Tube and pump using same
AssigneeJunkosha Inc.
InventorsKouichi Yanai, Yukihiko Hayashi
Life of this patent
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Abstract
A tube is for use in a pump that transports a fluid by peristaltic movement and includes: a flow path that serves as a transport path of the fluid and extends in a first direction; and a body portion formed around the flow path, the body portion includes a first layer formed on the flow path and a second layer formed on the first layer, a flexural modulus of elasticity in a radial direction of the second layer is smaller than a flexural modulus of elasticity in a radial direction of the first layer, and the elastic modulus ratio R2 of the second layer is larger than the elastic modulus ratio R1 of the first layer.
Claims14
A tube for use in a pump that transports a fluid by peristaltic movement, the tube comprising:
- a flow path that serves as a transport path of the fluid and extends in a first direction;
- and
- a body portion formed around the flow path, wherein
- the body portion includes a first layer formed on the flow path and a second layer formed on the first layer,
- a flexural modulus of elasticity in a radial direction of the second layer is smaller than a flexural modulus of elasticity in a radial direction of the first layer, and
- when an elastic modulus ratio R1 of the first layer is defined as a ratio of a tensile modulus of elasticity in a circumferential direction of the first layer to the flexural modulus of elasticity in the radial direction of the first layer, and
- an elastic modulus ratio R2 of the second layer is defined as a ratio of a tensile modulus of elasticity in a circumferential direction of the second layer to the flexural modulus of elasticity in the radial direction of the second layer,
- the elastic modulus ratio R2 of the second layer is larger than the elastic modulus ratio R1 of the first layer.
A tube for use in a pump that transports a fluid by peristaltic movement, the tube comprising:
- a flow path that serves as a transport path of the fluid and extends in a first direction;
- and
- a body portion formed around the flow path, wherein
- the body portion includes a first layer formed on the flow path and a second layer formed on the first layer,
- a flexural modulus of elasticity in a radial direction of the second layer is smaller than a flexural modulus of elasticity in a radial direction of the first layer, and
- a tensile modulus of elasticity in a circumferential direction of the second layer is larger than the flexural modulus of elasticity in the radial direction of the second layer and/or a tensile modulus of elasticity in the radial direction of the second layer.
A tube for use in a pump that transports a fluid by peristaltic movement, the tube comprising:
- a flow path that serves as a transport path of the fluid and extends in a first direction;
- and
- a body portion formed around the flow path, wherein
- the body portion includes:
- a first layer that is formed on the flow path and includes a first porous base material having a plurality of micropores and a first resin entering the plurality of micropores of the first porous base material;
- and a second layer that is formed on the first layer and includes a second porous base material having a plurality of micropores and a second resin entering the plurality of micropores of the second porous base material,
- a flexural modulus of elasticity in a radial direction of the second layer is smaller than a flexural modulus of elasticity in a radial direction of the first layer, and
- the second porous base material extends in a circumferential direction of the tube in a cross section perpendicular to the first direction.
Dependencies are inferred from the claim text.