Abstract:
A lineman&#39;s hoist that can be operated by a drill or similar device by its engagement with the head bolt. The head bolt is freely disposed with a head shaft and the head bolt is threadably engaged with a threaded shaft to displace the threaded shaft with respect to the bolt shaft. Thus this can move and displace items or wires that may be connected to the first hoist hook or second hoist hook.

Description:
RELATED APPLICATIONS 
       [0001]    None. 
       FIELD OF INVENTION 
       [0002]    This invention relates to lineman&#39;s hoists that are used for working on electrical poles or similar devices. 
       BACKGROUND OF THE INVENTION 
       [0003]    A lineman is a tradesman who constructs and maintains electric power transmission and distribution facilities. The term is also used for those who install and maintain telephone, telegraph, cable TV and more recent fiber optic lines. It is also used to maintain most of the telephone poles in the world. The term refers to those who work in generally outdoor installation and maintenance jobs. Those who install and maintain electrical wiring inside buildings are electricians. 
         [0004]    The current lineman&#39;s hoists are usually made of a strap and ratchet mechanism. One such hoist can be seen at www.cmworks.com. The hoist is usually used to pull wire together at elevated heights, usually working in a lift truck. 
         [0005]    What is needed is a lineman&#39;s hoist that can displace or move a first hoist hook closer to the opposed second hoist hook quickly and safely. 
         [0006]    Multiple embodiments of the system are disclosed herein. It will be understood that other objects and purposes of the invention, and variations thereof, will be apparent upon reading the following specification and inspecting the accompanying drawings. 
       SUMMARY OF INVENTION 
       [0007]    One aspect of the present invention is a lineman&#39;s hoist, comprising: a bolt shaft; a threaded shaft; and a head bolt that can be disposed through said bolt shaft to be threadably engaged with said threaded shaft. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0008]    For a fuller understanding of the invention, reference should be made to the following detailed description, taken in connection with the accompanying drawings, in which: 
           [0009]      FIG. 1  is a pictorial view of one embodiment of the present invention with a square housing; 
           [0010]      FIG. 2  is a pictorial of an embodiment of a left side view of the present invention of 
           [0011]      FIG. 1 ; 
           [0012]      FIG. 3  is a pictorial of an embodiment of a right side view of the present invention of  FIG. 1 ; 
           [0013]      FIG. 4  is a pictorial of an embodiment of a dead end shoe of the present invention; 
           [0014]      FIG. 5  is a pictorial view of an embodiment of a grab eye of the present invention; 
           [0015]      FIG. 6  [LEFT BLANK INTENTIONALLY] 
           [0016]      FIG. 7  is a pictorial view of an embodiment with a travel limiter; 
           [0017]      FIG. 8  is a pictorial view of an the embodiment from  FIG. 7 ; and 
           [0018]      FIG. 9  is a pictorial view of using the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
       [0019]    The following detailed description is of the best currently contemplated modes of carrying out the invention. The description is not to be taken in a limiting sense, but is made merely for the purpose of illustrating the general principles of the invention, since the scope of the invention is best defined by the appended claims. 
         [0020]    Certain terminology will be used in the following description for convenience and reference only, and will not be limiting. For example, the words “upwardly,” “downwardly,” “rightwardly,” and “leftwardly” will refer to directions in the drawings to which reference is made. The words “inwardly” and “outwardly” will refer to directions toward and away from, respectively, the geometric center of the system and designated parts. Said terminology will include the words specifically mentioned, derivatives, and similar words. Also, “connected to,” “secured to,” or similar language includes the definitions “indirectly connected to,” “directly connected to,” “indirectly secured to,” and “directly secured to.” 
         [0021]    In the following detailed description of the preferred embodiments, reference is made to the accompanying drawings, which form a part hereof, and within which are shown by way of illustration specific embodiments by which the invention may be practiced. It is to be understood that other embodiments by which the invention may be practiced. It is to be understood that other embodiments may be utilized and structural changes may be made without departing from the scope of the invention. 
         [0022]    The term “about” or “approximately” as used herein refers to being within an acceptable error range for the particular value as determined by one of ordinary skill in the art, which will depend in part on how the value is measured or determined, i.e. the limitations of the measurement system, i.e. the degree of precision required for a particular purpose. 
       REFERENCE NUMERALS 
       [0000]    
       
           10  present invention 
           20  first hoist hook 
           30  second hoist hook 
           40  attachment means or nylon strap 
           50  threaded shaft 
           60  bolt shaft 
           70  head bolt 
           80  head end of head bolt 
           90  threaded through hole 
           100  extension distance 
           110  threaded end of head bolt 
           120  member 
           130  travel limiter 
           140  channel 
           150  arm 
           200  dead end shoe 
           210  grab eye 
           220  grab eye aperture 
           230  leg 
           240  disc 
           250  disc aperture 
       
     
         [0044]      FIG. 1  illustrates an embodiment of the present invention  10 . The present invention  10  may be comprised of a threaded shaft  50  that may slide leftwardly and rightwardly with respect to a bolt shaft  60 . The bolt shaft  60  may receive a head bold  70  therein. The head bold  70  may be threadably engaged with threads on the inside diameter of the threaded shaft  50 . Whereby when the head bolt  70  rotates in a first direction the threaded shaft  50  moves leftwardly, and when the head bolt  70  rotates in a second direction the threaded shaft  50  moves rightwardly. The movement of the threaded shaft  50  is due to its threaded engagement with the threads of the head bold  70 . 
         [0045]    As illustrated in  FIG. 1  the head bolt  70  may extend through the bold shaft  60  into the threaded shaft  60  so the threads of the threaded head bolt  70  can contact and engage with the threads disposed on the inside diameter of the threaded shaft  50 . This is illustrated in  FIG. 1  with reference numeral  100 , and referred to as the extension distance  100 . In one embodiment the extension distance  100  is ¼ of an inch. In another embodiment the extension distance  100  may be about 1 inch. The extension distance  100  can vary and can be as long as or longer than the length of both the threaded shaft  50  and the bolt shaft  60  combined. 
         [0046]      FIG. 1  also illustrates a first hoist hook  20  disposed on the threaded shaft  50 , and a second hoist hook  30  disposed on the bolt shaft  60 . The threaded shaft  50  may be threadably engaged with the bolt shaft  60  so that the threaded shaft  50  can move in and out with respect to a bolt shaft  60 . 
         [0047]    The threaded shaft  50  may move or displace relative to the bolt shaft  60  by using a cordless drill or similar device by connecting to either the bolt shaft  60  or the threaded shaft  50 . The cordless drill or similar device may connect to the head end of head bolt  80 . As the head end of head bolt  80  is rotated clockwise, for example, the threaded shaft  50  may be displaced rightwardly or toward the head bolt  70 ; and as the head end of head bolt  80  is rotated counterclockwise, then the threaded shaft  50  may be displaced leftwardly or away from the head bolt  70 . 
         [0048]      FIG. 1  also illustrates a grab eye  210  having a grab eye aperture  220  on the lower side of the head bolt  70 . 
         [0049]    A first hoist hook  20  may be connected to a threaded shaft  50  via an attachment means  40 . In one embodiment the attachment means  40  may be a strap  40 . In one embodiment the attachment means may be a nylon or web strap  40 . 
         [0050]    A second hoist hook  30  may be connected to a bolt shaft  60  via an attachment means  40 . In one embodiment the attachment means  40  may be a strap  40 . In one embodiment the attachment means may be a nylon or web strap  40 . 
         [0051]      FIG. 2  illustrates a partial left side of  FIG. 1  showing an embodiment of the threaded shaft  50  having a threaded through hole  90 . The threaded end of head bolt  110  can be seen when looking in the threaded through hole  90  of the threaded shaft  50 .  FIG. 2  also illustrates a member  120  by which at least one of either the first hoist hook  20 , or attachment means or nylon strap  40  may attach to the threaded shaft  50 . The threaded shaft  50  is illustrated as having a square cross section, but the external cross section can be of any shape or configuration. 
         [0052]      FIG. 3  illustrates a partial right view of the embodiment from  FIG. 1 . The square shape of the head end of head bolt  80  is illustrated. This is a common shaped head for bolts used in the lineman field. The member  120  is also illustrated by which at least one of either the second hoist hook  30  or attachment means  40  or nylon strap  40  may connect and be secured to the bolt shaft  60 . The bolt shaft  60  may have a square cross section. In other embodiments the cross section can be of any shape or configuration. 
         [0053]      FIG. 4  illustrates an embodiment of a dead end shoe  200  of the present invention. The dead end shoe  200  may have at a first end a having a grab eye  210  and a grab eye aperture  220 . A leg  230  may extend to an opposed end and terminate at a disc  240 . There may be two opposed legs  230 . The disc  240  may have a disc aperture  250 . The grab eye aperture  220  is used to place a hand line or other hoist through. Some embodiments of the present invention may not have the grab eye aperture. 
         [0054]      FIG. 5  illustrates another embodiment of the first end of the dead end shoe  200  having a grab eye  210  and a grab eye aperture  220 . 
         [0055]      FIG. 7  illustrates an embodiment of the present invention having a travel limiter  130 . The travel limiter  130  limits the travel displacement of the threaded bolt  50 . In one embodiment the travel limiter  130  may be made by the bolt shaft  60  having a channel  140  extending from the outside diameter to the inside diameter of the bolt shaft  60  but terminating at the edges to prevent the threaded shaft  50  cannot fall out of the bolt shaft  60 . The threaded shaft  50  may have an arm  150  extending upwardly there from and extend in the channel  140 . The arm  150  will contact the leftwardly and rightwardly edges of the channel  140  and stop the arm  150  from further displacement, thus preventing the threaded shaft  50  from further displacement. 
         [0056]      FIG. 8  is a side view of the embodiment from  FIG. 7 . 
         [0057]      FIG. 9  is a picture of a lineman using the present invention  10 . 
         [0058]    The present invention  10  may be produced in a variety of sizes. For example, a mid-size version may be available and adapted for a cordless drill and for household use. 
         [0059]    A smaller size version may be available, for example the present invention  10  may between about 2 to about 6 inches 
         [0060]    The present invention  10  may be used for pulling or stretching fence such as barbed wire 
         [0061]    It should be understood, of course, that the foregoing relates to exemplary embodiments of the invention and that modifications may be made without departing from the spirit and scope of the invention as set forth in the following claims.