|Publication number||US3122774 A|
|Publication date||Mar 3, 1964|
|Filing date||Aug 8, 1961|
|Priority date||Aug 8, 1961|
|Publication number||US 3122774 A, US 3122774A, US-A-3122774, US3122774 A, US3122774A|
|Original Assignee||Lamb Thomas|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (3), Referenced by (18), Classifications (9)|
|External Links: USPTO, USPTO Assignment, Espacenet|
T. LAMB HANDLES March 3, 1964 2 Sheets-Sheet 1 Filed Aug. 8, 1961 INVENTOR.
THOMAS LAMB F/G. 3 By 6 l c ATTORNEYS March 3, 1964 T. LAMB HANDLES Filed Aug. 8, 1961 2 SheetsSheet 2 THOMAS LAMB A770 NEYS I I i ZALZZZ L Q United States Patent 3,122,774 I MNDLES Thoma Lamb, Mariomi Road, New Canaan, Conn. Filed Aug. 8, 1961, Ser. No. 130,169 7 Claims. (Cl. 16-110) This invention relates to handles.
It is an object of the invention to provide an all purpose handle which, when grasped by the human hand, may be used in various relationships to perform a variety of hand operations such as lifting, pushing, pulling, twisting, turning and combinations of such operations, and which enables the hand to perform such operations comfortabl eificiently and with a minimum of fatigue.
Other objects and advantages of the invention will appear hereinafter.
A preferred embodiment of the invention selected for purposes of illustration is shown in the accompanyin drawings, in which FIGURE 1 is an exploded perspective view of a handle embodying my invention.
FIGURE 2 is a top plan view of the handle.
FIGURE 3 is a side elevation.
FIGURES 4 and 5 are a top plan view and side elevation, respectively, of a modified form of handle.
FIGURES 6 and 7 are an exploded perspective View and a side elevation, respectively, of another modified form of handle.
Referring to the drawings, the essential features of the invention have been illustrated in FIG. 1 by splitting the handle into a plurality of pieces, shown in exploded form. The same handle, with the pieces assembled or formed integrally is shown in FIGS. 2 and 3.
As shown in the exploded view of FIG. 1, the handle comprises a tetrahedron 1, the faces of which are four isosceles triangles which are bounded by edges joining the apices of the isosceles triangles. Thus the four apices 2, 3, 4, 5 of the triangles are joined by edges which form a pair of isosceles triangles 243 and 2-5-3 having a common base 23, and an additional pair of isosceles triangles 425 and 43-5 having a common base 4-5. The legs of the triangles are substantially longer than their bases, and the apices of the pairs of triangles point in opposite directions. Thus, the apices of triangles 24-3 and Z53 point in one direction, while the apices of triangles 435 and 425 point in the opposite direction. Also, the apices of each of the pairs of triangles are spaced apart a distance equal to the length of the common base of the other pair of triangles. For example, the apices 2 and 3 of the pair of triangles 425 and 435 are spaced apart by the length of the base common 23 of the other pair of triangles 243 and 2-53.
Each of the triangular surfaces of the tetrahedron 1 is covered, in whole or in part, by a conic member which is essentially a portion of a cone or conoid formed by taking a longitudinal section therethrough. Thus, for example, the conic members 6 and 7 are portions of cones, while members 8 and 9 are portions of conoids. In the embodiment illustrated, the conic members 6 and 7 are portions of cones each having a base 10, the diameter of which is approximately equal to the length of the base 23 of the pair of triangles 2-43 and 25--3. The height of each conic members from the base 10 to the apex 11 is substantially equal to the height of the triangles 243 and 2-5-3 from the base to the apex, so that the fiat faces of the cones sections are triangles of the same size and shape as the pair of triangles 24--3 and Z53.
On the other hand, in the embodiment illustrated, the conic members 8 and 9 are portions of conoids, and while the diameter of the base 12 of each member is approximately equal to the length of the base 4-5 of the pair of triangles 425 and 435, the height of each of the conic members from the base to the apex 13 is substantially less than the height of the triangles 425 and 43-5 from the base to the apex. Hence, the flat faces of the conic members are of less area than that of the said triangles and they each have curved edges extending from the apex 13 to the base 12.
When the members 1, 6, 7, 8 and 9 are assembled as shown in FIGS. 2 and 3, the exposed surfaces form gripping surfaces for the hand, and particularly for the thumb, forefinger and middle finger of the hand. The hand grip portion of the handle above described constitutes the novel features of the invention, but if desired, the handle may be extended at either or both ends by appropriately shaped members adapted for connection to an article to be manipulated, andadapted, if desired, to provide additional gripping surfaces for engagement by the third and fourth fingers and by the heel of the hand. Typical extensions 14 and 15 are illustrated in FIGS. 1, 2 and 3, the extension 14 at the front end of the handle being adapted to receive the end of a member to be manipulated such as a tool, a knife blade or a shaft, for example. The extension 15 at the rear end of the handle provides additional gripping surfaces. The surfaces of the extensions may be shaped as desired, but are formed to merge smoothly into the adjacent surfaces of the handle.
While the conic members 6 and 7 of the preferred embodiment are portions of cones, while the conic members 8 and 9 are portions of conoids, it will be understood that members 6 and 7 may be sections of conoids, or members 8 and 9 may be sections of cones. Preferably, however, the members of each pair, such as the pair 6 and 7, or the pair 8 and 9, will be similar. Preferably, also, the height of the members of one pair, such as the pair 8 and 9, from base to apex, will be shorter than the height of the other pair, such as the pair 6 and 7. Preferably, also, the shorter pair will be located at the rear of the handle with the apex pointed toward the front, while the longer pair will be located at the front of the handle with the apex pointed toward the rear.
It will be understood that the exposed surfaces of each of the members 6, 7, 8 and 9 may be modified in order to fair into and merge smoothly with the exposed surface of the next adjacent member and with the exposed sur face of the tetrahedron 1, or in order to conform to design requirements for specific purposes or uses. One example of a typical modification is illustrated in FIGS. 4 and 5 in which the surface contours of each of the conic members 6a, 7a, 8a and 911 have been modified to fair into and merge smoothly with the surfaces of the next adjacent member.
A different type of modification is illustrated in FIGS. 6 and 7. The handles of FIGS. 1 to 5 are intended primarily for uses in which the handle is to be rotated, as for example in the use of a screw driver, or for other uses in which a straight handle is required, such as tennis racquets, golf clubs, and fishing rods. In many cases, however, handles having a slightly curved longitudinal axis are required or are desirable, particularly when such handles are used for pushing, pulling or lifting operations. Such handles are frequently required for flatiron handles, door handles, electric tool handles, luggage handles and the like.
In FIGS. 6 and 7, I have illustrated the manner in which the invention may be modified to satisfy such requirements, merely by slightly curving the longitudinal axes of the tetrahedron 21 and of the conic members 26, 27, 28 and 29, as shown in the exploded view of FIG. 6. In FIGS. 6 and 7 are also illustrated typical extensions 34 and 35 of such handle as might be suitable for use as a flatiron handle, for example.
It will be understood that the invention may be variously modified and embodied within the scope of the subi n fl l i I claim as my invention:
1. A handle having a hand grip portion, said hand grip. portion comprising a tetrahedron the faces of which are four isosceles triangles which are bounded by edges joining the apices of the triangles, the legs of the triangles being substantially longer than their bases, said triangles comprising two pairs in which the triangles of each pair have a common base and in whichv the apices of the triangles of one pair point in the opposite direction from the apices of the triangles of the other pair, the apices of the pairs of triangles being spaced apart a distance equal to the length of the common base of the other pair, each of the triangular surfaces being covered, at least in part, by a conic member having an exposed conic surface forming a gripping surface for a portion of the hand.
2. A handle as claimed in claim 1 in which certain of said conic members comprise a portion of a cone formed by taking a longitudinal section therethrough.
3. A handle as claimed in claim 1 in which certain of said conic members comprise a portion of a conoid formed by taking a longitudinal section therethrough.
4. A handle as claimed in elaim l in which certain of said conic members comprise a portion of a cone formed by taking a longitudinal section therethrough and certain other of said conic members comprise a portion of a conoid formed by taking a longitudinal section therethrough.
5. A handle as claimed in claim 1 in which the height from base to apex of certain of said conic members is less than the height from base to apex of the triangles at least partially covered thereby, and in which a portion of said triangles is exposed as a gripping surface for a portion of the hand. 7
6. A handle as claimed in claim 1 in which certain of said conic membeps comprise a portion of a cone formed by taking a longitudinal section therethrough and certain other of 'said conic members comprise a portion of a conoid formed by taking a longitudinal section therethrough, and in which the height from base to apex of said conoid portions is less than the height from base to apex of the triangles at least partially covered thereby, and in which a portion of said triangles is exposed as a gripping surface for a portion of the hand.
7. A handle as claimed in claim 1 in which the longitudinal axis of said tetrahedron is curved slightly.
References Cited in the file of this patent UNITED STATES PATENTS D. 100,685 Curtiss Aug. 4, 1936 D. 104,484, Weinig May 11, 1937 1,860,561 Warner May 31, 1932
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US1860561 *||Jul 26, 1930||May 31, 1932||Stanley Works||Handgrip|
|USD100685 *||Jun 25, 1936||Aug 4, 1936||Design for an outside door handle|
|USD104484 *||Jul 23, 1936||May 11, 1937||Design for a handle for a cooking|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3269399 *||Aug 3, 1964||Aug 30, 1966||Alfred A Smith||Combined handle and hand grip for crutches|
|US3517678 *||Dec 31, 1968||Jun 30, 1970||Robert B Gilsdorf||Hand grip for crutch|
|US3995650 *||Sep 10, 1975||Dec 7, 1976||Lumex, Inc.||Adjustable positioned handgrip for canes, crutches, walkers and other ambulatory aids|
|US4038719 *||Oct 3, 1975||Aug 2, 1977||Bennett John F||Handle for tools and sporting equipment|
|US4117593 *||May 17, 1977||Oct 3, 1978||Dimi Piligrino||Knife|
|US4934222 *||Jul 24, 1985||Jun 19, 1990||Snap-On Tools Corporation||Ergonomic tool|
|US5036446 *||Sep 19, 1990||Jul 30, 1991||Roberto Quintanilla||Lamp handle cover system for surgical lamps|
|US5230154 *||Sep 28, 1990||Jul 27, 1993||Bettcher Industries, Inc.||Modular power-driven rotary knife, improved handle and method|
|US5400511 *||Jul 26, 1993||Mar 28, 1995||Bettcher Industries, Inc.||Thumbpiece for modular power-driven knife|
|US5791055 *||Mar 29, 1996||Aug 11, 1998||Zwilling J.A. Henckels Ag||Knife handle|
|US5862571 *||Jan 10, 1997||Jan 26, 1999||Hp Intellectual Corp.||Comfort grip handle and process|
|US6024903 *||Nov 17, 1998||Feb 15, 2000||Hp Intellectual Corp.||Process for making a comfort grip handle|
|US7228632||May 31, 2002||Jun 12, 2007||Calphalon Corporation||Cutlery implement|
|US8615888 *||Jun 30, 2009||Dec 31, 2013||Dexter-Russell, Inc.||Impaired grip knife|
|US9260282 *||Sep 7, 2012||Feb 16, 2016||Ryan Michael Laverty||Method of opening a can with an opening device|
|US20100325901 *||Jun 30, 2009||Dec 30, 2010||Carol Catalano||Impaired grip knife|
|US20140069065 *||Sep 7, 2012||Mar 13, 2014||Ryan Michael Laverty||Can opening device|
|DE1298060B *||Jul 31, 1967||Jun 19, 1969||Werner Fa Hermann||Werkzeugheft|
|U.S. Classification||16/430, 16/DIG.120, 135/72, 30/340, D08/107|
|Cooperative Classification||B25G1/102, Y10S16/12|