Level with captured magnetic strip
A level device may include a magnetic element, a vial assembly and a housing having a top face, a bottom face, a first end and a second end. The housing may include a capture element disposed at the bottom face or the top face. The vial assembly may include one or more spirit or bubble levels disposed in the housing to indicate conditions of level or plumb relative to orientation of the top or bottom faces. The magnetic element may be retained by the capture element. The magnetic element may be retained on six sides by the capture element.
1 . A level device comprising:
a housing having a top face, a bottom face, a first end and a second end, the housing comprising a capture element disposed at the bottom face or the top face;
a vial assembly comprising one or more spirit or bubble levels disposed in the housing to indicate conditions of level or plumb relative to orientation of the top or bottom faces; and
a magnetic element retained by the capture element,
wherein the magnetic element is retained on six sides by the capture element.
2 . The device of claim 1 , wherein the housing comprises a frame and a body, and
wherein the capture element comprises retention arms disposed to extend away from the frame and include retaining lips that prevent movement of the magnetic element away from the frame.
3 . The device of claim 2 , wherein the retention arms are formed at a bottom portion of the frame, the bottom portion extending along a length of the magnetic element,
wherein the retention arms include sidewalls that extend substantially perpendicular to the bottom portion from opposing lateral edges of the bottom portion,
wherein the retention arms further include the retaining lips, which extend toward each other from the retention arms on the opposing lateral edges of the bottom portion to form a channel between the sidewalls, the bottom portion and the retaining lips.
4 . The device of claim 3 , wherein the magnetic element includes a base portion disposed in the channel, and an interface portion disposed between the retaining lips.
5 . The device of claim 4 , wherein the magnetic element is an extruded strip magnet such that the base portion and the interface portion are integrally formed, and
wherein the base portion has a first width and the interface portion has a smaller second width.
6 . The device of claim 5 , wherein the interface portion has a v-shaped groove formed therein, the groove extending along a full length of the interface portion.
7 . The device of claim 4 , wherein the sidewalls define a first width therebetween and the retaining lips define a second width therebetween, and
wherein the second width is between about 50% and about 95% of the first width.
8 . The device of claim 3 , wherein the bottom portion of the frame prevents movement of the magnetic element in a first direction,
wherein the sidewalls prevent movement of the magnetic element in a second direction and a third direction, the second and third directions being opposite each other and perpendicular to the first direction, and
wherein the retention lips prevent movement of the magnetic element in a fourth direction opposite the first direction.
9 . The device of claim 8 , wherein the body comprises retaining walls, the retaining walls defining planar surfaces that extend substantially perpendicular to a longitudinal length of the bottom portion.
10 . The device of claim 9 , wherein the retaining walls are disposed at respective opposing ends of the channel to prevent movement of the magnetic element in a fifth direction and a sixth direction, the fifth and sixth directions being opposite each other and perpendicular to the first, second, third and fourth directions.
11 . The device of claim 9 , wherein the body comprises a first case half disposed on a first side of the frame and a second case half disposed on a second side of the frame, and
wherein the retaining walls are formed by parts of each of the first and second case halves.
12 . The device of claim 11 wherein the frame comprises an I shaped cross section including a top portion that extends parallel to the bottom portion and a center beam extending between longitudinal centers of the top portion and the bottom portion.
13 . The device of claim 12 , wherein the center beam includes one or more orifices through which fittings of the first and second case halves engage each other.
14 . The device of claim 13 , wherein the center beam includes one or more vial orifices to receive the one or more spirit or bubble levels of the vial assembly.
15 . The device of claim 12 , wherein the top portion comprises a viewing orifice through which one of the one or more spirit or bubble levels is visible.
16 . The device of claim 2 , wherein the retention arms and retaining lips extend along opposing lateral sides of an entire length of the magnetic element.
17 . The device of claim 2 , wherein the capture element is configured to fully cover the magnetic element on five sides.
18 . The device of claim 17 , wherein the capture element is configured to leave about 50% to about 95% of a sixth side of the magnetic element exposed.
19 . The device of claim 17 , wherein an adhesive is disposed in the capture element.
20 . The device of claim 19 , wherein the adhesive is provided between the bottom portion and the magnetic element.