Patent ID: 11915869
Assignee: HANCHETT ENTRY SYSTEMS, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A latch system including a latch or a keeper, and a solenoid assembly, wherein said solenoid assembly is used to drive said latch or said keeper of said latch system to a retracted position, said solenoid assembly comprising:
a) a solenoid driver coupled to a power supply;
b) a switching circuit connected with said solenoid driver;
c) a printed circuity board including a memory; and
d) a function generator configured to selectively sweep a frequency of a pick current output from said power supply and provided to said solenoid driver across a first range of frequencies,
wherein said frequency is swept across said first range of frequencies by said function generator until said pick current output induces a resulting vibration of said latch system at a target frequency within said first range of frequencies,
wherein upon inducing said resulting vibration of said latch system, said latch or said keeper is released from a preloaded condition,
wherein a second range of frequencies is stored in said memory, wherein said second range of frequencies is determined after said first range of frequencies is swept and falls within said first range of frequencies, and wherein said second range of frequencies includes said target frequency, and
wherein said second range of frequencies is swept by said function generator to induce said resulting vibration of said latch system and release said latch or said keeper from said preloaded condition.