Abstract: In some embodiments, a multipurpose ladder has a first inner section. The ladder has a first articulated hinge and a second articulated hinge. The ladder has a second inner section. The ladder has a first outer section. The ladder has a first locking bar. The ladder has a second outer section. The multipurpose ladder may have a plurality of brackets disposed about outer rails of the outer sections. The brackets provide support to each of the outer rails and strengthens them against bending forces so the rails can be thinner and of lighter weight. The ladder may have an ANSI duty rating of 1 A or an ANSI duty rating of 1 AA.

Abstract: A multipurpose ladder having a first inner section. The ladder has a first articulated hinge and a second articulated hinge. The ladder has a second inner section. The ladder has a first outer section. The ladder has a first locking bar. The ladder has a second outer section. The multipurpose ladder may have a plurality of brackets disposed about outer rails of the outer sections. The brackets provide support to each of the outer rails and strengthens them against bending forces so the rails can be thinner and of lighter weight. The ladder may have an ANSI duty rating of 1A or an ANSI duty rating of 1AA. A method for using a multipurpose ladder. A method for producing a multipurpose ladder.

Abstract: A device for dispensing a hydrofluoroolefin vapocoolant composition as an aerosol is disclosed. The device comprises an aerosol-dispensing container comprising an internal chamber, a valve, a dispensing hole, and an actuator. The device also comprises a hydrofluoroolefin vapocoolant composition comprising HCFO-1233zd at 70% to 100% (weight/weight) and, optionally, HFO-1234ze in at 0% to 30% (weight/weight). The hydrofluoroolefin vapocoolant composition is stored within the internal chamber. The aerosol-dispensing container is configured so that depressing the actuator reversibly opens the valve to allow the hydrofluoroolefin vapocoolant composition to flow from the internal chamber, past the valve, and through the dispensing hole, thereby dispensing the hydrofluoroolefin vapocoolant composition from the aerosol-dispensing container. A method of treating pain and/or swelling of a tissue of a patient by use of the device also is disclosed.

Abstract: A multipurpose ladder having a first inner section. The ladder has a first articulated hinge and a second articulated hinge. The ladder has a second inner section. The ladder has a first outer section. The ladder has a first locking bar. The ladder has a second outer section. The multipurpose ladder may have a plurality of brackets disposed about outer rails of the outer sections. The brackets provide support to each of the outer rails and strengthens them against bending forces so the rails can be thinner and of lighter weight. The ladder may have an ANSI duty rating of 1A or an ANSI duty rating of 1AA. A method for using a multipurpose ladder. A method for producing a multipurpose ladder.