US 6,889,994 B1Granted

Trailer pulling apparatus

OwnerJason Birkenbaughinventor

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Abstract

A trailer pulling apparatus consisting of a quill having a bore and having an outer surface; a trailer mount fixedly attached to the outer surface of the quill; a tongue having forward and rearward ends, the tongue slidably extending through the bore of the quill; a hitch fixedly attached to the forward end of the tongue; and an automatically disengagable slide controlling spring latch connected operably to the quill and to the tongue, the spring latch automatically locking the tongue with respect to the quill upon successive rearward and forward motions of the tongue through the quill.

Claims7

Dependent claims

A trailer pulling apparatus comprising:

(a) a quill having a bore and having an outer surface;
(b) trailer mounting means fixedly attached to the quill;
(c) a tongue having a forward end and having a rearward end, the tongue extending through the bore of the quill;
(d) a hitch fixedly attached to the forward end of the tongue;
(e) spring Biasing means;
(f) a pin latch;
and,
(g) slide controlling means fixedly attached to the quill, the slide controlling means being adapted for alternately resisting and permitting sliding movement of the tongue through the bore of the quill;
the slide control means comprising a shear pin, a first shear pin receiving aperture, and a second shear pin receiving aperture, the first and second shear pin receiving apertures respectively extending through the quill and through the tongue, the first and second shear pin receiving apertures being alignable and being fitted for receipts of the shear pin;
the slide control means further comprising a pin guiding bracket, the shear pin being mounted slidably within the pin guiding bracket for movement between first and second positions, the shear pin extending into the quill's bore while in its first position, the shear pin being withdrawn from the first position while in the second position;
the spring biasing means being operatively connected to the shear pin and to the pin guiding bracket, the spring biasing means being adapted for moving the shear pin to the first position;
the pin latch operatively spanning between the pin guiding bracket and the shear pin, the pin latch being adapted for releasably holding the shear pin in the second position;
and
(h) pin releasing means fixedly attached to the forward end of the tongue, the pin releasing means being adapted for, upon rearward sliding motion of the tongue through the quill's bore, automatically disengaging the pin latch, freeing the shear pin for spring biased movement to the first position.

11 more elements

Dependencies are inferred from the claim text.

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Abstract

A trailer pulling apparatus comprising:

(a) a quill having a bore and having an outer surface;
(b) trailer mounting means fixedly attached to the quill;
(c) a tongue having a forward end and having a rearward end, the tongue extending through the bore of the quill;
(d) a hitch fixedly attached to the forward end of the tongue;
(e) spring Biasing means;
(f) a pin latch;
and,
(g) slide controlling means fixedly attached to the quill, the slide controlling means being adapted for alternately resisting and permitting sliding movement of the tongue through the bore of the quill;
the slide control means comprising a shear pin, a first shear pin receiving aperture, and a second shear pin receiving aperture, the first and second shear pin receiving apertures respectively extending through the quill and through the tongue, the first and second shear pin receiving apertures being alignable and being fitted for receipts of the shear pin;
the slide control means further comprising a pin guiding bracket, the shear pin being mounted slidably within the pin guiding bracket for movement between first and second positions, the shear pin extending into the quill's bore while in its first position, the shear pin being withdrawn from the first position while in the second position;
the spring biasing means being operatively connected to the shear pin and to the pin guiding bracket, the spring biasing means being adapted for moving the shear pin to the first position;
the pin latch operatively spanning between the pin guiding bracket and the shear pin, the pin latch being adapted for releasably holding the shear pin in the second position;
and
(h) pin releasing means fixedly attached to the forward end of the tongue, the pin releasing means being adapted for, upon rearward sliding motion of the tongue through the quill's bore, automatically disengaging the pin latch, freeing the shear pin for spring biased movement to the first position.

11 more elements