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Lift system

a technology of lifting system and lifting device, which is applied in the direction of vehicle maintenance, transportation items, and sofas, etc., can solve the problems of increased total cost of lifting mechanism, increased labor intensity, and lack of safety mechanisms of lifting device integrated into these often heavy lifting mechanisms, so as to prevent damage

Active Publication Date: 2007-12-20
IND AXLE CO LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0012] It is a further object of the present invention to provide an improved lifting device having a redundant safety feature which prevents damage in the event of lift component failure.
[0013] It is a further object of the present invention to provide an improved lifting device having visual safety indicators that warn a user of failure of components within the lift.

Problems solved by technology

As specialization in design and parts increase, total cost of the lift mechanism also increases.
Further, reliability may also suffer as a result of poor specialized designs and unproven component reliability.
Additionally, these lift devices often lack safety mechanisms integrated into these often heavy lifting mechanisms.
Lack of such redundant safety mechanisms leaves the RV and all property in it at risk to damage in the event of lift failure.
Further, users risk significant damage to themselves, family, or other visitors to the vehicle.
Lastly, these lift devices lack safety indicators to alert them to component failure on the lift devices.

Method used

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Examples

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Embodiment Construction

[0044] RV Lifting Device

[0045] An improved RV lifting device is provided in accordance with the present invention. Generally speaking, the lifting device uses a captured acme nut threaded onto an elongated acme screw. By rotating the acme screw, the captured acme nut pushes a lifting bracket upward or downward. Such a lifting device may be utilized for a variety of different purposes, including raising and lowering furniture or acting as a jack stand for a fifth wheel trailer.

[0046] Looking to FIGS. 1 and 1A, an embodiment of a lifting device of the present invention is shown. This general lifting device 100 functions by way of an elongated acme screw 106 which mounts to support bracket 112 by an acme screw mounting bracket 108. The acme screw mounting bracket 108 serves to hold the acme screw 106 to the support bracket 112, while allowing it to freely rotate.

[0047] An additional bracket can been seen in this embodiment: the acme nut bracket 102. As the name implies, the acme nut...

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PUM

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Abstract

An improved RV lift mechanism according to the present invention. In one embodiment, the lift functions by way of an elongated, rotatably mounted acme screw. A bracket slides parallel to the acme screw, securing to an acme screw and an object to be lifted. The acme nut is threaded onto the acme screw and further held from rotation by the bracket. Thus, as the acme screw turns, it presses against the bracket, lifting or lowering both it and its payload.

Description

CROSS REFERENCE TO RELATED APPLICATIONS [0001] This application claims priority to U.S. provisional application Serial No. 60 / 430,425 filed on Dec. 2, 2002 entitled Removable Motor Brake For Use With Vehicle Slide Out, and U.S. provisional patent application Serial No. 60 / 488,633 filed Jul. 18, 2003 entitled Safety Device for Load Bearing Nut, the contents of which are incorporated herein by reference.BACKGROUND OF THE INVENTION [0002] In recreational vehicles and trailers (collectively, “RV's”), there is an ever present need for lifting mechanisms. While such lifting devices are rarely a necessity in RV's, they nevertheless maintain an important functional role with respect to space maximization, storage, and RV jacks. [0003] Generally, RV's are constrained in size by their safety to drive, ease to maneuver, and affordability to the average traveler. Further, RV manufacturing companies have strived to provide the greatest number of features in the least amount of space. Consequentl...

Claims

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Application Information

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IPC IPC(8): B60S9/02B60P3/39B60S9/08B66F3/08
CPCB60P3/39B66F3/08B60S9/08
Inventor BLODGETT, RAYMOND W. JR.FLETES, BENJAMIN J.
Owner IND AXLE CO LLC