Pressure gauge with divisional scale
AssigneeBeto Engineering & Marketing Co., Ltd.
InventorLopin WANG
Life of this patent
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Abstract
A pressure gauge with divisional scale includes a piston tube, a piston, an elastic member, a rotating member and a pointer connected with the rotating member. The piston has plural transmission portions and is slidably disposed in the piston tube. The elastic member is disposed inside the piston tube and abutted against the piston. The rotating member has plural gears sequentially and respectively engaged with the transmission portions when the piston slides so as to drive the pointer to swivel, thereby achieving a pressure gauge with a single pointer indicating multiple pressure ranges.
Claims13
A pressure gauge with divisional scale, comprising:
- a piston tube;
- a piston comprising at least two transmission portions, said piston being slidably disposed in said piston tube;
- an elastic member disposed inside said piston tube in a way that said elastic member exerts an elastic force against said piston;
- a rotating member comprising at least two gears, said at least two gears being sequentially and respectively engaged with said at least two transmission portions of said piston when said piston slides in said piston tube;
- and
- a pointer driven by said rotating member to swivel.
A pressure gauge with divisional scale, comprising:
- a piston comprising at least two transmission portions arranged at intervals;
- a rotating member comprising at least two gears, said at least two gears being sequentially and respectively engaged with said at least two transmission portions of said piston when said piston slides, such that said rotating member is rotatably driven by said piston;
- and
- a pointer driven by said rotating member to swivel.
A pressure gauge with divisional scale, comprising:
- a piston comprising at least two transmission portions;
- a rotating member comprising at least two gears with different diameters, said rotating member being rotated by said piston in a way that said at least two gears are sequentially and respectively engaged with said at least two transmission portions of said piston;
- and
- a pointer driven by said rotating member to swivel with at least two different angle amplitudes.
Dependencies are inferred from the claim text.