The archive

What’s new

Everything the archive has gained lately, newest first. Also as a feed for whatever you read feeds with.

13,573 items

August 2026

patent · 10 Sep 1996 · added 2 months ago

Rotary electric machine
patent · 2 Jan 1996 · added 2 months ago

Self starting brushless d.c. motor
patent · 14 Jun 1994 · added 2 months ago

Method of making an electromagnetic transducer
patent · 2 Dec 1982 · added 2 months ago

COMPOUND INTERACTION / INDUCTION ELECTRIC ROTATING MACHINE
patent · 12 Sep 1978 · added 2 months ago

Dynamoelectric machine with inner and outer stators

Machine transcription of the US4114057A patent scan, 7 pages.
patent · 24 May 1977 · added 2 months ago

Electromagnetic motor

Machine transcription of the US4025807A patent scan, 8 pages.
patent · 1 Jul 1975 · added 2 months ago

Commutating method and apparatus for DC permanent magnet machines

Machine transcription of the US3892987A patent scan, 9 pages.
patent · 16 Jun 1977 · added 2 months ago

Rectangular wave generator
patent · 7 Sep 1971 · added 2 months ago

Magnetic motor with plurality of stators

Machine transcription of the US3603823A patent scan, 8 pages.
patent · 13 Mar 2003 · added 2 months ago

Improved electric motor
patent · 4 Jan 2022 · added 2 months ago

Control system for an electric motor/generator
patent · 9 Apr 2019 · added 2 months ago

Multi-tunnel electric motor/generator
patent · 21 Nov 2017 · added 2 months ago

DC electric motor/generator with enhanced permanent magnet flux densities
patent · 8 Oct 2019 · added 2 months ago

Multi-tunnel electric motor/generator
patent · 22 Feb 2022 · added 2 months ago

Multi-tunnel electric motor/generator
patent · 4 Jan 2022 · added 2 months ago

DC electric motor/generator with enhanced permanent magnet flux densities
patent · 16 Jun 2022 · added 2 months ago

Dc electric motor/generator with enhanced permanent magnet flux densities
patent · 12 Jul 2022 · added 2 months ago

Brushed electric motor/generator
patent · 28 Jun 2022 · added 2 months ago

Multi-tunnel electric motor/generator
patent · 13 Jun 1961 · added 2 months ago

Pumping apparatus

Machine transcription of the US2988000 patent scan, 5 pages.
patent · 16 Apr 2019 · added 2 months ago

Brushless electric motor/generator
patent · 28 Nov 2012 · added 2 months ago

System and method of filling an air gap between a pair of core sections of a transformer
patent · 16 Aug 2016 · added 2 months ago

DC electric motor/generator with enhanced permanent magnet flux densities
patent · 8 Aug 2017 · added 2 months ago

Multi-tunnel electric motor/generator
patent · 7 May 2019 · added 2 months ago

Brushed electric motor/generator
patent · 15 Oct 2019 · added 2 months ago

Multi-tunnel electric motor/generator
patent · 12 Nov 2019 · added 2 months ago

Multi-tunnel electric motor/generator segment
patent · 26 Oct 2021 · added 2 months ago

Circumferential flux electric machine with field weakening mechanisms and methods of use
patent · 15 Mar 2022 · added 2 months ago

System and method for an electric motor/generator with a multi-layer stator/rotor assembly
patent · 19 Apr 2022 · added 2 months ago

Multi-tunnel electric motor/generator