Bizarre Patents
Decorative Jeweled Wheel Cover
An improved wheel is provided wherein decorative items such as gem stones are embedded in either the wheel surface, a special mounting section attached to the wheel surface, or to a spoke strap that wraps around each spoke and positions embedded gem stones on the outside surface of the spoke.
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US Patent 4242627 - Battery charger
US Patent Issued on December 30, 1980
Estimated Patent Expiration Date:
December 30, 1997Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
Estimated Patent Expiration Date:
December 30, 1997Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.AbstractA battery charging system for charging a battery from an AC source, including control rectifier means for rectifying the charging current, a pulse generator for triggering the rectifier to control the transmission of current to the battery, phase control means for timing the firing of the pulse generator according to the charge on the battery, and various control means for alternatively controlling the phase control means depending upon the charge on the battery; wherein current limiting means are provided for limiting the charging current according to the charge on the battery to protect the system from excessive current in the event a weak battery is being charged, a feedback circuit is provided for maintaining the charge on a battery to compensate for battery leakage, and circuitry is provided for equalizing the voltage between the respective cells of the battery. | InventorApplicationNo. 05/857101 filed on 12/05/1977US Classes:320/143With voltage compensationExaminersPrimary: Hickey, Robert J.Attorney, Agent or FirmUS Patent References3382425, 3586955, 3766463, 3781631, 3876921, 4031451Charging circuit with SCR's triggered by pedestal and cosine modified ramp unijunction circuit having means for current limiting by controlling pedestal levelIssued on: 06/21/1977 Inventor: Gordon International ClassH02J 7/00 (20060101) |
