US 11,142,436 B1 · Portable crane formed of composite members

Abstract

A portable gantry crane formed of composite members includes a composite material I-beam. Two or more support members are formed of a composite material and each support member supports the I-beam when the portable gantry crane is in an upright position. Two or more end housings are included, each end housing enclosing a top end of one of the two or more support members and coupled thereto using adhesive. A plurality of latch structures are coupled with the I-beam, each latch structure including a latch, and each end housing having a latch receiver, each latch in combination with a latch receiver allowing one of the latch structures to be releasably fixedly coupled with an end housing. In implementations a plurality of latch structures are coupled with the I-beam, each latch structure having a latch structure enclosure and each latch structure enclosure at least partially enclosing one of the end housings.

Claims18

Dependent claims

A crane comprising:

a boom;
a mast;
a boom end housing at least partially enclosing a portion of the boom, the boom end housing comprising an opening fully contained in the boom end housing on a first side of the boom end housing and a slot on a second side of the boom end housing, the first side of the boom end housing opposite the second side of the boom end housing;
wherein the slot extends to an outer edge of the boom end housing;
and
wherein the boom is configured to be coupled to the mast through a pin configured to be received by both the opening and the slot.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

16/746,338Filed 17 Jan 2020 · continuation

Priority

11 Mar 2013

Granted

12 Oct 2021

Term ends

Not estimatedThe source records don’t support an estimate.

Classification33 codes

B66C 19/02
Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries: collapsible
B66C 23/166
With jibs supported by columns, e.g. towers having their lower end mounted for slewing movements: simple cranes with jibs which may be fixed or…
B60P 1/5404
Using cranes for self-loading or self-unloading: with a fixed base
B60P 1/5414
Attached to the roof of the vehicle: and having the first pivot on a horizontal axis

Family

Application61/776,018Us provisional application · filed 11 Mar 2013

Application14/168,696Parent of this division · filed 30 Jan 2014

Application15/382,609Parent of this continuation · filed 17 Dec 2016

US 9,630,816 B1Parent of this division · filed 25 Apr 2017

US 10,577,227 B1Parent of this continuation

Application15/382,609Parent of this division

US 11,142,436 B1This patent

From the US filing history. Foreign family members aren’t listed.

Portable crane formed of composite members

Life of this patent

Portable crane formed of composite members

Life of this patent

Abstract

Claims18