FIG. 1 is a side view of a landing jack lift according to an embodiment of the present invention.

FIG. 2 is a side view of the landing jack lift shown in FIG. 1 with the landing jack in a down position.

FIG. 3 is a side view of the landing jack lift shown in FIG. 1 with the landing jack in an up position.

DETAILED DESCRIPTION OF THE INVENTION

In the following detailed description of the invention, reference is made to the drawings in which reference numerals refer to like elements, and which are intended to show by way of illustration specific embodiments in which the invention may be practiced. It is understood that other embodiments may be utilized and that structural changes may be made without departing from the scope and spirit of the invention.

Referring to the figures, a landing jack lift 100 is shown having an upright lever portion 105 which is pivotally connected to a base plate 130. Base plate 130 allows landing jack lift 100 to be used in soft soil conditions and provides a stable support in use. A lifting arm 120 is pivotally connected to upright lever portion 105 using a pivot 150. Pivot 150 is a bolt, but other pivoting means may be used such as pins, rivets, etc. as is known in the art. A lifting plate 125 is provided to fit under a landing jack 165 to allow a user to move landing jack 165 without having to bend over or lie on the ground. Lifting plate 125 is pivotally mounted so the as the angle changes with respect to lifting arm 120, lifting plate 125 maintains level contact with landing jack 165. Additionally, lifting plate 125 telescopically fits within lifting arm 120 in order to allow a user to adjust the length.

Because landing jacks 165 have locking pin 170 to retain landing jack 165 in the selected position. Landing jack pin 170 needs to be disengaged when moving landing jack 165. A pin pulling arm 115 is pivotally connected to upright lever portion 105 to hold locking pin 170 in an open position while moving and then released to engage.

A locking pin catch 145 is disposed on an end of pin pulling arm 115 and has a clip edge to retain locking pin 170. Of course other shapes and means may be used as long as locking pin catch 145 selectively catches locking pin 170. Additionally locking pin catch is biased with a coil spring (not shown) to maintain a force on locking pin 170. Of course other biasing means may be used such a coil spring, etc. as long as locking pin 170 is held in an open position while moving landing jack 165.

A pin 135 is providing to move locking pin catch 145 and moves within a groove disposed along a top portion of pin pulling arm 115 and connects a pin pulling insert arm 140 that telescopically fits within pin pulling arm 115.

Although the instant invention has been described in relation to particular embodiments thereof, many other variations and modifications and other uses will become apparent to those skilled in the art.

CLAIM

1. A landing jack lift comprising:

· an upright lever portion;

· a base plate;

· said upright lever portion being pivotally attached to said base plate;

· a lifting arm pivotally disposed along a lower portion of said upright lever portion;

· a pin pulling arm rotatably disposed on said upright lever portion and above said lifting arm;

· a lifting plate pivotally disposed on another end of said lifting arm wherein said lifting plate removably fits under a landing jack foot.

2. The landing jack lift according to claim 1 wherein said pin pulling arm has a locking pin holding means for selectively holding said locking pin in an unlocked position.

3. The landing jack lift according to claim 2 wherein said locking pin holding means comprises a spring biased holding clip.

4. The landing jack lift according to claim 1 further comprising a handle portion disposed along an upper end of said upright lever portion.

Task 4. Compare the two versions of patent forming. What are the vivid differences between patent issued nowadays and the patent description applied before?