Seat cushion pad for automobiles
First Claim
1. A seat cushion pad for automobiles, comprising:
- a seat surface portion, at least a part of the seat surface portion comprising a high-resilience foam; and
the seat surface portion having a 3%ISR value of at least about 6, said 3%ISR value being determined from the equation;
space="preserve" listing-type="equation">3%ISR=25%-strain load/3%-strain loadwherein the 25%-strain load is a load at which a thickness of said seat surface portion is 25% compressed when pressed by a pressure plate having a diameter of 60 mm, and the 3%-strain load is another load at which the thickness is 3% compressed when pressed with said pressure plate.
1 Assignment
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Accused Products
Abstract
A seat cushion pad for automobiles, wherein at least a part of the seat surface portion comprises a high-resilience foam. The foam is selected such that a load ratio (3%ISR) between a load at which the thickness is 25% compressed when pressed with a pressure plate having a diameter of 60 mm (25%-strain load) and a load at which the thickness is 3% compressed when pressed with the same pressure plate (3%-strain load) is at least about 6. Alternatively, another ratio (5%ISR) between the load at which the thickness is 25% compressed when pressed with the above dimensioned pressure plate (25%-strain load) and a load at which the thickness is 5% compressed when pressed with the pressure plate (5%-strain load) is selected to be at least about 4. Such design provides comfortable seating and resistance against fatigue even during periods of extended driving, and can be prepared at a low cost with a large degree of design freedom.
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Citations
8 Claims
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1. A seat cushion pad for automobiles, comprising:
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a seat surface portion, at least a part of the seat surface portion comprising a high-resilience foam; and the seat surface portion having a 3%ISR value of at least about 6, said 3%ISR value being determined from the equation;
space="preserve" listing-type="equation">3%ISR=25%-strain load/3%-strain loadwherein the 25%-strain load is a load at which a thickness of said seat surface portion is 25% compressed when pressed by a pressure plate having a diameter of 60 mm, and the 3%-strain load is another load at which the thickness is 3% compressed when pressed with said pressure plate. - View Dependent Claims (2, 3, 4)
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5. A seat cushion pad for automobiles, comprising:
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a seat surface portion, at least a part of the seat surface portion comprising a high-resilience foam; and the seat surface portion having a 5%ISR value of at least about 4, said 5%ISR value being determined from the equation;
space="preserve" listing-type="equation">5%ISR=25%-strain load/5%-strain loadwherein the 25%-strain load is a load at which a thickness of said seat surface portion is 25% compressed when pressed by a pressure plate having a diameter of 60 mm, and the 5%-strain load is another load at which the thickness is 5% compressed when pressed with said pressure plate. - View Dependent Claims (6, 7, 8)
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Specification