Jack
AssigneeScambia Industrial Developments Aktiengesellschaft
InventorElena Anatolievna Ivanova
Life of this patent
Estimating the term…
Abstract
The vehicle jack comprises a support having a base plate and a cap bordering together an interior space. The latter contains a bevel gear with a first gearwheel rotatable about a first, inclined axis and a second gearwheel rotatable about a second, vertical axis. The base plate and the second gearwheel comprise annular guiding and rolling surfaces guiding together a set of rolling bodies, viz. balls, so that the base plate, the second gearwheel and the rolling bodies form together a rolling bearing. The base plate and the gearwheels are formed of sheet metal members. The shapes of said annular guiding surfaces and of the teeth of the gearwheels are defined substantially by plastic, non-cutting shaping. The jack can be light and can be manufactured and assembled at low costs.
Claims28
A jack, comprising a support;
- first and second gearwheels rotatably supported by the support and having mutually meshing teeth;
- a load carrier for supporting a load;
- and transferring means operationally connecting the second gearwheel with the load carrier for converting a rotational movement of the second gearwheel into a linear displacement of the load carrier,
- wherein the support and the second gearwheel have annular guide surfaces for guiding together rolling bodies with the support, the second gearwheel, and the rolling bodies forming together a rolling bearing,
- wherein the annular guide surface and the teeth of the second gearwheel are formed by a portion of a one-piece sheet metal member, and
- wherein the annular guide surface and teeth-forming portion of one piece sheet metal is formed as at least one of a Z-shaped member and a S-shaped member having an outer section forming a flank of the annular guide surface.
A jack, comprising a support;
- first and second gearwheels rotatably supported by the support and having mutually meshing teeth;
- a load carrier for supporting a load;
- and transferring means operatively connecting the second gearwheel with the load carrier for converting a rotational movement of the second gearwheel into a linear displacement of the load carrier;
- wherein at least one of the first and second gearwheels is formed at least partially of a one-piece sheet metal member, and teeth of the at least one of the first and second gearwheels are formed of a portion of the one-piece sheet metal member and wherein the meshing teeth of the first and second gearwheels have convexly curved flanks, and wherein each tooth formed by the teeth-forming portion of the at least one of the first and away from another of the first and second gearwheels.
A jack, comprising a support;
- first and second gearwheels rotatably supported by the support and having mutually meshing teeth;
- a load carrier for supporting a load;
- and transferring means operatively connecting the second gearwheel with the load carrier for converting a rotational movement of the second gearwheel into a linear displacement of the load carrier,
- wherein at least one of the first and second gearwheels is formed at least partially of a one-piece sheet metal member, and teeth of the at least one of the first and second gearwheels are formed of a portion of the one-piece sheet metal member, wherein the at least one of the first and second gearwheels and is formed entirely of one-piece sheet metal member having a central portion provided with a central hole, wherein the central portion has a portion which extends outwardly of the central hole and has at least one of approximately Z-shaped radial cross-section and S-shaped radial cross-section, whereby a collar, which has a surface bordering the central hole, is formed.
A jack, comprising a support;
- first and second gearwheels rotatably supported by the support and having mutually meshing teeth;
- a load carrier for supporting a load;
- and transferring means operationally connecting the second gearwheel with the load carrier for converting a rotational movement of the second gearwheel into a linear displacement of the load carrier,
- wherein the support and the second gearwheel have annular guide surfaces for guiding together rolling bodies with the support, the second gearwheel, and the rolling bodies forming together a rolling bearing,
- wherein the annular guide surface and the teeth of the second gearwheel are formed by a portion of a one-piece sheet metal member,
- wherein the teeth-forming portion of the one-piece sheet metal member and the annular guide surface of the second gearwheel have a common central portion provided with a central hole, and wherein the central portion has a portion which extends outwardly of the central hole and has at least one of approximately Z-shaped radial cross-section and S-shaped radial cross-section, whereby a collar, which has a surface bordering the central hole, is formed.
Dependencies are inferred from the claim text.