Operator protection for high pressure hose machines
First Claim
1. In a sewer and/or catch basin cleaner of the type including a water injection system comprising a high pressure water hose, reel means supporting said hose and arranged to permit the hose to extend into and be withdrawn from a sewer catch basin or manhole, means for delivering water under pressure and means for protecting an operator from hose or coupling rupture, said protection means including a first shield means at least partially enclosing an exposed section of the water hose, the cleaner including valve means for permitting water to be pumped through said hose and control means for selectively operating said valve means, the improvement comprising:
- means for supporting said shield means in a first position to be used during operation of said valve means;
means for supporting said shield means in a second position; and
means interacting with said shield means and said valve means for preventing pumping of water through said hose when said shield means is in said second position and to permit pumping of water through said hose when said shield means is in its first position.
4 Assignments
0 Petitions
Accused Products
Abstract
A device for use in connection with the operation of high pressure equipment, such as a sewer and/or catch basin cleaner which has a hose reel for the water hose, and includes a protective shield which can be located in at least two positions. A first position is an operator protection position used when the machine is pumping fluid. A second position is a position in which access may be had to a hose reel or other machine components. An interlock coupled to the shield prevents high pressure fluid from being passed through the hose when the enclosure is in its second position. The shield of the present invention can be used in conjunction with a second, flexible tubular sleeve to provide head-to-toe protection for the operator of such equipment.
8 Citations
11 Claims
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1. In a sewer and/or catch basin cleaner of the type including a water injection system comprising a high pressure water hose, reel means supporting said hose and arranged to permit the hose to extend into and be withdrawn from a sewer catch basin or manhole, means for delivering water under pressure and means for protecting an operator from hose or coupling rupture, said protection means including a first shield means at least partially enclosing an exposed section of the water hose, the cleaner including valve means for permitting water to be pumped through said hose and control means for selectively operating said valve means, the improvement comprising:
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means for supporting said shield means in a first position to be used during operation of said valve means; means for supporting said shield means in a second position; and means interacting with said shield means and said valve means for preventing pumping of water through said hose when said shield means is in said second position and to permit pumping of water through said hose when said shield means is in its first position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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- 10. An operator protection system for use with equipment which includes a hose through which water is pumped under high pressure, said hose being contained on a reel, at least a portion of said reel being open toward an operator of such equipment during use, said system comprising transparent shield means for enclosing at least a portion of said hose, said shield means being movable between an operating position and a a storage position and an upper reel access position, a valve for controlling the pumping of water through said hose and means for operating said valve, and means for preventing operation of said valve when said shield is in its access position and permitting opening said valve when said shield is in its operating position.
Specification