Supports – Pipe or cable – Suspended
Patent
1994-12-29
1998-07-14
Ramirez, Ramon O.
Supports
Pipe or cable
Suspended
248 49, 248 681, E21F 1702
Patent
active
057791988
DESCRIPTION:
BRIEF SUMMARY
This invention relates to support brackets and is particularly applicable to support brackets used in mines.
In modern day mining operations, mining machinery, in many instances, is operated by electric power driven equipment which is supplied with power from overhead cables and ancillary services, e.g. water and air is supplied to the working face from suitably constructed hoses and the like.
In order to allow for the unfetted movement of machinery in mines and for reasons of safety, it is customary to provide overhead support means to support such cables and hoses. The cables and hoses used in mines are of necessity of a robust nature in order to comply with mine safety standards. In consequence they are heavy, difficult to handle and require strongly constructed support brackets to accommodate their weight when supported in an overhead manner in a mine.
Such support brackets have been constructed of steel and a typical support bracket consists of two "J" members with the arms of the long limbs fixed to the opposite sides of a nut in parallel spaced relationship to each other. The short limbs of the "J" members face outwardly in diametrically opposed relationship to each other and each of the long limbs is connected by spaced plates secured to each of the long limbs adjacent the base of the "J" members to define therebetween a slot adapted to receive a hand tool the purpose of which be explained hereafter.
In use the support bracket is screwed by its nut on to an overhead bolt in a mine. A hand tool is inserted in the mentioned slot and is used to tighten the suspension brackets to its corresponding rock bolt.
The mentioned cables and hoses are supported by the support brackets and while they have provided overhead support for such cables, problems have still arisen with mining machinery becoming entangled with overhead cables and bases. If this happens and is not immediately noticed by the machine operator, the cables or hoses are torn from the support brackets which in many instances lead to stress damage to the cables, hoses or brackets or both.
Accidents of this type are dangerous and can lead to serious losses in production time.
The present invention has for its object the provision of a support bracket which avoids problems associated with known brackets, it is of simple construction, protected against corrosion and easy to install.
The invention in its broadest form comprises a support bracket comprising a post having a first end and a second end, the first end having means whereby the bracket can be secured to a support, the second end having at least one arm to support a cable thereon, said support arm being moveable from a cable support position to a cable release position to release said cable when said cable is subjected to a load in excess of a predetermined level and to return said arm to a cable support position when said load has been removed.
In one form of the invention at least the arm is formed of material which in an unstressed condition will enable the arm to support a predetermined load and which under a stressed condition in excess of a predetermined load will permit the arm to flex to an open position to release a cable supported thereon and return the arm to a cable support position after the predetermined load has been removed.
Preferably the support bracket is manufactured from plastic material e.g. polyurethane and preferably the post has reinforcing means embedded therein in such a manner as to provide an area of flexibility within the post.
In a modification, means are provided to connect one or more support brackets to an already mounted bracket in a vertical array.
In a further modification roller members are rotatably mounted on the support bracket to facilitate a change in direction of the cable or hose and the support arm is movable to release a cable supported thereon by tilting said bracket.
Preferred embodiments of the invention will now be described with reference to the accompanying drawings in which:
FIG. 1 is a perspective view of a support bracket with cables
REFERENCES:
patent: 974881 (1910-11-01), Hauk
patent: 1670902 (1928-05-01), Popps
patent: 2854824 (1958-10-01), Curry et al.
patent: 3486725 (1969-12-01), Hidassy
patent: 3493206 (1970-02-01), Albro
patent: 3612459 (1971-10-01), Walls
patent: 3687406 (1972-08-01), Krahe et al.
patent: 3866871 (1975-02-01), Dupuy, Sr.
patent: 4032096 (1977-06-01), Perrault et al.
patent: 4131257 (1978-12-01), Sterling
patent: 4372510 (1983-02-01), Skypala
patent: 4541602 (1985-09-01), Potzas
patent: 4871134 (1989-10-01), Oikawa
patent: 5199675 (1993-04-01), DeGuchi
patent: 5217191 (1993-06-01), Smith
Denz Kieron
Rutherford William
Fioris Pty Limited
King Anita M.
Ramirez Ramon O.
LandOfFree
Hanger bracket does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hanger bracket, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hanger bracket will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1874781