1
Otani Masanaga, Tsutsumi Kazuhiro: Device for cleaning interior of pipe. Kanematsu Eng, January 14, 1997: JP1997-010716

PURPOSE: To clean positively the interior of a pipe, leaving no area uncleaned by injecting a cleaning water to the inner wall of the pipe while a rotating rotor is rotated, and is self-propelled to the inner most area of the pipe, rotating along the inner wall, by the arithmetical effect of a spewi ...


2
Otani Masanaga: Automatic cleaning device. Kanematsu Eng, June 18, 1996: JP1996-154880

PURPOSE: To bring traveling wheels into contact with a surface to be cleaned, and maintain a well-balanced condition by arranging an air blowout part to inject air by blowout force set in a degree of energizing a main body part to the surface to be cleaned in an automatic cleaning device to clean a ...


3
Otani Masanaga: Cleaning device for place below planting. Kanematsu Eng, January 13, 1995: JP1995-011611

PURPOSE: To save man-power of cleaning and to increase efficiency by holding a planting matter between a vacuum type road sanitation truck and a compressed air jet machine to move it horizontally, and collect refuse such as empty can, etc., thrown in a planting matter after blowing off them. CONSTIT ...


4
Otani Masanaga, Hojo Eiji: Method and device for transferring sludge in ground excavation construction. Kanematsu Eng, January 13, 1995: JP1995-011870

PURPOSE: To enable positive transfer without storing sludge in a pipe by sucking depositing sludge by operating a vacuum pump, changing over a valve and force-feeding sludge into a tank by compressed air. CONSTITUTION: A valve 37 mounted to a pressurized-air supply pipe 11 is closed, the valve 36 of ...


5
Otani Masanaga, Hojo Eiji: Attachment for collection of water bottom sludge. Kanematsu Eng, February 22, 1994: JP1994-049859

PURPOSE: To enhance the efficiency of sludge collection by rotating a rotary drum fitted at the periphery with a plurality of vanes within a semicylindrical casing, taking-in the sludge carried to over the drum together with the air, and exhausting them. CONSTITUTION: A compressed air generating dev ...


6
Otani Masanaga, Hojo Eiji: Method and device for transferring sludge in ground excavation. Kanematsu Eng, July 12, 1994: JP1994-193383

PURPOSE: To transfer sludge positively by a method wherein a first valve is closed, a second valve is opened, a vacuum generator is operated, deposited sludge is sucked, both valves are operated reversely after the time required and compressed air is worked. CONSTITUTION: A first valve 16 installed ...


7
Otani Masanaga, Hojo Eiji, Matsuoka Junichi: Reaction-damping high pressure water jet gun, device and method of reaction-damping high pressure water ejection. Kanematsu Eng, April 2, 1996: JP1996-084943

PURPOSE: To perform a cleaning operation in such a state that a reaction is mitigated or eliminated, and carry out the cleaning work using a high pressure water under the reduced load of an operator for a long time, with a large amount of water at high pressure, and almost free from hazards. CONSTIT ...