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Strengthened, shatter-resistant vehicular mirror

  • US 3,985,429 A
  • Filed: 02/06/1975
  • Issued: 10/12/1976
  • Est. Priority Date: 02/06/1975
  • Status: Expired due to Term
First Claim
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1. A strengthened, reinforced safety mirror comprisinng a sheet of glass having a predetermined coefficient of thermal expansion and front and rear surfaces;

  • reflective coating means substantially covering one of said surfaces for reflecting light;

    reinforcing sheet means laid substantially against and being generally coextensive with the rear surface of said mirror for strengthening and shatterproofing said glass sheet, said reinforcing sheet means having a coefficient of thermal expansion generally matched to that of said glass sheet and means for allowing an elastic bonding means to permeate said sheet means and adhere said sheet means to said mirror; and

    resilient, elastic bonding means permeating said reinforcing sheet means and forming a layer including said reinforcing sheet means therewithin for adhering said reinforcing sheet means to said mirror whereby during exposure to normal temperatures or either extreme heat or cold, said reinforcing sheet means and said resilient, elastic bonding means together increase the tensile strength of said rear surface of said glass sheet and retain any fragments and pieces of said glass should it be broken.

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