Electrochemical reed filter

An electromechanical reed filter comprising:

• a base member;
• a protective casing mounted on said base member and defining therewith a housing;
• a plurality of resonant metal reeds disposed within said housing, one end of said reeds being connected together and connected to said base member thereby mounting said reeds with their other end free to undergo mechanical resonance;
• a plurality of electromechanical transducers each adhered by adhesive to respective ones of said metal reeds;
• and means comprising resilient shock-absorbing members secured to said other end of said metal reeds and coacting therewith for preventing cracking of said adhesive when abnormally large external shocks are imparted to the reed filter by preventing direct collision of said metal reeds with said casing.

An electromechanical reed filter comprising;

• a base member;
• a protective casing mounted on said base member and defining therewith a housing;
• a plurality of resonant metal reeds disposed within said housing, one end of said reeds being connected together and connected to said base member thereby mounting said reeds with their other end free to undergo mechanical resonance;
• a plurality of electromechanical transducers each adhered by adhesive to respective ones of said metal reeds;
• and means coacting with said other end of said reeds for preventing cracking of said adhesive when abnormally large external shocks are imparted to the reed filter by preventing direct collision of said metal reeds with said casing, said means for preventing cracking of said adhesive including means for suppressing spurious vibrations of said metal reeds.

An electromechanical reed filter comprising:

• a base member;
• a protective casing mounted on said base member and defining therewith a housing;
• a plurality of resonant metal reeds disposed within said housing, one end of said reeds being connected together and connected to said base member thereby mounting said reeds with their other end free to undergo mechanical resonance;
• a plurality of electromechanical transducers each adhered by adhesive to respective ones of said metal reeds;
• and means coacting with said other end of said reeds for preventing cracking of said adhesive when abnormally large external shocks are imparted to the reed filter by preventing direct collision of said metal reeds with said casing, said means for preventing cracking comprising resilient shock-absorbing members secured to said other end of said metal reeds and having sufficient mass so as to prevent spurious vibrations at frequencies higher than the resonant frequency of said metal reeds.