the harder material supporting the tool is incompressible under the forces occurring at operational load, whereas the oth... | 04/26/1988 |
| 4660832 | Shock and vibration absorbent handle A shock and vibration handle for application to the hand gripping portion of the normal handle of an impacted, vibration sensitive item, such as, a tennis racket, a racquetball racket, a golf club, a baseball bat, and other impact devices, such as hammers... | 04/28/1987 |
| 4639029 | Tool handle A tool handle comprises a composite structure including a core member having a molded plastic outer coating over the core member. The molded plastic composite structure has a socket end, an intermediate section and a butt end. The socket end includes a su... | 01/27/1987 |
| 4570988 | Reinforced tool handle and method of manufacturing same A reinforced tool handle and a method of producing the same are provided by which a hollow fiberglass rod is produced with a solid section integrally formed at predetermined stress points. The tool handle of this invention is formed by alternately feeding... | 02/18/1986 |
| 4556245 | Carrying handle assembly for a diving tank A carrying handle assembly for a diving tank including a pair of straps that encircle the tank. A handle extends longitudinally of the tank and is removably connected to the straps. The handle comprises a rigid tubular core having a dog-leg shape, with th... | 12/03/1985 |
| 4451073 | Flexible core for tool handles A flexible core is provided for insertion in the handle receiving socket of a tool blade, such as a shovel. This flexible core provides compressive support inside the handle socket to prevent buckling or collapse of the socket when the socket is subjected... | 05/29/1984 |
| 4418732 | Hand tool and a core reinforced molded synthetic material handle therefor A molded synthetic material tool handle comprises a synthetic material molded around an elongated reinforcing core. A tool carrying section is located at one end of the handle and a hand holding section extends from the tool carrying section. The tool car... | 12/06/1983 |
| 4416166 | Handle grip A two part grip for the handle of a bicycle or motorcycle or the like comprises: (a) an inner support sleeve adapted to fit on and grip the handle, and (b) an outer sleeve fitted over the inner sleeve and positioned to be comfortably grasped by the user. The s... | 11/22/1983 |
| 4351886 | Method of forming a laminated structural member and member formed thereby A method of forming a laminated structural member and the structural member formed thereby. The method includes the steps of securing a first sheet of metal and a superimposed second sheet of metal to each other along areas on opposite edges of the sheets... | 09/28/1982 |
| 4338270 | Method of fabricating a composite foam hand held implement grip A hand grip for a hand-held implement, e.g., a golf club, that consists of a rigid cap and a one-piece flexible foam tubular sleeve. The cap is structured to cooperate with the implement's handle shaft for locating and retaining the grip on that shaft, an... | 07/06/1982 |
| 4280247 | Luggage case handle assembly This invention is a handle assembly for luggage. It includes an elongated, hollow, complaint handgrip portion having a pair of parallel grooves on its upper surface. A rigid end member is received in each end of the hollow handgrip and extends away from t... | 07/28/1981 |
| 4016315 | Sheathed soft-handle with concealed lapped ends A soft-feel handgrip for a handle construction having cushioning members for the top and bottom of the grip and a thermoplastic sheath wrapped around each member with concealed overlapped sheath ends and a method of making the handgrip employing dielectri... | 04/05/1977 |
