(19)
(11) EP 2 617 469 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
07.08.2013 Bulletin 2013/32

(43) Date of publication A2:
24.07.2013 Bulletin 2013/30

(21) Application number: 12003574.6

(22) Date of filing: 08.05.2012
(51) International Patent Classification (IPC): 
A62C 27/00(2006.01)
F04C 15/00(2006.01)
F04C 2/16(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 19.01.2012 KR 20120006244

(71) Applicant: JM motors Co., Ltd.
Samdong-myeon Ulju-gun Ulsan gwangyoksi 689-932 (KR)

(72) Inventor:
  • Kno, Sung-Wang
    Ulju-gun, Ulsan 689-932 (KR)

(74) Representative: Roos, Peter et al
Roospatent Bavariaring 20
80336 München
80336 München (DE)

   


(54) Simple fire truck with easy movement


(57) Provided is a simple fire truck that easily moves to a narrow fire occurred spot difficult for a car to enter by using a transfer wheel driven by a motor separately from a pump driven by an engine, the simple fire truck including: a depressurization groove that is formed between a chamber where a sealing unit receiving pressure of the pump is provided, and a suction hole, so as to depressurize a pressure of the chamber; a lubricating water supply unit for improving durability through lubrication and cooling by supplying lubricating water to an inlet of the chamber according to a vacuum pressure generated during an initial activation of the pump; and a rotor unit having a first protrusion at an end of a side of a rotor provided inside the chamber, and a second protrusion at a periphery of a shaft hole through which a rotation shaft penetrates. Accordingly, the simple fire truck easily moves to the narrow fire occurred spot difficult for a car to enter by using the transfer wheel driven by the motor separately from the pump driven by the engine, prevents a damage of the sealing unit by depressurizing a pressure transferred to the sealing unit by forming a groove between the chamber and a suction unit formed inside the pump, and improves durability of a positive-displacement pump through lubrication and cooling by using a lubricating water suction unit provided at a pump suction unit during an initial activation.







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