Patent ID: 6928728
Filing Date: 2005-08-16
Classification: F16J,Y10T

Abstract:
1. A method of providing a water vapor seal and mechanical bond between a lens and a base which are assembled to form an instrument housing, the method comprising: heating the lens and the base to at least approximately 180 degrees F.; heating an instrument works to a temperature of at least approximately 140 degrees F.; assembling the instrument works and the base, such that a channel is formed between the instrument works and an upstanding side wall of the base; dispensing a heated body of sealant into the channel to form a ring of sealant running along the side wall of the base; maintaining a level of heating for the assembly of the instrument works and the base, such that the channel is at a temperature of at least approximately 250 degrees F. during dispensing of the sealant; assembling the lens to the base and pressing a lower edge of the lens into the ring of sealant in the channel; and allowing the sealant to cure.