Quartz crystal oscillator

A hermetically sealed quartz crystal tuning fork vibrator assembly particularly for use as a time standard in an oscillator circuit comprising in combination a flexural mode tuning fork quartz crystal vibrator having two substantially opposed planar surfaces and being adapted to vibrate in a first vibratory direction substantially parallel to said surfaces, and a mounting plate having a first portion including a flat surface, said flat surface being secured to one of said opposed surfaces at a non-vibtatory portion of said tuning fork vibrator, said mounting plate including a second portion mounted to a reference member, said mounting plate having a resilient portion intermediate said first and second portions, said resilient portion being adapted to vibrate in said first vibratory direction at an angle of about 90.degree. with respect to said first vibratory direction, said resilient portion being formed of two substantially U-shaped spring-like elements, a first leg of each said element being connected to said second portion and the other leg of each U-shaped spring-like elements being connected to said first portion, each leg of each element being formed with a Z-shaped bend away from said opposed surface to which said flat surface is secured so that said other leg of each U-shaped spring-like element connected to said flat surface is in overlapping relationship along the lengthwise extent of said vibrator with said opposed planar surface when said opposed planar surfaces are viewed in plan view to thereby reduce the lateral dimension of said tuning fork vibratory assembly.