Needle-type tire pressure gauge
First Claim
1. A needle-type tyre pressure gauge comprising:
- a drum body having a closed end and an open end defining therebetween a receiving room;
a tire pressure taking means communicating with said receiving room and having a head having an annular indentation and an air intake communicating with the indentation;
a tire pressure actuated means pivotally mounted in said receiving room, having a toothed surface, and connected to said tire pressure taking means;
a resilient means connected between said receiving room and said tire pressure actuated means for the restoration of said tire pressure actuated means;
a gear rotatably mounted in said receiving room and meshing with said toothed surface;
a cover having a scale thereon and engaging said open end; and
a needle pivotally mounted on said cover and connected to said gear so that, when said tire pressure actuated means is actuated by an air coming from said tire pressure taking means to pivot in said receiving room, said gear will carry therewith said needle to pivot above said scale;
further comprising a gear stopping means mounted in said receiving room for temporarily stopping the rotation of said gear for a convenient reading of the position of said needle when pivoted;
wherein said tire pressure taking means includes a tubular member integrally formed to said drum body;
wherein said tire pressure actuated means includes;
a piston piece having a first end received in said tubular member and a second end pivotally mounted in said receiving room; and
an intermediate piece having a third end pivotally mounted in said receiving room to be coaxial with said second end and a fourth end provided with said toothed surface; and
said resilient means includes;
a first resilient member connected between said receiving room and said piston piece for the restoration of said piston piece; and
a second resilient member wound around said third end and connected between said receiving room and said intermediate piece for the restoration of said intermediate piece.
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Accused Products
Abstract
A needle-type tire pressure gauge includes a drum body having a closed end and an open end defining therebetween a receiving room, a tire pressure taking means communicating with the receiving room and having a head having an annular indentation and an air intake communicating with the indentation, a tire pressure actuated means pivotally mounted in the receiving room, having a toothed surface and connected to the tire pressure taking means, a resilient means connected between the receiving room and the tire pressure actuated means for the restoration of the tire pressure actuated means, a gear rotatably mounted in the receiving room and meshing with the toothed surface, and a gear stopping means for temporarily stopping the rotation of the gear for a convenient reading of the position of a needle which is connected to the gear and pivotally mounted on a cover which has a scale thereon and engages the open end so that when the tire pressure a actuated means is actuated by an air coming from the tire pressure taking means to pivot in the receiving room, the gear will carry therewith the needle to pivot above the scale.
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Citations
4 Claims
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1. A needle-type tyre pressure gauge comprising:
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a drum body having a closed end and an open end defining therebetween a receiving room; a tire pressure taking means communicating with said receiving room and having a head having an annular indentation and an air intake communicating with the indentation;
a tire pressure actuated means pivotally mounted in said receiving room, having a toothed surface, and connected to said tire pressure taking means;
a resilient means connected between said receiving room and said tire pressure actuated means for the restoration of said tire pressure actuated means;a gear rotatably mounted in said receiving room and meshing with said toothed surface; a cover having a scale thereon and engaging said open end; and
a needle pivotally mounted on said cover and connected to said gear so that, when said tire pressure actuated means is actuated by an air coming from said tire pressure taking means to pivot in said receiving room, said gear will carry therewith said needle to pivot above said scale;further comprising a gear stopping means mounted in said receiving room for temporarily stopping the rotation of said gear for a convenient reading of the position of said needle when pivoted; wherein said tire pressure taking means includes a tubular member integrally formed to said drum body; wherein said tire pressure actuated means includes; a piston piece having a first end received in said tubular member and a second end pivotally mounted in said receiving room; and an intermediate piece having a third end pivotally mounted in said receiving room to be coaxial with said second end and a fourth end provided with said toothed surface; and said resilient means includes; a first resilient member connected between said receiving room and said piston piece for the restoration of said piston piece; and a second resilient member wound around said third end and connected between said receiving room and said intermediate piece for the restoration of said intermediate piece. - View Dependent Claims (2, 3, 4)
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Specification