Trailer jack block and stop

Abstract

A jack block and stop for a trailer includes an internal relatively lightweight support structure, a bottom surface having a relatively flat aspect to provide stable support when weight is applied on said jack block and stop, an upper surface having relatively flat aspect and a central open surface entirely extending through from said upper surface to said bottom surface which is large enough to at least part of a trailer part to retain said jack block thereabout in a stored mode.

Claims

1. A jack block and stop in combination with a trailer having an axially extendable foot having a width W below the trailer and further having a frame rail of a width RW, which includes: an internal support structure; a bottom surface having a length L and a relatively flat aspect to provide stable support when weight is applied on said jack block and stop; an upper surface having length L and a relatively flat aspect; at least two sides interconnecting said bottom surface and said upper surface which form an acute angle, said two sides spanning more than half said length L; a third side surface interconnecting said bottom surface and said upper surface; and a central opening entirely extending through from said upper surface and to said bottom surface and located on the third side surface and having a depth D and width T which is larger than width RW and less than width W and capable of receiving the frame rail and retaining said jack block and stop on the frame rail in a stored mode and for receiving the foot on said upper surface without passing through said central opening in a foot deployed mode.

2. The jack block and stop of claim 1, wherein said jack block includes rubberized coating encasing surface to provide anti-slip and ease in cleaning.

3. The jack block and stop of claim 1, said upper surface and said bottom surface include one of a complementary respective male and female surface aspect to provide stackability of a like formed jack block and stop.

4. The jack block and stop of claim 1, wherein said internal structure spans between said upper surface and said bottom surface.

5. The jack block and stop of claim 1, wherein said jack block and stop has a width larger than the foot of the trailer.

6. The jack block and stop of claim 1, wherein said third side surface has connection surfaces on either side of said central opening.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a perspective view of the instant invention.

(2) FIG. 2 is a top view of the stand support of the invention.

(3) FIG. 3 is a bottom view of the invention.

(4) FIG. 4 is side view of the invention.

(5) FIG. 5 is a perspective view of the invention in a stored mode.

(6) FIG. 6 is a perspective view of the invention in use in supporting a trailer.

(7) FIG. 7 is a top another embodiment of the invention.

(8) FIG. 8 is a top view of the embodiment in FIG. 7 showing a part of a trailer frame received therein.

(9) It should be understood that the drawings are not necessarily to scale and that the embodiments are illustrative views. It should be understood, of course, that the invention is not necessarily limited to the particular embodiments illustrated herein.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

(10) Referring now to the drawings, a jack block and stop of the instant invention is generally designated by the numerals 10 and 10. The jack block and stop 10 is preferably for use with a trailer 12 of the type having an integral jack 14 at a forefront 16 of the trailer 12. The jack 14 has an upper stem 18 and crank handle 20 extending above the trailer 12 and a lower end 21 having an axially extendable foot 22 below the trailer 12.

(11) The jack block and stop 10 includes an internal relatively lightweight support structure 30, a bottom surface 32 having a relatively flat aspect 34 to provide stable support when weight is applied on the jack block and stop 10, an upper surface 36 having relatively flat aspect 38, and a central open surface 40 entirely extending therethrough from the upper surface 36 to the bottom surface 32 which is large enough to receive the crank handle 20 therethrough and at least part of the upper stem 18 to retain the jack block and stop 10 thereabout in a stored mode. For example, the central open surface 40 can be less than about 3 inches in diameter. The central open surface 40 is preferably smaller than the foot 22 to prevent the same from passing entirely therethrough. Thus, in the case where the foot 22 includes a wheel 23, the central open surface 40 can receive part of the wheel 23 therein which serves to fix its position against movement. The jack block and stop 10 can also include rubberized coating 42 encasing surfaces thereof and provide an anti-slip surface as well as an easy to clean surface.

(12) In the embodiment shown in FIG. 7 and FIG. 8, jack block and stop 10 includes a modified central open surface 40 which extends from one side 39 inward a depth D and is configured to complementary receive rail 41 having a width RW. Thus, a slot 40 is created to alternatively receive a frame rail 41 on trailer 12 and maintain the jack block and stop 10 on the rail 41. In this case, connection surfaces 43 can be provided on the jack block and stop 10 surfaces 39 to enable a securing line 45, such as a bungee cord to be connected to secure the same to the trailer for transport. The central open surface 40 is smaller in at least one transverse direction T (width T) than the width W of foot F to prevent the same from passing entirely therethrough. Note in this embodiment, there is provided a greater landing area 46 on which a foot F can be disposed.

(13) At least two sides 52 and 54 interconnect bottom surface 32 and the upper surface 36 which form an acute angle. The two sides 52 and 54 span more than half the length L of the lower surface 32 and upper surface 36.

(14) The internal structure 30 can span between the upper surface 36 and bottom surface 32 from about 1 inch to 6 inches, for example. Larger spans can be achieved through a single core structure or laminate structure, for example, plywood laminate or plastic formed core, which is encased in the rubberized coating 42. It is envisioned that in the case where the internal structure span is smaller providing a thinner inner support structure 30, the upper surface 36 and bottom surface 32 can include a respective female and male complementary surface 37 and 33 aspects, respectively, to achieve stable way of stacking of like formed jack block and stops 10. It is recognized that the make female surfaces could be reversed. A suitable width for the jack block and stop 10 can preferably be from about 6 to 12 inches, for example. It is contemplated that jack block and stop 10 can be cylindrical or polygonal shape which can provide enhanced ease of storage about the stem 18 or rail 41.

(15) The contents of all references cited in the instant specifications and all cited references in each of those references are incorporated in their entirety by reference herein as if those references were denoted in the text.

(16) The inventors hereby state their intent to rely on the Doctrine of Equivalents to determine and assess the reasonably fair scope of the present invention as pertains to any apparatus not materially departing from but outside the literal scope of the invention as set forth in the following claims.

(17) While the many embodiments of the invention have been disclosed above and include presently preferred embodiments, many other embodiments and variations are possible within the scope of the present disclosure and in the appended claims that follow. Accordingly, the details of the preferred embodiments and examples provided are not to be construed as limiting.

(18) It is to be understood that the terms used herein are merely descriptive rather than limiting and that various changes, numerous equivalents may be made without departing from the spirit or scope of the claimed invention.