Force entry resistant sash lock

A window latch, for use in securing one or more window sashes slidably disposed within a window master frame, said latch comprising:

• a housing, said housing comprising a cavity and an orifice;
• a shaft, said shaft being rotatably mounted within said housing orifice with a portion of said shaft protruding into said housing cavity, and a portion protruding out from said housing;
• a locking cam, said locking cam comprising an orifice, said orifice of said locking cam being received upon said shaft within said housing cavity, said locking cam being rotatable thereon;
• and
• a delay cam, said delay cam being fixed to a portion of said shaft within said housing cavity, to be rotatable therewith, and with a portion of said delay cam being configured to selectively engage and drive said locking cam to rotate between a first position, in which said locking cam is retracted within said housing and said latch is unlocked, and a second position, in which a portion of said locking cam extends out from said housing and said latch is thereby configured to be locked;
• said delay cam configured to selectively engage and drive said locking cam to rotate from said first position to said second position comprising:
• a first portion of said rotation of said delay cam being without driven rotation of said locking cam;
• and
• a second portion of said rotation of said delay cam configured to cause corresponding rotation of said locking cam to drive said locking cam from said retracted position into said extended position;
• and
• a locking spring, said locking spring having a first end and a second end;
• said first end being secured to said housing within said cavity to thereby permit biasing of said second end;
• said second end being biased into contact with said locking cam, said biased locking spring configured to engage a first opening in said locking cam to thereby lock said locking cam relative to said housing upon said locking cam reaching said second position;
• said engagement of said second end of said locking spring with said locking cam being to a depth to further permit engagement of said spring therein with a first chamfered recess in said delay cam to thereby serve as a detent to releasably retain said delay cam and shaft in said second position.