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| Number | Title | Issue Date |
| 7273413 | Vehicle exhaust system hose and coupling assembly An improved de-coupling device for vehicle exhaust systems specifically emergency vehicle exhaust systems. In this application, flexible hoses are normally utilized as a conduit for exhaust fumes. This invention incorporates a tether inside the flexible hose thereby... | 09/25/2007 |
| 6305422 | Undersink frozen pipe thawing system A micro heater assembly (10) is provided with a micro heater (12) on the distal end (14) of an elongated support wire (16). Micro heater (12) is insertable into a normally water-carrying aperture (141) of an accessible pipe portion (68) under a valved out... | 10/23/2001 |
| 6230745 | Pipe heating device A pipe heating device for conveniently thawing out pipelines. The pipe heating device includes a scissor-like member including a first elongate member having a first end, a second end, and an intermediate portion, and also including a second elongate memb... | 05/15/2001 |
| 6082409 | Thawing tube guide for a culvert A thawing tube guide is prepositioned at the opening of a culvert to facilitate maintenance personnel in passing a culvert thawing tube with a power head into a culvert opening which is covered by ice, snow or an ice slurry. The culvert thawing tube guide... | 07/04/2000 |
| 6041821 | Frozen pipe thawing system A micro heater assembly (10) is provided with a micro heater (12) on the distal end (14) of an elongated support wire (16). Micro heater (12) is insertable into a frozen pipe (60) to reach the frozen area (100) of the pipe (60) whereat to thaw pipe (60) f... | 03/28/2000 |
| 5857480 | Water purging system A water purging system is disclosed. The system includes a primary water line having a first end with threads for the receipt of a faucet constituting a source of water and a second end with threads for coupling to a supplemental water line adapted to be ... | 01/12/1999 |
| 5722461 | Exhaust heat application hose A hose for capturing and redirecting exhaust gasses of a motor vehicle for heating purposes. The hose is pliant and heat resistant. Apparatus for removably connecting to exhaust pipes of different diameters is provided at one end of the hose. This apparat... | 03/03/1998 |
| 5715869 | Apparatus primarily for thawing frozen pipes Apparatus is provided for thawing frozen pipes or for cleaning pipes, for use with a source of warm thawing water or cleaning water, a source of compressed air, and a flexible tube suitable for being inserted into the end of a pipe through guide means to ... | 02/10/1998 |
| 5293904 | Train line de-icer A pneumatic liquid injector de-icing system designed for use on air brake lines of a train includes an alcohol storage tank provided with fittings for engagement between the train air supply lines and the train brake lines. The storage tank may be provide... | 03/15/1994 |
| 5193587 | Pipe thawing apparatus A pipe thawing apparatus has a heat exchanger for heating water. An electric water pump has an outlet coupled to an inlet of the heat exchanger. A flexible feed tube is coupled to an outlet of the heat exchanger. The electric water pump has an electric mo... | 03/16/1993 |
| 5073108 | Apparatus for heating pipe An apparatus for heating a length of pipe and/or sleeve mounted thereon includes a main frame defined by a pair of posts for mounting on the pipe on each side of the area to be heated and a guide bar extending between the top ends of the posts parallel to... | 12/17/1991 |
| 4986311 | Apparatus for clearing frozen water lines Apparatus for clearing frozen water lines or conduits includes a wheel mounted cart or main frame supporting a holding tank or reservoir open to the atmosphere along with means for heating the holding tank. A vertical standpipe has a top end portion open ... | 01/22/1991 |
| 4770211 | Method for thawing out road culverts choked with ice Method for clearing a road culvert or the like which is choked with ice, wherein a substantially homogeneous rope of a material having at least a certain reversible extensibility is extended through the culvert from its inlet side to its outlet side and w... | 09/13/1988 |
| 4449553 | Electrically heated pipe thawing apparatus Apparatus for thawing a pipe having a frozen blockage therein, the apparatus including a self-contained unit on wheels, the unit including a tank for holding water, an electric immersion heater in the tank for heating the water to a temperature of 100°-1... | 05/22/1984 |
| 4286613 | Apparatus for and method of freeze protecting plumbing A gate valve, mounted in a drain pipe connected to a downstream exposed end of a part of a plumbing system subject to occasional freezing, is controlled to open and close by opposed pressures of a spring and a temperature controlled pressure of a refriger... | 09/01/1981 |
| 4250925 | Pipe unfreezer Apparatus for unthawing frozen water pipe including a feed tube which is advanced into the frozen pipe having a probing end formed by pliant fingers forming a tip for the feed tube. The feed tube is directed into the pipe by a tube channeling length of ho... | 02/17/1981 |
| 4124039 | Pipe thawing machine Machine for thawing frozen pipes by forcing hot water from a heated reservoir through a flexible tube advanced into the pipe as the ice melts with means to return water and melt to the reservoir through a duct sealed to the end of the pipe.... | 11/07/1978 |
| 4102358 | Pipe thawing device A portable, compartmented receptacle, having an air pressure compartment and a vacuum compartment. Pump means to create pressure in said air compartment and means to heat the air on said air compartment. Pump means to create a vacuum in said vacuum compar... | 07/25/1978 |
| 4058995 | Lock de-icer A telescoping hollow tube provides means for channeling warm human breath onto a frozen lock. The warm breath thaws the lock. When not in use, the tube telescopes to a small size for easy portability.... | 11/22/1977 |
