Large powered jack

Patent metadata

Field	Value
Publication number	US-10414223-B2
Application number	US-201514928291-A
Country	US
Kind code	B2
Filing date	Oct 30, 2015
Priority date	Feb 11, 2015
Publication date	Sep 17, 2019
Grant date	Sep 17, 2019

Abstract

Provided is a jack assembly that may include a first tube having a bearing and a second tube being telescopingly engaged with the first tube. The second tube may be attached to a nut therein. A motor assembly may be attached to the first tube. An elongated screw may be in rotatable communication with the motor assembly, the bearing, and the nut wherein operation of the motor assembly rotates the elongated screw such that the nut telescopingly translates along the elongated screw and the second tube translates relative to the first tube. The nut may be a recirculating ball nut assembly having a housing with at least one track and a plurality of ball bearings. The threads and the track may be configured to receive the plurality of ball bearings therein such that as the elongated screw rotates, the housing of the recirculating ball screw translates along the elongated screw.

First claim

Having thus described the invention, the following is claimed:

1. A jack assembly for a towed vehicle, the jack assembly comprising:
an outer tube;
an inner tube telescopingly engaged with the outer tube, the inner tube engaged with a nut therein;
a non-hydraulic motor assembly;
at least one elongated screw in rotatable communication with the non-hydraulic motor assembly and the nut; and
a dust tube that surrounds the elongated screw and is positioned within the outer tube and the inner tube to reduce exposure of debris against the elongated screw;
wherein operation of the non-hydraulic motor assembly rotates the elongated screw causing the nut to translate along the elongated screw and causing the inner tube to translate relative to the outer tube such that the outer and inner tubes support loads in excess of 8,000 pounds at a rate of speed that exceeds about 10 inches per minute.

2. The jack assembly of claim 1 , wherein the non-hydraulic motor assembly includes a rotor configured to rotate about a first axis within a housing.

3. The jack assembly of claim 1 , wherein the elongated screw is configured to rotate about a second axis within the outer and inner tubes.

4. The jack assembly of claim 1 , further comprising an attachment assembly connected to the outer tube that is configured to attach the jack assembly to a vehicle.

5. The jack assembly of claim 1 , further comprising a base attached to the inner tube.

6. The jack assembly of claim 5 , wherein the motor assembly is attached to the outer tube and is located opposite from the base.

7. The jack assembly of claim 1 , wherein the nut comprises a recirculating ball nut assembly having housing with at least one track and a plurality of ball bearings, the elongated screw includes a plurality of threads wherein the track and threads are configured to receive the plurality of ball bearings therein such that as the elongated screw rotates, the plurality of ball bearings move through the threads and track and the housing translates along the elongated screw.

8. The jack assembly of claim 1 , wherein the dust tube creates a labyrinth seal by providing a tortuous path that reduces exposure of debris against the elongated screw.

9. A jack assembly for a towed vehicle, the jack assembly comprising:
an outer tube;
an inner tube operatively engaged with the outer tube; and
a telescoping mechanism operatively coupled with the outer and inner tubes, wherein the telescoping mechanism telescopingly positions the outer tube relative to the inner tube, the telescoping mechanism comprises:
an elongated screw;

a dust tube that surrounds the elongated screw and is positioned within the outer tube and the inner tube to reduce exposure of debris against the elongated screw; and
a recirculating ball nut assembly configured to translate along the elongated screw such that the outer and inner tubes are configured to be electronically controlled to telescope relative to one another between a retracted position and an extended portion,
wherein the outer and inner tubes support a load in excess of 8,000 pounds at a rate of speed that exceeds about 10 inches per minute.

10. The jack assembly of claim 9 , wherein the recirculating ball nut assembly includes a housing with at least one track and a plurality of ball bearings, the elongated screw includes a plurality of threads wherein the track and threads are configured to receive the plurality of ball bearings therein such that as the elongated screw rotates, the plurality of ball bearings move through the threads and track and the housing translates along the elongated screw.

11. The jack assembly of claim 9 , further comprising a motor assembly including a rotor configured to rotate about a first axis within a housing.

12. The jack assembly of claim 11 , wherein the elongated screw is configured to rotate about a second axis within the outer and inner tubes such that the first axis is generally parallel to the second axis.

13. The jack assembly of claim 9 , further comprising an attachment assembly connected to a side portion of the outer tube that is configured to attach the jack assembly to a vehicle.

14. The jack assembly of claim 9 , further comprising a base attached to the inner tube.

15. The jack assembly of claim 14 , wherein the motor assembly is attached to the outer tube and is located opposite from the base.

16. The jack assembly of claim 9 , wherein the telescoping mechanism includes a motor having a horsepower rating of over 0.9 horsepower.

17. The jack assembly of claim 9 , wherein the telescoping mechanism includes a motor that displays an energy usage of over 670 watts.

18. The jack assembly of claim 17 , wherein the telescoping mechanism includes a motor having a horsepower rating of at least 1.12 horsepower and an energy usage rating of at least 832 watts.

19. The jack assembly of claim 9 , wherein the telescoping mechanism includes a motor that displays an energy usage of over 500 watts.

20. The jack assembly of claim 9 wherein the telescoping mechanism includes a single form of energy conversion from electrical to mechanical.

21. The jack assembly of claim 9 further comprising a self leveling foot.

22. The jack assembly of claim 9 , wherein the dust tube creates a labyrinth seal by providing a tortuous path that reduces exposure of debris against the elongated screw.

23. A single energy conversion high powered jack assembly for a towed vehicle, the jack assembly comprising:
an outer tube;
an inner tube operatively engaged with the outer tube;
a self leveling foot; and
a non-hydraulic telescoping mechanism operatively coupled with the outer and inner tubes, wherein the non-hydraulic telescoping mechanism telescopingly positions the outer tube relative to the inner tube, the non-hydraulic telescoping mechanism comprises:
an elongated screw;

a dust tube that surrounds the elongated screw and is positioned within the outer tube and the inner tube to reduce exposure of debris against the elongated screw; and
a recirculating ball nut assembly configured to translate along the elongated screw such that the outer and inner tubes are configured to be electronically controlled to telescope relative to one another between a retracted position and an extended portion, whereby the outer and inner tubes support a load that exceeds 8,000 pounds and telescope at a rate of speed that exceeds about 10 inches per minute under at least the 8,000 pound load.

24. The jack assembly of claim 23 , wherein the dust tube creates a labyrinth seal by providing a tortuous path that reduces exposure of debris against the elongated screw.

Assignees

• Cequent Performance Prod Inc
• Horizon Global Americas Inc

Inventors

• Drake Frank
• Alanko Erik

Classifications

• B60S9/08

  the screw axis being substantially vertical · CPC title

• B66F3/08

  screw operated (B66F3/44 takes precedence; gearings F16H) · CPC title

• B60D1/66 Primary

  Props · CPC title