Abstract A generally rectangular bracket is secured to the underside of a trailer and provides a slot for receiving a tongue that is mounted on a slidable sleeve. The lower side of the bracket is shorter than the upper side to receive a brace that is welded between the sleeve and the brace so that the weight of the trailer is supported on the brace. The sleeve is adjustably mounted on an elongated frame and is locked in any desired position along the frame by a conventional pawl and detent mechanism. A nut is welded to the lower end of the elongated frame and a guide collar is welded to the top end. A threaded shaft extends through the collar and nut to position the elongated frame above the ground. The upper end of the threaded shaft is provided with a square head to be turned by a wrench or ratchet. The lower end of the shaft is rounded and rests in a cup formed integrally on a flat support plate.
Inventors
👤 Otto F Hafeli
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-05 07:54
CPC Classifications
B; B66; B66F; B66F13/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
114 words
A jack for elevating and supporting a trailer or the like, comprising: a bracket secured to the underside of a trailer and having an opening therein; a tongue member insertable within said opening, said tongue member conforming closely to the shape of the opening to provide a snug fit therebetween; and means for adjustably supporting said tongue member above the ground, said means including a sleeve mounted on a elongated frame and being adjustably positioned along the frame for a rough adjustment by a pawl and ratchet mechanism, a threaded shaft threadably secured to the frame, for a fine adjustment; and a support plate resting on the ground surface for supporting the threaded shaft.
Claim 2
Dependent Claim
114 words
A jack for elevating and supporting a trailer or the like, comprising: a bracket secured to the underside of a trailer and having an opening therein; a tongue member insertable within said opening, said tongue member conforming closely to the shape of the opening to provide a snug fit therebetween; and means for adjustably supporting said tongue member above the ground, said means including a sleeve mounted on a elongated frame and being adjustably positioned along the frame for a rough adjustment by a pawl and ratchet mechanism, a threaded shaft threadably secured to the frame, for a fine adjustment; and a support plate resting on the ground surface for supporting the threaded shaft.
Claim 3
Dependent Claim
33 words
The jack defined by claim 1, wherein said opening in said bracket is a generally rectangular slot and said tongue member is generally rectangular and of a size slightly less than the slot.
Claim 4
Dependent Claim
59 words
The jack defined by claim 2, wherein said bracket includes an upper side and a lower side defining said slot, said lower side being smaller than said upper side to provide a recess at the outer end of said bracket, and further including a brace secured between said tongue member and said sleeve and being nested within said recess.
Claim 5
Dependent Claim
14 words
The jack defined by claim 1 wherein said tongue member has a transverse bend.