WO2005054705A2 - Appareil pour l'amortissement de vibration de choc dans des outils a main - Google Patents

Appareil pour l'amortissement de vibration de choc dans des outils a main Download PDF

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Publication number
WO2005054705A2
WO2005054705A2 PCT/US2004/039734 US2004039734W WO2005054705A2 WO 2005054705 A2 WO2005054705 A2 WO 2005054705A2 US 2004039734 W US2004039734 W US 2004039734W WO 2005054705 A2 WO2005054705 A2 WO 2005054705A2
Authority
WO
WIPO (PCT)
Prior art keywords
dampening
drumstick
vibration
hammer
cap
Prior art date
Application number
PCT/US2004/039734
Other languages
English (en)
Other versions
WO2005054705A3 (fr
Inventor
Brian Judd
Original Assignee
Brian Judd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Brian Judd filed Critical Brian Judd
Publication of WO2005054705A2 publication Critical patent/WO2005054705A2/fr
Publication of WO2005054705A3 publication Critical patent/WO2005054705A3/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/373—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by having a particular shape
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
    • A63B60/54—Details or accessories of golf clubs, bats, rackets or the like with means for damping vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G1/00—Handle constructions
    • B25G1/01—Shock-absorbing means

Definitions

  • the present invention relates generally to dampening impact vibration in manual tools. More particularly, the invention relates to dampening impact vibration in manual tools having an elongated rigid shaft where the vibration is transmitted from the impacted end of the shaft into the hand of the user holding and forcing the shaft.
  • Drumsticks are held in a few standard positions, one common position is hold by hand the drumstick about 1/3 of the way from what is referred to as the butt end. The drummer will typically pivot the drumstick at the holding point and strike a drum with the striking end of the drumstick.
  • Another exemplary problem is that players usually do not want to purchase a special kind of drumstick so modified, which are often more costly due to the higher manufacturing cost, or similarly modify their own drumstick. Moreover, many players dislike such conventional approaches as the overall "feel" of the drumstick is changed (e.g., a new center of mass), which feel is often an important factor in optimal playing performance. Significant retraining by the musician is typically required to adapt to a new drumstick feel. [0006] Other known techniques attempt to isolate the drumstick from the hand by way of a compliant sleeve, or handgrip, on the gripping location of the drumstick.
  • Figure 1 illustrates a side perspective view of a first embodiment directed to an exemplary drumstick dampening cap application
  • Figure 2 illustrates a side perspective view of an instance of the first embodiment mounted onto an exemplary drumstick
  • Figure 3 a illustrates a side perspective view of a second embodiment directed to an exemplary hammer dampening cap application
  • Figure 3b illustrates a side perspective view of an exemplary hex shaped hammer dampening-cap in accordance with an embodiment of the present invention
  • Figure 4 illustrates a side perspective view of an instance of the second embodiment mounted onto an exemplary hammer
  • Figure 5 illustrates a side perspective, transparent view showing the internal structure of an exemplary boss standoff embodiment directed to a hammer application
  • Figure 6 illustrates a rear perspective, transparent view showing the internal structure of an exemplary ring standoff embodiment directed to a hammer application.
  • a device for dampening the impact vibration of elongated manual tools that have a handle, such as drumsticks and hammers.
  • the device includes means for dampening the vibration caused when striking tool onto a hard surface, and means for removably joining the dampening means to the end of the tool's handle.
  • Some embodiments further include means for standing off the dampening means from being fully applied onto the end of the tool's handle.
  • the present invention is directed to dampening impact vibration in manual tools having an elongated rigid shaft where the vibration is transmitted from the impacted end of the shaft into the hand of the user holding and forcing the shaft of the tool.
  • This dampening is preferably achieved by adapting the non-striking end of the manual tool with what is herein referred to as a dampening cap according to the teaching of the following detailed description and exemplary embodiments.
  • Figure 1 illustrates a side perspective view of a first embodiment directed to an exemplary drumstick dampening cap application.
  • Drumstick dampening cap 100 is designed to snuggly fit onto the end of a drumstick.
  • Drumstick dampening cap 100 is preferably fabricated from a compliant material (e.g., relatively flexible, not stiff), including, but not limited to, thermoplastic elastomers (e.g. plastic moldable rubbers such as Santoprene or Krayton) and common rubber.
  • the first embodiment may be formed into any suitable shape to properly fit onto the end of the desired type of drumstick.
  • Figure 2 illustrates a side perspective view of an instance of the first embodiment mounted onto an exemplary drumstick.
  • the addition of the present drumstick dampening-cap to the outside of the drumstick's butt tends to dampen the internal vibration within the drumstick's shaft, and thereby reduce the vibrational energy transmitted to the player' s hand.
  • a dampening cap made of a stretchable material, for some drumstick application may be three quarters of an inch long and have a suitable diameter to stretch-fit onto the desired range of drumstick butt diameters.
  • One embodiment of the present invention is designed to stretch and fit over the butt of a drumstick.
  • Such embodiments of the present drumstick dampening-cap are made of sufficiently stretchable materials that permit easy stretch fitting onto a wide range of drumsticks. That is, making the hammer dampening-cap of a suitably stretchable material that the stretch fit capability accommodates a relatively unrestricted range of hammer butt shapes and sizes, the, which is especially useful for hammers that often have a hex or odd shaped butt end.
  • Compliant embodiments of the present invention may be manufactured according to known methods including but not limited to, injection molding and thermoforming.
  • an aspect of the present invention provides that in some applications, the present anti- vibration, dampening cap may be slid fully or partially onto the drumstick butt.
  • the degree of dampening may be controlled by how complete the present anti-vibration, dampening cap (dampening cap) is fitted onto the drumstick butt. That is, when the drumstick is fully placed within the dampening cap a minimum level of dampening is achieved, and when the drumstick is attached at the open end of the present dampemng cap, a maximum level of dampening is achieved.
  • the material chose may also increase or decrease the amount of dampening achieved.
  • a more compliant material that is partially fitted on the butt of the drumstick will tend to oscillate back and forth with respect to the drumstick shat, thereby dissipating (i.e., dampening) additional vibrational energy beyond only the inertial dampening gain by virtue of adding mass to the drumstick.
  • users of the present dampening cap will readily be able to learn the appropriate positioning of the dampening cap onto the drumstick that achieves their desired level of vibration dampemng.
  • Preferred embodiments of the present invention make the dampemng cap out of a stretchable material that provides for the easy and convenience of stretch fitting the stretchable dampening cap over a wide range of drumstick butt diameters.
  • Some alternate embodiments of the present invention may be formed only partially of stretchable materials at their butt receiving end so that they are only capable of partially stretch fitting onto the butt.
  • Alternative means for joining a drumstick dampening-cap, according to the present invention, to the drumstick butt will be readily apparent to those skilled in the art.
  • an aspect of dampening cap embodiments being made of a relatively soft material is that drum players may optionally and easily strike the drum with the dampening cap end of their drumstick to achieve a soft striking sound (e.g., a soft attack) when desired, thereby potentially expanding the range of sounds of drumstick adapted according to the present invention can achieve.
  • the degree of attack may be controlled to some degree by properly selecting the proper durometer or stiffness of the foregoing described compliant material used.
  • conventional drumsticks would require that a different drumstick with a felt tip be used, which requires additional skill to switch during play between drumsticks with different attacks.
  • the present dampening cap does not significantly alter the feel of the drumstick to the player; hence, no retraining is required to attain the same level of performance as without attaching the present dampemng caps.
  • the present dampening cap dampens at least a portion of the vibration that is transferred to a user's hand, fatigue and related injuries tend to be reduce, or completely eliminated. Moreover, by dampening energy away from the user's hand, a more solid and more powerful strike on the drum surface is typically possible.
  • FIG. 3a illustrates a side perspective view of a second embodiment directed to a hammer dampemng cap application.
  • a exemplary circular hammer dampening cap 300 is shown in the Figure.
  • Figure 3 b illustrates a side perspective view of an exemplary hex shaped hammer dampening-cap 350 in accordance with an alternate implementation of the second embodiment of the present invention, which is suitable to fit a hex and/or non-hex (e.g., circular, oblong, elliptical, etc.) shaped hammer butt.
  • a hex and/or non-hex e.g., circular, oblong, elliptical, etc.
  • FIG 4 illustrates a side perspective view of an instance of the second embodiment mounted onto an exemplary hammer.
  • Hammer dampening-cap 350 is shown attached to the hammer's butt. Similar to the forgoing drumstick problem, when using hammer dampening-cap 350, hammer users (e.g., carpenters, mechanics, etc.) may be substantially protected from the severe vibration transferred to his or her hand, wrist, and forearm upon striking a hard surface with the hammer.
  • the embodiment show is removable and may be added as an aftermarket impact vibration-dampening product to the consumer's hammer of choice.
  • the hammer dampening-cap is fabricated from a compliant material as described above.
  • a compliant hammer dampening-cap properly fitted onto to the hammer's butt end will at least in part absorb and cancel out vibration in the hammer shaft after impact, thereby reducing, or eliminating, transfer to the user's hand, wrist, and forearm.
  • Some embodiments use compliant materials that are to some degree stretchable, such that such a stretchable hammer dampening-cap can stretch fit on the end of the hammer.
  • Alternate embodiments may be made of stiff or hard materials that may be press-fitted or even compliantly joined to the hammer.
  • FIG. 5 illustrates a side perspective, transparent view showing the internal structure of an exemplary boss standoff embodiment directed to a hammer application.
  • one standoff approach is to include molded standoff bosses 510 to set a minimum clearance between the end of the hammer butt and roof of dampening-cap 300.
  • Standoff bosses 510 protrude from and are disposed about the inside of the dampening-cap roof.
  • FIG. 6 illustrates a rear perspective, transparent view showing the internal structure of an exemplary ring standoff embodiment directed to a hammer application.
  • Standoff rings 610 protrude from and are concentrically disposed upon the inside of the dampening-cap roof.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

La présente invention a trait à un dispositif pour l'amortissement de vibration de choc d'outils à main de forme allongée comportant un manche, tels que des mailloches et des marteaux. Le dispositif comporte un moyen d'amortissement de la vibration provoquée lors de la frappe de l'outil sur une surface dure, et un moyen pour l'assemblage amovible du moyen d'amortissement à l'extrémité du manche de l'outil. Certains modes de réalisation comporte en outre un moyen pour l'insertion d'une douille entretoise pour le moyen d'amortissement pour qu'il ne soit pas entièrement appliqué sur l'extrémité de manche de l'outil. Dans plusieurs applications, des modes de réalisation de la présente invention contribuent à réduire la fatigue et le risque de blessure dus à la transmission de vibrations de choc à l'utilisateur.
PCT/US2004/039734 2003-11-26 2004-11-26 Appareil pour l'amortissement de vibration de choc dans des outils a main WO2005054705A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US52544603P 2003-11-26 2003-11-26
US60/525,446 2003-11-26

Publications (2)

Publication Number Publication Date
WO2005054705A2 true WO2005054705A2 (fr) 2005-06-16
WO2005054705A3 WO2005054705A3 (fr) 2006-08-03

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PCT/US2004/039734 WO2005054705A2 (fr) 2003-11-26 2004-11-26 Appareil pour l'amortissement de vibration de choc dans des outils a main

Country Status (1)

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WO (1) WO2005054705A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3939964A1 (fr) 2008-12-31 2022-01-19 Ardelyx, Inc. Combinaisons d'inhibition d'un antiport a mediation par nhe dans le traitement de troubles associes a une retention de fluide ou a une surcharge de sel et de troubles du tractus gastro-intestinal
EP4234016A2 (fr) 2019-02-07 2023-08-30 Ardelyx, Inc. Dérivés d'acide glycyrrhétinique destinés à être utilisés dans le traitement de l'hyperkaliémie
EP4397366A2 (fr) 2017-08-04 2024-07-10 Ardelyx, Inc. Dérivés de l'acide glycyrrhétinique pour le traitement de l'hyperkaliémie

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5179237A (en) * 1991-08-21 1993-01-12 Easton Aluminum, Inc. Sleeved metal drumstick
US6863629B2 (en) * 2001-08-27 2005-03-08 Thomas Falone Vibration damping tape

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5179237A (en) * 1991-08-21 1993-01-12 Easton Aluminum, Inc. Sleeved metal drumstick
US6863629B2 (en) * 2001-08-27 2005-03-08 Thomas Falone Vibration damping tape

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3939964A1 (fr) 2008-12-31 2022-01-19 Ardelyx, Inc. Combinaisons d'inhibition d'un antiport a mediation par nhe dans le traitement de troubles associes a une retention de fluide ou a une surcharge de sel et de troubles du tractus gastro-intestinal
EP4397366A2 (fr) 2017-08-04 2024-07-10 Ardelyx, Inc. Dérivés de l'acide glycyrrhétinique pour le traitement de l'hyperkaliémie
EP4234016A2 (fr) 2019-02-07 2023-08-30 Ardelyx, Inc. Dérivés d'acide glycyrrhétinique destinés à être utilisés dans le traitement de l'hyperkaliémie

Also Published As

Publication number Publication date
WO2005054705A3 (fr) 2006-08-03

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