Abstract:
The inventors have designed a tool 1 to be struck, or a striking tool, with a fiber-reinforced polymeric disc (collectively referred to as an "impact tool"), or alternatively, a ribbed cap with novel material and shape characteristics, that will not suffer metal spall and the attendant dangers from noise and from spalling and flying or cutting metal slivers, i.e. a catastrophic failure of part or all of a tool. By further modifying the working end of the tool, impact effectiveness can be maintained. Other tools such as impact wrenches, impact tools, jackhammers, electric hammers, air hammers, wedges, spikes, hammers, mallets or other tools being struck or striking forcibly benefit from the invention. Also contemplated is a one piece cap with rounded edges and with molded, rounded structural reinforcing ribs.
Abstract:
A soft tissu prosthesis comprising a tubular braid (6) having regions of stiffness and elasticity provided by stiff and elastomeric components (12) disposed within a channel enclosed by the tube and/or within the braid (6), and means defining a transition region (7) for minimizing relative motion among the braid components, the stiff components and the elastomeric components.
Abstract:
This reinforcing band (1) for restoring a soft tissue, such as a tendon or a ligament, comprises a textile component with at least one free edge (2, 4). In addition, the or each free edge is folded back into an inner volume of the textile component in such a way as to define an attachment edge (6, 8) suitable for attachment to the soft tissue.
Abstract:
An impacting tool, such as a jackhammer or electric hammer is proposed to be modified by a high modulus polymeric material, or metal of lower relative modulus than surrounding metal such as that of a piston. An interchangeable tool head is proposed to have inserted in a cavity in the impacted end such a high modulus polymeric material. Thus the term relatively lower modulus inclusion ("RLMI") has been selected for the descriptive term. By using such relatively lower modulus material for an inclusion, which inclusion can be an insert, and modification of the piston or ram or impacting end of the tool, and additionally, if desired, the stop end of the piston or ram, the invention enables reduction of noise and vibration without substantially diminishing impact effectiveness and working time. Additionally, the working end of a cutting or impacting tool can be modified to a sharper angle because of diminished force through such relatively lower modulus inclusion. The edge angle, of for instance a chisel, may be modified to take advantage of mechanical changes resulting from the relatively lower modulus inclusion.
Abstract:
ATP yarns having high twist efficiency (low residual twist) as well as methods for increasing the self plying action that occurs in ATP yarn processing. The self plying action and the ATP yarn structure may be improved by increasing the convergence angle of the singles twist yarns to above 50 degrees (compared to current values of 0 to 35 degrees). The increased convergence angle permits an increase in the ply twist above the level possible by self plying alone. This results in a yarn with reduced residual singles twist. An array of singles torque jets and an optional ply torque jet has been developed to achieve a high convergence angle. The angle between the singles torque jet axes can be varied from 0 to 180 degrees.
Abstract:
An impacted too, such as a jackhammer or electric hammer is proposed to be modified by a high modulus polymeric material, or metal of lower relative modulus than surrounding metal such as that of a piston. An interchangeable tool head is proposed to have inserted in a cavity in the impacted end such a high modulus polymeric material.
Abstract:
The invention is a tool to be struck (Fig. 1), or a striking tool, or a cap (Fig. 4, 6, 8), that will not suffer metal spall and the attendant dangers of spalling and flying or cutting metal slivers. The preferred mode is on a chisel. The chisel would have a striking end cut square to the shaft. Other tools such as jackhammers, wedges, spikes, hammers, mallets would benefit from the invention.
Abstract:
An elongated pile article having a support strand (32) for attachment to a plurality of yarn bundles (20), the yarn bundles including a dense portion with the filaments bonded to each other and bonded to the support strand, a pile surface structure comprised of a plurality of elongated pile articles placed one next to the other, and a method and apparatus for making the elongated pile article.
Abstract:
This invention consists of a polymer insert, which term can include a cap or face, added to a metal hammer to eliminate metal to metal contact on direct hits, and minimize metal to metal contact on indirect hits. The polymer insert is selected to be objectively "tough," in the sense of withstanding repeated impact, while transmitting force to hit an object while also not failing. The polymer insert is positioned between the hammer face and the item to be struck - usually a nail. The polymer insert can be secured to the hammer by: a rigid retainer sleeve, preferably of metal or plastic; a pressed-on shaped polymer cap; or a polymer insert pressed into a recess in the hammer.
Abstract:
This invention consists of a polymer insert, which term can include a cap or face, added to a metal hammer to eliminate metal to metal contact on direct hits, and minimize metal to metal contact on indirect hits. The polymer insert is selected to be objectively "tough," in the sense of withstanding repeated impact, while transmitting force to hit an object while also not failing. The polymer insert is positioned between the hammer face and the item to be struck - usually a nail. The polymer insert can be secured to the hammer by: a rigid retainer sleeve, preferably of metal or plastic; a pressed-on shaped polymer cap; or a polymer insert pressed into a recess in the hammer. The polymer face presented on the metal hammer prevents metal-to-metal contact and thereby reduces noise and vibration; improves ergonomics; improves safety because it reduces the risk of metal fragments from a hammer head or brittle nails and limits the risk of sparking, reduces marring, and enhances user comfort.