Brake-transmission shift interlock device for an automatic transmission system

A solenoid device for interrupting operation of an automatic transmission system comprising:

• a plunger having a first portion positioned in a bobbin member of said solenoid device, and a second portion positioned external to a housing member of said solenoid device;
• means for moving said first plunger portion from a first position to a second position;
• means for returning said first plunger portion from said second position to said first position;
• means for preventing movement of an automatic transmission shifter;
• and
• means for preventing binding of said first plunger portion with an inner wall of said bobbin member.

A voltage regulating solenoid device for interrupting operation of an automatic transmission system comprising:

• a solenoid;
• a voltage regulating circuit;
• a housing for said voltage regulating circuit;
• a support member secured to a moving component of said transmission system, said support member having said solenoid and said voltage regulating circuit attached thereto;
• multiple conductors for providing power to said voltage regulating circuit, said conductors having a first end secured to a stationary member of said automatic transmission system and a second end secured to said housing for said voltage regulating circuit;
• means for preventing movement of said seconds ends of said conductors entering said housing;
• means for preventing movement of an automatic transmission shifter when first predetermined conditions are satisfied;
• and
• means for allowing movement of said automatic transmission shifter when second predetermined conditions are satisfied.