Trailer frame with load bunks

Claim 2

A load-carrying trailer assembly comprising a wheeled main frame having two side arms of substantially regular geometric cross-section, at least one set of transversely aligned pairs of spaced lugs on each of said side arms, each of said lugs being fixedly secured to said side arms; at least one load supporting bunk having projections at either end thereof, the width of said projections being approximately equal to the spacing between said pairs of lugs; and said projections being snugly disposed between opposite pairs of said lugs, so as to prevent longitudinal movement of said bunk relative to said frame when a load is placed on said bunk.

Claim 3

The load-carrying trailer assembly of claim 1, and anchor means on the lower ends of said projections of the bunks for connection to load binder means engaged around a load supported on the bunks.

Claim 4

The load-carrying trailer assembly of claim 1, and storage means on said main frame for securing the bunks in transverse vertically stacked relation on said main frame when the bunks are not in use.

Claim 5

The load-carrying trailer assembly of claim 1, and wherein said bunks comprise substantially straight main bar portions and said end portions comprise pairs of generally L-shaped plate members secured to opposite sides of the ends of said main bar portions in parallel relation with their top arms projecting outwardly.

Claim 6

The load-carrying trailer assembly of claim 4, and cross rod elements connecting the L-shaped plate members at their lower portions to define anchor means for a load binder.

Claim 7

The load-carrying trailer assembly of claim 5, and wherein the L-shaped plate members have rounded inside corner portions.

Claim 8

The assembly set forth in claim 1 wherein said projections are shaped to substantially conform to said cross-section of said side arms.

Claim 9

The assembly set forth in claim 7 wherein said lugs are shaped to substantially conform to the outer surface of said side arms.

Claim 10

The load-carrying trailer assembly of claim 8, and wherein said projections are generally right-angular in shape and engage the side arms at their inside corner portions.

Claim 11

A load-carrying trailer assembly comprising a wheeled generally U-shaped main frame, at least one set of transversely aligned pairs of lugs on the side arms of said main frame, and load-supporting bunks having end portions formed to supportingly engage on said side arms, said end portions being closely receivable between transversely aligned pairs of lugs to maintain the bunks transverse relative to said side arms when a load is placed on the bunks and to prevent shifting of the bunks, said end portions comprising pairs of spaced parallel generally L-shaped plate members on the ends of the bunks with outwardly directed top arms, said plate members being spaced so as to be closely received between pairs of lugs with the inside corner portions of the plate members engaging the side arms.

Claim 12

A load-carrying trailer assembly comprising a wheeled generally U-shaped main frame, at least one set of transversely aligned pairs of lugs on the side arms of said main frame, and load-supporting bunks having end portions formed to supportingly engage on said side arms, said end portions being closely receivable between transversely aligned pairs of lugs to maintain the bunks transverse relative to said side arms when a load is placed on the bunks and to prevent shifting of the bunks, said end portions comprising pairs of spaced parallel generally L-shaped plate members on the ends of the bunks with outwardly directed top arms, said plate members being spaced so as to be closely received between pairs of lugs with the inside corner portions of the plate members engaging the side arms.

Claim 13

The load-carrying trailer assembly of claim 10, and wherein said inside corner portions are shaped to substantially conform with the shape of said side arms.

Claim 14

The load-carrying trailer assembly of claim 10, and cross rod elements connecting the plate members and defining anchor means for connecting load binder means engaged around the load supported on the bunks.

Claim 15

The load-carrying trailer assembly of claim 12, and wherein said bunks are provided at their midportions with upwardly facing concave saddle elements for supportingly receiving a rounded load.

Claim 16

A load-carrying trailer assembly comprising a wheeled generally U-shaped main frame, at least one set of transversely aligned pairs of lugs on the side arms of said main frame, and load-supporting bunks having end portions formed to supportingly engage on said side arms, said end portions being closely receivable between transversely aligned pairs of lugs to maintain the bunks transverse relative to said side arms when a load is placed on the bunks and to prevent shifting of the bunks, and storage means on said main frame for securing the bunks in transverse vertically stacked relation on said main frame when the bunks are not in use, said storage means comprising spaced upstanding members secured on said side arms shaped to lockingly receive said end portions therebetween, and removable retention means on at least one of the upstanding members located to overlie the end portion of the uppermost bunk.

Claim 17

A load-carrying trailer assembly comprising a wheeled generally U-shaped main frame, at least one set of transversely aligned pairs of lugs on the side arms of said main frame, and load-supporting bunks having end portions formed to supportingly engage on said side arms, said end portions being closely receivable between transversely aligned pairs of lugs to maintain the bunks transverse relative to said side arms when a load is placed on the bunks and to prevent shifting of the bunks, and storage means on said main frame for securing the bunks in transverse vertically stacked relation on said main frame when the bunks are not in use, said storage means comprising spaced upstanding members secured on said side arms shaped to lockingly receive said end portions therebetween, and removable retention means on at least one of the upstanding members located to overlie the end portion of the uppermost bunk.

Claim 18

A load-carrying trailer assembly comprising a wheeled generally U-shaped main frame, at least one set of transversely aligned pairs of lugs on the side arms of said main frame, and load-supporting bunks having end portions formed to supportingly engage on said side arms, said end portions being closely receivable between transversely aligned pairs of lugs to maintain the bunks transverse relative to said side arms when a load is placed on the bunks and to prevent shifting of the bunks, and a transversely extending vertical hoist arch member secured on said main frame, said hoist arch member having respective side post elements extending perpendicular to the side arms of the main frame, and upstanding bars on the arch member spaced from the side post elements extending perpendicular to the side arms of the main frame and defining therewith receiving spaces for the end portions of the bunks, and removable retention pins extending through the bars and located to retentively overlie the end portions of the bunks, for retentively storing the bunks in stacked transverse positions when not in use.

Claim 19

A load-carrying trailer assembly comprising a wheeled generally U-shaped main frame, at least one set of transversely aligned pairs of lugs on the side arms of said main frame, and load-supporting bunks having end portions formed to supportingly engage on said side arms, said end portions being closely receivable between transversely aligned pairs of lugs to maintain the bunks transverse relative to said side arms when a load is placed on the bunks and to prevent shifting of the bunks, and a transversely extending vertical hoist arch member secured on said main frame, said hoist arch member having respective side post elements extending perpendicular to the side arms of the main frame, and upstanding bars on the arch member spaced from the side post elements extending perpendicular to the side arms of the main frame and defining therewith receiving spaces for the end portions of the bunks, and removable retention pins extending through the bars and located to retentively overlie the end portions of the bunks, for retentively storing the bunks in stacked transverse positions when not in use.

Claim 20

A load-carrying trailer assembly comprising a wheeled generally U-shaped main frame, at least one set of transversely aligned pairs of lugs on the side arms of said main frame, and load-supporting bunks having end portions formed to supportingly engage on said side arms, said end portions being closely receivable between transversely aligned pairs of lugs to maintain the bunks transverse relative to said side arms when a load is placed on the bunks and to prevent shifting of the bunks, wherein said bunks comprise substantially straight main bar portions and said end portion comprise pairs of generally L-shaped plate members secured to opposite sides of the ends of said main bar portions in parallel relation with their top arms projecting outwardly and a transversely extending vertical hoist arch member having side post elements and bottom bars rigidly secured perpendicularly to said side post elements, means securing said bottom bars on the side arms of the main frame, upstanding channel bars on said bottom bars spaced from the side post elements sufficiently to lockingly receive the L-shaped plate members horizontally between the channel bars and the side post elements, whereby the bunks can be stored transversely in stacked relationship, retention pins extending horizontally through the top portions of the channel bars and having end portions located to overlie the uppermost L-shaped plate members, and locking spring clips removably engaged through the portions of the retention pins in the channel bars to hold the retention pins in bunk-retaining positions.

Claim 21

A load-carrying trailer assembly comprising a wheeled generally U-shaped main frame, at least one set of transversely aligned pairs of lugs on the side arms of said main frame, and load-supporting bunks having end portions formed to supportingly engage on said side arms, said end portions being closely receivable between transversely aligned pairs of lugs to maintain the bunks transverse relative to said side arms when a load is placed on the bunks and to prevent shifting of the bunks, wherein said bunks comprise substantially straight main bar portions and said end portion comprise pairs of generally L-shaped plate members secured to opposite sides of the ends of said main bar portions in parallel relation with their top arms projecting outwardly and a transversely extending vertical hoist arch member having side post elements and bottom bars rigidly secured perpendicularly to said side post elements, means securing said bottom bars on the side arms of the main frame, upstanding channel bars on said bottom bars spaced from the side post elements sufficiently to lockingly receive the L-shaped plate members horizontally between the channel bars and the side post elements, whereby the bunks can be stored transversely in stacked relationship, retention pins extending horizontally through the top portions of the channel bars and having end portions located to overlie the uppermost L-shaped plate members, and locking spring clips removably engaged through the portions of the retention pins in the channel bars to hold the retention pins in bunk-retaining positions.

Claim 22

A load-carrying trailer assembly comprising a wheeled generally U-shaped main frame, at least one set of transversely aligned pairs of lugs on the side arms of said main frame, and load-supporting bunks having end portions formed to supportingly engage on said side arms, said end portions being closely receivable between transversely aligned pairs of lugs to maintain the bunks transverse relative to said side arms when a load is placed on the bunks and to prevent shifting of the bunks, and wherein said bunks comprise substantially straight main bar portions and said end portions comprise pairs of generally L-shaped plate members secured to opposite sides of the ends of said main bar portions in parallel relation with their top arms projecting outwardly, and wherein said straight main bar portions are of substantially rectangular cross-section and said L-shaped plate members are rigidly secured to opposite flat sides of said main bar portions and have bottom portions depending below the main bar portions, and cross rod elements connecting said depending bottom portions to define anchor means for a load binder.

Claim 23

A load-carrying trailer assembly comprising a wheeled generally U-shaped main frame, at least one set of transversely aligned pairs of lugs on the side arms of said main frame, and load-supporting bunks having end portions formed to supportingly engage on said side arms, said end portions being closely receivable between transversely aligned pairs of lugs to maintain the bunks transverse relative to said side arms when a load is placed on the bunks and to prevent shifting of the bunks, and wherein said bunks comprise substantially straight main bar portions and said end portions comprise pairs of generally L-shaped plate members secured to opposite sides of the ends of said main bar portions in parallel relation with their top arms projecting outwardly, and wherein said straight main bar portions are of substantially rectangular cross-section and said L-shaped plate members are rigidly secured to opposite flat sides of said main bar portions and have bottom portions depending below the main bar portions, and cross rod elements connecting said depending bottom portions to define anchor means for a load binder.