Patent AU-2020100188-A4 (AU)
Title: The A.P. Load Management Support System is a developed concept for load management & support for reticulated cables of a structured wiring system
Inventor: BURNESS EDWARD
IPC: H02G7/06
Filed: 2020-02-06
Granted: 2020-03-12
Abstract: 4.02.2020 Patent Application A.P. Load Management Support System Page - 9 Provisional Patent No. 2019900730 In summary, the APLMSS is a devised concept that load manages & supports the reticulated cables of a structured electrical wiring system. The concept provides for the erecting of various length Catenaries made up of 1 or more spans of stranded galvanised 3.0mm diameter wire rope as standard which has a minimum breaking strain ("BS") of 540kG with a calculated Safe Working Load ("SWL") of 90kG derived for this application, based on a multiple factor of 6 i.e. 6 x SWL = BS. Each span of catenary is erected to attach to fixed anchor positions as selected in accordance with the Standards that apply for APLMSS installations. The length of the catenary wire between consecutive fixed anchors is calculated from formula. It is not possible to derive a reliable formula that would justify & warrant a constant value SWL over an entire catenary. It has been resolved that the APLMSS calculated SWL of 90kG for the 3mm diameter galvanised 7 strand catenary wire was sustainable up to a maximum direct distance of 8M between consecutive support anchors provided the sag height similarly restrained to not less than 450mm with scaling adjustment for shorter spans. Span extensions beyond 8.OM proved to me entirely unreliable with drastic reductions in the SWL capacity of the catenary. The justifiable conclusion has been the development of APLMSS with a warranted & constant SWL of 90kG over the entire length of the catenary horizontal support system The imposed limitations of 8.OM between consecutive anchors was the catalyst that prompted the similar limits of 20M on the lengths of coiled catenary wire available for erection. The concept provides for the erecting of various length Catenaries being a consortium of 1 or more spans formed by Wire Rope Safety Anchors ("WRSA"), two of which are separately locked on to the catenary wire at a formula measured distance apart to serve as rope anchors which attach to their allocated fixed position Anchors. The combined length of a number of erected in line Catenary spans, formed from the 20M lengths of catenary wire, equates to the characteristics & the principles that apply to a continuous Catenary of the same length, but has the advantage that strain tensioning of catenary spans is neither required nor warranted due to the reduced span lengths. The excess of a 20M length of catenary wire often continues beyond the last formed rope anchor point to enable further WRSA to participate in the formatting of additional catenaries with the same characteristics & attributes of the previously formed Catenaries. The SRS clipped to & suspended from the erected Catenaries permit load management allowing the cable load to be directly placed in position on the SRS support which action will normally eliminate premeasure & prior cutting of cables to 4.02.2020 Patent Application A.P. Load Management Support System Page - 10 Provisional Patent No. 2019900730 be loaded and further avoids the subsequent disruption & costs that attach to drawing-in the cable load. Conjunctive Applications. The benefits derived from the installation of the APLMSS are not confined to structured wiring systems. Enquiries reveal that Building Contractors & other parties are foreseen as prominent supporters & customers for the APLMSS unit packs as preliminary items in their building construction offers to satisfy the sites temporary electrical works, where the following examples are typical: • Pedestrian traffic ways within buildings under construction where the catenary wire could play a multiple role requiring the load capacity of the catenary to be adjusted to cater for a multiple of load duties, likely to include temporary installations, not limited to: • Lighting fittings support, lighting & power cabling management & support, an elevated & protective support for construction power leads as regulated in the various building codes. • Convenient support for signage etc. • Stair well lighting for cable distribution; general & evacuation light fittings support. • Aerial line for services between buildings e.g. Site Office to Building Construction site, support lines for power, hydraulics, intercom & phone lines etc. • Aerial lines for power supply etc. to outbuildings. • Aerial lines to a demountable & totally recoverable stayed pole providing temporary external services to motorised hoist, outbuildings, power generator, water hydrant, battery bank and other 4.02.2020 Patent Application A.P. Load Management Support System Page - 7 Provisional Patent No. 2019900730 SRS& ANCHOR WRSA5 HOR HOOK; HIGH TENSILE BRASS; FOR WOOD, CONCRETE; FULLY RECOVERABLE c/w THREAD ANCHOR A ANCHOR; OPTIONAL SUSPENSION or IN-LINE CONNECTION;HIGH TENSILE BRASS or S.S.. 2 SPLIT RING SUPPORT;LOAD MANAGEMENT RING;SERRATED FACE WIRE GRIP; m CLOSED RING DIA.; n STEEL WIRE CATENARY; 90kG S.W.L. BETWEEN ANCHORS