Title:
OIL PRESSURE GAUGE
Document Type and Number:
Japanese Patent JP3881095
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To allow light handle operation of a restore mechanism when canceling pressure indication of a pressure gauge which displays it while maximum pressure point is held.
SOLUTION: Relating to an oil pressure gauge comprising a pressure gauge 1 comprising a display part 2 and a main body 3 to which the pressure gauge 1 is attached, a first check valve 11 for forming a peak hold of the pressure gauge 1 by blocking an oil-flow from the sensor part 4 toward an oil channel 9 through a pressurized flow channel 10 which communicates with the oil channel 9 is provided between the oil channel 9 and the sensor part 4 of the pressure gauge 1, at the main body 3, meanwhile a valve chamber 12 of the first check valve 11 communicating with a return valve 19 which is opened/closed by an operation of a return mechanism 18 through a first pressure-release flow channel 17, and a second pressure-release flow channel 28 which communicates with the oil channel 9 communicating with a valve chamber 19a of the return valve 19 through a second check valve 29 which blocks oil flow from the oil channel 9 toward the return valve 19, so that the pressure of the oil channel 9 is blocked with the second check valve 29 to discourage its effect on the return mechanism 18.
Inventors:
Shunichi Yamada
Application Number:
JP25928397A
Publication Date:
February 14, 2007
Filing Date:
September 08, 1997
Export Citation:
Assignee:
NOF Giken Industry Co., Ltd.
International Classes:
G01D1/12; G01L19/00; G01D11/00; G01L5/00; G01L7/04; (IPC1-7): G01L7/04; G01D1/12; G01D11/00; G01L5/00; G01L19/00
Domestic Patent References:
| JP61097740U | ||||
| JP3014331U |
Attorney, Agent or Firm:
Katsuhiko Hashimoto
Kyoko Hashimoto
Kyoko Hashimoto