US 12,451,279 B2
Magnetic release mechanism
Andre Bezanson, Halifax (CA); and Guillaume Demers, Wolfe Island (CA)
Assigned to Ashored Inc., Debert (CA)
Filed by Ashored Inc., Debert (CA)
Filed on Aug. 11, 2023, as Appl. No. 18/233,071.
Application 18/233,071 is a continuation in part of application No. 18/275,749, previously published as PCT/CA2022/050156, filed on Feb. 3, 2022.
Claims priority of provisional application 63/145,249, filed on Feb. 3, 2021.
Prior Publication US 2023/0386716 A1, Nov. 30, 2023
Int. Cl. E05B 47/02 (2006.01); H01F 7/02 (2006.01); H01F 7/06 (2006.01); H01F 7/122 (2006.01); H01F 7/123 (2006.01)
CPC H01F 7/0263 (2013.01) [H01F 7/0278 (2013.01); H01F 7/066 (2013.01); H01F 7/122 (2013.01); H01F 7/123 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A magnetic release mechanism for use with underwater fishing equipment comprising a buoyant element, the magnetic release mechanism comprising:
a base plate having an upwardly facing surface that includes a buckle recess and a release plate area, the area having a first portion and a second portion spaced apart from the first portion, the area overlying at least a portion of the buckle recess;
a buckle having a first end releasably received in the recess, wherein an aperture extends through a width of the buckle;
a release plate positioned in the area and extending at least partially through the aperture, the release plate having a first portion and a second portion;
a mechanical restraining member positioned proximate the first portion of the area and inhibiting upward displacement of the first portion of the release plate;
a permanent magnet positioned below the area, the permanent magnet generating a first magnetic field;
an electromagnetic coil positioned proximate the permanent magnet and configured to selectively generate a second magnetic field when energized; and
a magnetic sensor positioned below the area and between the permanent magnet and the first portion of the area, the sensor being configured to detect the presence of a third magnetic field;
wherein, in a locked configuration, the electromagnetic coil is de-energized, upward displacement of the second portion of the release plate is inhibited by a first magnetic force resulting from the first magnetic field, and an upward force exerted on the buckle by the buoyant element is insufficient to displace the first end of the buckle from the recess, and
wherein, in an unlocked configuration, the electromagnetic coil is energized, upward displacement of the second portion of the release plate is inhibited by a second magnetic force resulting from the first magnetic field and the second magnetic field, the second magnetic force being less than the first magnetic force, and the upward force exerted on the buckle by the buoyant element is sufficient to displace the first end of the buckle from the recess.