MXPA98005838A - Hammer of uña de golpe mue - Google Patents

Abstract

The present invention relates to a hammer of impact absorbing nail, characterized in that it comprises: a head that includes a portion of head of striking and a portion of nail extending generally opposite to the portion of head of hitting, the head defining a axis, a handle attached to the head and extending from a lower surface of the head generally perpendicular to the head, the head defining an opening that extends through it, the opening defining a generally transverse axis away from the head and, a groove extending from the opening to the lower surface

Description

HAMMER HIT UFFLING HAMMER BACKGROUND OF THE INVENTION FIELD PE INVENTION This invention relates to martels for nailing nails and striking various objects and. in particular, hammers absorbers of blows or of dead blow that reduce the recoil and the vibration caused by the blow of the hammer. More particularly »the present invention relates to a hammer absorber t'e collisions without rebound that includes a characteristic of nail.

DESCRIPTION OF THE RELATED TECHNIQUE When a percussive tool a. just like a hammer »hits the surface of an object, part of the energy produced by the blow is used to perform the desired work (for example» taking out a nail), part becomes heat, and part is dissipated through the hammer . The energy that dissipates through the hammer often produces inconvenient results such as hammer recoil from the striking surface or excessive vibration of the hammer. The inconvenient results produced by the blows of the hammer have been a persistent problem for the manufacturers of hammers and other percussive tools. Many mart l users prefer the vibration reduction sensation of wood-handled hammers »instead of integral hammers with steel handle / head. A common perception is that fatigue is reduced at the end of the day when a hammer is used with a wooden handle instead of a steel handle. However, wood handle hammers will vary "typically" in the joint between the handle and the steel head due to the levering action to remove nails. To solve this disadvantage, many manufacturers produce integral hammers with steel handle / head excellently resistant to the action of pulling nails »but the shock absorption characteristic of the wooden handle is lost. These problems are discussed in an article entitled "IMail ng Basics" by Larry Haun in Fine Ho ebuil g »July 1997. p. BO. In the past, several attempts had been made to reduce the inconvenient results produced by the impact of a hammer. Hammers that have minimum rebound or recoil characteristics are sometimes referred to as "dead blow" hammers, impact absorbing hammers or vibration reducing hammers. The terms "dead blow", "shock absorbers" and "vibration reducers" are used reciprocally in the present invention. One of the first attempts reflected in the prior art to produce a dead blow hammer or shock absorber is the patent of E.U.A. No. 1,045,145. of E.O. Hubbard ("Hubbard") »issued in November 1912. As Hubbard explains» when Hubbard's hammer is hit against a surface »the striking head will be forced against a cushion» so that the cushion absorbs part of the shock of impact produced by the coup. After Hubbard, several other attempts were made to reduce the results and benefits of a hammer blow and. in particular, to reduce the rebound or recoil produced when a hammer blow occurs. Several of the first approaches to reducing recoil in hammers are summarized in the U.S. patent. No. 2,604 »914 of Kahlen (" Kahlen "). issued in July 1952. In particular »Kahlen states that» around 1952 »the known methods for reducing recoil of the hammer included placing an ear» a round impact load or a load of pulverized material in a chamber immediately behind a surface of hammer striking »so that the object (s) placed behind the striking head absorbed part of the forces produced by the hammer blow. This particular approach described in Kahlen included the placement of a load of hard »heavy» particles of irregular shape in a chamber immediately behind the hammering head of a hammer. In addition to the solutions that include cushions and loads »several solutions using elastic members» such as separators and elastic springs »were proposed to solve the problems of hitting the hammer» according to which part of the energy developed from the blow of the hammer was dissipates through the elastic member. Other designs »such as that described in the patent of E.U.A. No. 5, 408,902 »use a" delay mass "which is positioned to move towards the hammer head striking portion when impacting" thus impacting the striking portion to reduce backward movement of the hammer. These first approaches involve one or more difficulties. For example. the use of sliding weights or ears behind the hammering head is problematic because the weights themselves develop potential energy when the hammer hits a surface and tends to recede, thus causing inconvenient vibration or oscillation of the hammer. In addition »full hammers are limited: (i) because the requirement of a hollow chamber means that the size of these hammers is out of proportion to the weight; and (i) because "unless a special blow mix is used" the blow is often not useful to prevent recoil of the hammer. In addition, in the dead blow hammers of the prior art the apalcar and the ability to pull nails from the common nail hammers has been lost in the attempt to reduce vibration and recoil. Another discussion of the prior art and its related drawbacks are provided in the U.S. patent. No. 1,045 »145» the patent of E.U.A. No. 2,604,914; the patent of E.U.A. No. 2 »928, 444; the patent of E.U.A. No. 4,831,901, "U.S. Patent No. 5,118,117, U.S. Patent No. 5" 40B "902, and German Patent No. 1,273,449," There is then a need for a shock-absorbing diamond. which includes a nail feature for pulling nails and performing leverage "and which solves other problems associated with shock absorbing or dead blow hammers of the prior art.

BRIEF DESCRIPTION OF THE INVENTION In one aspect of the invention, a shock absorbing hammer includes a head having a striking head portion with a lower surface "a nail portion which is opposite and extends generally opposite the striking portion of the head" and a handle extending generally perpendicular to the striking head portion and the nail portion. The head defines an opening, and a slot is formed to form combination closure pieces to prevent the slot from fully opening. In another aspect of the invention, a shock absorber nail includes a handle, a striking head including a striking surface, and an insert member extending from the striking head opposite the striking surface. A fingernail is attached to the handle, and the handle defines a cavity having an axis generally transverse to the handle. The shaft cavity adapted to slidably receive the insertion member. The handle defines a first hole in it and the insertion member defines a second hole having a diameter greater than the diameter of the first hole. A retaining member is positioned within the first and second holes to retain the insertion member within the cavity and allow the striking head to slide relative to the handle.

BRIEF DESCRIPTION OF THE DRAWINGS Other objects and advantages of the invention will become apparent upon reading the following detailed description and after reference to the drawings, in which: Figure 1 is a top view of an exemplary embodiment of a split-head nail hammer; having a closing groove. FIG. 2 is a top view of an alternate embodiment of a split-head nail hammer having a straight groove; Figure 3 is a front exploded perspective view of an exemplary embodiment of a nail hammer with sliding head in accordance with the invention; Figure 4 is an exploded bottom perspective view of the exemplary embodiment of Figure 3; and Figure 5 is a cross-sectional top view of the exemplary embodiment of Figure 3. Although the invention is susceptible to various modifications and alternative forms "specific embodiments thereof have been shown by way of example in the drawings" and describe in detail in the present invention. Nevertheless. it should be understood that the description of the specific embodiments is not intended to limit the invention to the particular forms described, but on the contrary, the purpose is to cover all equivalent and alternative modifications that are within the spirit and scope of the invention. . as defined by the attached re vindications.

DESCRIPTION PE AgAQA PE ^ INVETION Returning to the drawings and in particular to FIGS. 1 and 2, a dihedral head mode of a shock absorber nail in accordance with this invention is illustrated. The split-head nail hammer 10 comprises a head 11 having a striking portion 12 and a nail portion 14. The nail portion 14 defines a generally V-shaped notch (not shown) for jamming nails when removed . A handle IS is attached to the head 11 and can be integrally formed therewith. A slot 18 is cut in the head 11 so that mass is the same equal to the striking portion 12 and the nail portion 14. The slot 18 is about 0.0254 cm to 0.1016 cm "and can be made using laser cutting» ED wire cut or abrasive water propulsion cut. The slot 18 is directed to the lower edge of the hammer head 11 so that the striking portion 12 and the nail portion 14 contact through the slot 18 in a contact area 19 to give the favorable effect of delay of dough . A hardened wedge (not shown) can be placed in the slot 18 to control the slot space 18. This could be desirable for a manufacturing technique such as water jet cutting »which can efficiently and consistently create 0.1016 cm spaces »But typically» not significantly less. Therefore »if a space formed by slot 18 of 0.0381 cm is intended to achieve, for example, a wedge with a thickness of 0.0635 cm can be used to provide the desired space of 0.038. The hammer head 11 defines a hole 22 formed therein »which can be filled with an elastic connection 24» which can consist of a relatively low durometer rubber connection. The slot 18 extends from the hole 22 to the bottom of the hammer head 11. A connection region 20 is located on the head 11 opposite the slot 18 »connecting the blow portion 12 and the nail portion 14 of the head 11. In addition to connecting the blow portion 12 and the finger portion 14 »the connection region 20 acts as a flat embedment spring» allowing the two head portions to contact each other in the contact area 19 when the hammer hit. This greatly reduces the recoil of the hammer and the vibration of the hand »in turn» reducing fatigue. The hole 22 of the head 11 has several purposes: (i) it defines precisely the amount of material in the connection region 20 »thus allowing fine control of the hardness of the embedment flat spring by varying the size of the hole 22» <ii) your radio serves as a pressure monitor; and (i i) the elastic connection 24 that fills the hole 22 further defines the hardness of the embedment flat spring and minimizes ratchet-shaped vibrations that could otherwise occur with a hammer blow. The slot 18 goes from the hole 22 to the bottom of the hammer head 11. which allows the slot 18 to close when the nail portion 14 is used to remove nails, thus preventing high tensile forces from occurring. In the embodiment illustrated in Figure 1. the slot 18 is formed so that the striking portion 12 and the nail portion 14 of the hammer head 11 form "combination" closure pieces 26 ensuring that the slot 18 does not open completely under any circumstances. An alternate embodiment of the head division of the nail hammer 10 with a straight slot 18 is illustrated in Figure 2. Figures 3. 4 and 5 illustrate a sliding head embodiment of a shock absorber nail hammer in accordance with this invention. The sliding head nail hammer 50 generally includes a handle / finger piece 52. and a strike head piece 54. The handle / finger piece 52 consists of a handle 56 and a nail portion 57 »which can be integrally formed to ensure adequate strength to nail. Alternatively, the handle / finger part 52 can be a two-part construction with the finger portion 57 attached to the handle 56 by some suitable means known to those skilled in the art. The nail portion 57 includes a generally V-shaped notch 58 formed therein to jam nails when a nail is removed. The handle / finger piece 52 defines a cavity SO having an axis generally transverse to the handle and the head striking piece 54 defines a serration member 62 designed to be slidably received by the cavity SO. A compressible diverting element 64 is placed in the cavity 60 between the handle / finger part 52 and the head striking piece 54 »and a retention member co or a pin S6 is received by a first pin receiving hole 67 formed in the handle / finger piece 52 and a second pin receiving hole formed in the hitting head piece 54. The pin 66 is inserted in the pin receiving holes 67 and 68 to hold the hammer 50 together. The diameter of the pin receiving hole 68 is larger than the diameter of the pin 66. thereby allowing the insertion member 62 to slide a limited distance into the cavity 60. In one embodiment of the invention, the pin 66 has a diameter of about of 0.3175 cm. with the diameter of the pin receiving hole 68 of about 0.4216 cm greater than the diameter of the pin 66. The handle / finger part 52 and the head piece 54 are sized so that. when assembled, there is a space 70 (shown in Figure 5) provided so that the striker head piece 54 can be moved with respect to the handle / finger part 52 when the insert member 62 slides into the cavity 60. A cover 72 covers the space 70. When there is a hammer blow »the insert member 62 slides inside the cavity 60. allowing the handle / finger part 52 and the head part 54 to move a to the other, so that hardened secondary contact surfaces 73 and 74 contact each other. providing a ration-damping effect. Therefore, the handle / finger part 52 functions as the delay mass of this modality. The compressible element S4 deflects the head striking piece 64 from the handle / finger part 52. with the pin 66 acting as the stop for this diverting force. The compressible element may consist of. for example »a compression spring, an elastic connection» or the like. The clearance 70 between the handle / finger part 52 and the head striking piece 54 is between 0.0254 cm to approximately 0.1016 cm in a particular embodiment according to the invention. The previous description of the different modalities is made by way of example "and not for purposes of limitation. Many variations can be made to the described embodiments without departing from the scope and the essence of this invention.

Claims (25)

1. NOVELTY OF THE INVENTION REIVINPICACIQNE5 1. - A shock absorbing nail hammer consisting of: a head including a striking head portion having a lower surface and a nailing portion generally facing the striking head portion »a handle attached to the head and generally extending perpendicular to the head; the head defines an opening in it »and a slot extending from the opening to the lower surface.
2. 2. The impact absorber nail hammer according to claim 1. further characterized in that it consists of the opening that is filled with an elastic connection.
3. 3. The hammer of nail absorber of shock in accordance with claim 2 »characterized in that the elastic connection consists of a rubber connection.
4. 4. A hammer of a shock absorbing nail according to claim 1, characterized in that the groove has a width of approximately 0.0254 to 0.1016 cm.
5. 5. The hammer of absorber nail shocks according to claim 1. characterized in that it consists of a wedge placed within the slot to adjust the width of an opening defined by the slot. 6. - The impact absorber nail hammer according to the rei indication 1. characterized in that it consists of the groove formed so that the head portion of hitting and the nail portion form closing pieces of 7.- The nail hammer absorber of shocks according to claim 1. characterized in that it consists of the groove extending straight from the opening to the lower surface. 8. The impact absorber nail hammer according to claim 1, characterized in that the slot is positioned in such a way that it closes when the nail portion is used to remove nails. 9. The hammer of nail absorber of shock in accordance with claim 1 »characterized in that the groove and the handle generally define an angle less than 45 °. 10. The impact absorbing hammer according to claim 1, characterized in that the opening defines a connection region opposite the slot connecting the striking portion and the nail portion. 11. The impact absorbing hammer according to claim 10 further characterized in that the connection region acts as a recessed flat spring that allows the striking portion and the nail portion to contact each other when a hammer blow is struck. . 12. The impact absorbing hammer according to claim 11, characterized in that the opening has a certain size so that the desired hardness of the recessed flat spring is obtained. 13. The impact absorbing hammer according to claim 1, characterized in that the handle is integrally formed with the head. 14.- A hammer of nail absorber of shocks that consists of: a handle; a striking head including a primary striking surface and an insert member extending from the striking head opposite the striking surface; a finger attached to the handle »the handle defining a cavity thereon with an axis generally transverse to the handle» the first hole being adapted to slidably receive the insertion member; a retention member; the handle defining a first hole in it and the nsertion member defining a second hole with a diameter greater than the diameter of the first hole; and the retaining member being positioned within the first and second holes for retaining the insertion member within the cavity and allowing the striking head to slide with respect to the handle. 15. The impact absorber nail hammer of claim 14 further comprises: the striking head including a secondary striking surface opposite the primary striking surface; and the handle including a secondary surface of blow opposite the nail; characterized in that the secondary surfaces contact each other when the hammer strikes to reduce vibration. 16. - The shock absorber nail ring of the reign indication 14 further characterized in that it consists of a diverting element for placing the striking head outside the handle to form a space between the striking head and the handle. 17. The hammer of the impact absorber nail according to claim 14, characterized in that the diverter element consists of a compression spring. 18.- The hammer of nail shock absorber according to claim 14 »characterized in that the diverting element consists of an elastic connection. 19. The hammer of a shock absorber nail according to claim 14, characterized in that the space is approximately 0.020 to 0.310 cm wide. 20. The hammer of nail shock absorber of claim 16 consists of a cover to cover the space. 21. The shock absorber hammer of claim 14, characterized in that the retaining member consists of a retaining pin. 22. The hammer of the impact absorber nail of the rei indication 21, characterized in that the retaining pin has a diameter of approximately 0.310 cm. 23.- The hammer of the impact absorber nail of the rei indication 21, characterized in that the second hole has a diameter that is approximately 0,040 cm greater than the diameter of the retaining pin. 24. The shock absorbing hammer of claim 14, characterized in that the nail is integrally formed with the handle. 25.- A hammer to hit objects consisting of: a handle; a nail head attached to a handle; a striking head attached to the nail head "characterized in that the construction of the striking head is such that vibrations are produced in the handle when an object is struck by the striking head" and means to absorb at least a portion of vibrations.