Coating implements with material supply – Material flows through porous tool – Including compartment for soluble solid material
Patent
1977-06-23
1979-04-17
Coven, Edward M.
Coating implements with material supply
Material flows through porous tool
Including compartment for soluble solid material
401132, 1510493, A47K 702
Patent
active
041498151
ABSTRACT:
A chewable tooth cleaning device comprising from 2.45 to 9.0 cm.sup.3 of substantially closed-cell compressible polymeric foam having a substantially skin-free surface adapted to scrub exposed tooth surfaces. In particular, the polymeric foam has about 12 to 50 cells per linear centimeter, a water absorptivity of less than 1.0 mg/cm.sup.3 after being submerged in water for 24 hours, a tensile strength of at least 3.4.times.10.sup.5 Pa, a compressive strength of at least 5.5.times.10.sup.4 Pa at 10% deflection, and at least 8.3.times.10.sup.4 Pa at 25% deflection, a tear strength of at least 1.38.times.10.sup.5 Pa, and is sufficiently resilient to return to at least 90% of its uncompressed height almost immediately after being compressed to 10% of its uncompressed height.
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Coven Edward M.
Huntington R. Danny
The Gillette Company
Wise Richard A.
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