Portable airbag scale
First Claim
1. A portable airbag scale, comprising:
- an inflatable bladder having opposed upper and lower walls and at least one sidewall, the lower wall being adapted for positioning on a support surface and the upper wall being adapted for receiving a load to be weighed, the bladder having a port formed through the at least one sidewall for selective inflation and deflation of the inflatable bladder;
a pressure sensor mounted within the inflatable bladder for measuring air pressure therein;
means for calculating the weight of the load based upon a difference in air pressure in the inflatable bladder measure when the load is not supported on the upper wall and measured when the load is supported on the upper wall;
a humidity sensor connected to said means for calculating the weight of the load; and
means for displaying the calculated weight of the load.
1 Assignment
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Accused Products
Abstract
The portable airbag scale is a scale that measures the weight of a load based upon a difference between measured air pressure in an inflatable bladder, the difference being measured between a first state, where the load is not positioned on the inflatable bladder, and a second state, in which the load is supported on the inflatable bladder. The portable airbag scale includes an inflatable bladder having opposed upper and lower walls and at least one sidewall. A port is formed through the at least one sidewall for selective inflation and deflation of the inflatable bladder. A pressure sensor is mounted within the inflatable bladder for measuring the air pressure therein. A controller selectively calculates the weight of the load based upon the measured difference in air pressure. A display is provided for displaying the weight of the load.
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Citations
18 Claims
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1. A portable airbag scale, comprising:
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an inflatable bladder having opposed upper and lower walls and at least one sidewall, the lower wall being adapted for positioning on a support surface and the upper wall being adapted for receiving a load to be weighed, the bladder having a port formed through the at least one sidewall for selective inflation and deflation of the inflatable bladder; a pressure sensor mounted within the inflatable bladder for measuring air pressure therein; means for calculating the weight of the load based upon a difference in air pressure in the inflatable bladder measure when the load is not supported on the upper wall and measured when the load is supported on the upper wall; a humidity sensor connected to said means for calculating the weight of the load; and means for displaying the calculated weight of the load. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A portable airbag scale, comprising:
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an inflatable bladder having opposed upper and lower walls and at least one sidewall, the lower wall being adapted for positioning on a support surface and the upper wall being adapted for receiving a load to be weighed, the bladder having a port formed through the at least one sidewall for selective inflation and deflation of the inflatable bladder; a pressure sensor mounted within the inflatable bladder for measuring air pressure therein; a temperature sensor for measuring ambient temperature; means for calculating the weight of the load based upon a difference in air pressure in the inflatable bladder measured when the load is not supported on the upper wall and when the load is supported on the upper wall, the temperature sensor being connected to the means for calculating; a humidity sensor connected to said means for calculating the weight of the load; and means for displaying the weight of the load and the ambient temperature. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A portable airbag scale, comprising:
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an inflatable bladder having opposed upper and lower walls and at least one sidewall, the lower wall being adapted for positioning on a support surface and the upper wall being adapted for receiving a load to be weighed, the bladder having a port formed through the at least one sidewall for selective inflation and deflation of the inflatable bladder; a pressure sensor mounted within the inflatable bladder for measuring air pressure therein; a humidity sensor for measuring ambient humidity; means for calculating the weight of the load based upon a difference in air pressure in the inflatable bladder measured when the load is not supported on the upper wall, and measured when the load is supported on the upper wall, the humidity sensor being connected to the means for calculating; and means for displaying the calculated weight of the load and for displaying the ambient humidity measured by the humidity sensor. - View Dependent Claims (16, 17, 18)
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Specification