The present invention relates to the prying tools and more particularly to an adjustable prying bar which has an upper and lower portions rotatably engaged with each other so as to pry the working object to a highest extent.
As we know, a prying bar can be use to automobile maintenance and/or to pry variety of objects. Conventional prying bar has a prying head perpendicularly and solidly connected to a handle to form an angle about 90 degrees, and couldn't make angular adjustment. So that it could only pry an object to a predetermined height and couldn't make the object a little higher. Sometimes it even couldn't pry up the object. So it causes great inconvenience to the user.
The present invention has a main object to provide an adjustable prying bar which has upper and lower checking devices capable of rotating the handle to a more large angle in order to pry the working object up to a required height.
Accordingly the adjustable prying bar comprises a prying head perpendicularly connected to the handle. The prying head has an arcuate body having a flat tipped front end and a lug at a rear end, whereas the handle has at front end a hexagon through hole enabling to insert into the lug of the prying head. The lug has a circular depression in a upper portion including an internal stopping ring on the opposite side of the depression. A checking mechanism has a hexagon plate embedded into the hexagon through hole of the handle having a stop ring engaging with the internal stop ring of the prying head, an upper cover covers the circular depression of the lug and then engages with the hexagon plate, a lower cover screws with the lower portion of the lug, a spring engages between the hexagon plate and the lower cover to provide resilient force therein.
Thereby, the handle can be able to turn up to make the hexagon plate idle running a distance for adjusting a larger angle between the handle and the prying head. Then press the handle downward to rotate the hexagon plate so that the hexagon plate be engaged with the stop ring inside the lug. Therefore the prying head begins to work to pry up a working object to a largest height.
The present invention will become more fully understood by reference to the following detailed description thereof when read in conjunction with the attached drawings.
With reference to the drawings and initiated from
The prying head has an arcuate body, a flat tipped lower end 11 and a lug 12 at upper end, wherein the lug 12 has a circular depression 14 with a central bore in the top of upper portion, a internal stop ring 13 on opposite side of the depression 14, the internal stop ring 13 has a plurality of radially inverse teeth 131 therearound, a large aligned through hole in the lower portion of the lug 12 having inner threads around inner periphery.
The handle 20 has a hexagon hole 21 in the flat front end engaged within the lug 12 of the prying head 10 therebetween.
The checking mechanism 30 comprises an upper cover 31 engaged within the circular depression 14 of the lug 12 including a central bore 311, a screw 35 inserted through the central bore 311 of the upper cover 31 and engaged with a threaded central bore 323 of a hexagon plate 32 which is engaged within the hexagon hole 21 of the handle 20 and having a stop ring 321 on upper surface formed with a plurality of positive radial teeth 322 engageable with the stop ring 13 of the lug 12, a circular ring 324 on the bottom for engaging with a spring 34 thereon, a lower cover 33 covering the outside of the lower portion of the lug 12 having external threads on a circular ring 331 engaged with the inner threads 15 of the lug 12 and a cylindrical projection on upper center for engaging with the lower end of the spring 34 which is functioned to provide resilience to the hexagon plate 32 when it is in idle running.
Referring to
Note that the specification relating to the above embodiment should be construed as an exemplary rather than as a limitative of the present invention, with many variations and modifications being readily attainable by a person of average skill in the art without departing from the spirit or scope thereof as defined by the appended claims and their legal equivalents.
Number | Date | Country | Kind |
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95200711 U | Jan 2006 | TW | national |
Number | Name | Date | Kind |
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458337 | Dodge | Aug 1891 | A |
1375751 | Grannis | Apr 1921 | A |
2189480 | Tessier | Feb 1940 | A |
2376978 | Pate | May 1945 | A |
2379387 | Tessier | Jun 1945 | A |
2921773 | Bruce | Jan 1960 | A |
4939961 | Lee | Jul 1990 | A |
5595095 | Hillinger | Jan 1997 | A |
5871204 | Spirer | Feb 1999 | A |
5875692 | Lin | Mar 1999 | A |
6158308 | Huang | Dec 2000 | A |
6253645 | Lin | Jul 2001 | B1 |
6339977 | Lee et al. | Jan 2002 | B1 |