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Generating electric power in response to activity of a biological system

  • US 6,822,343 B2
  • Filed: 01/22/2003
  • Issued: 11/23/2004
  • Est. Priority Date: 02/28/2002
  • Status: Active Grant
First Claim
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1. A device for generating electricity in response to cyclical activity of a biological system of a user, comprising:

  • an inner portion having a first proximity to a surface of the user'"'"'s body and comprising a first collapsible wall defining a inner fluid passage extending in a first direction substantially parallel to the surface of the user'"'"'s body, the inner portion operable to;

    expel at least some of a fluid contained in the inner fluid passage from the inner fluid-passage in response to an external force applied to the first wall in a direction substantially perpendicular to the first direction of the inner fluid passage, the applied external force resulting from expansion of the surface of the user'"'"'s body in connection with the activity of a biological system of the user; and

    receive the expelled fluid back into the inner fluid passage in response to the applied external force decreasing as a result of contraction of the surface of the user'"'"'s body in connection with the activity of the biological system;

    an outer portion having a second proximity to the surface of the user'"'"'s body and comprising a second collapsible wall defining an outer fluid passage extending in a second direction substantially parallel to the surface of the user'"'"'s body, the second proximity being a greater distance from the surface of the user'"'"'s body than the first proximity, the outer portion operable to;

    receive the fluid expelled from the inner fluid passage of the inner portion in response to the applied external force; and

    return the expelled fluid to the inner fluid passage in response to the applied external force decreasing; and

    a generator coupled between the inner portion and the outer portion, the generator operable to generate electricity according to repeated flow of the fluid from the inner fluid passage of the inner portion to the outer fluid passage of the outer portion through the generator in response to cyclical activity of the biological system, the generator being operable in combination with the inner portion and outer portion to generate electricity sufficient to power one or more electronic devices coupled to the generator.

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