Dual-speed hand pump aircraft jack

摘要

This two-stage jack apparatus for lifting aircraft comprises: a tripod base having three legs; a base tube; a ring having an orifice therethrough, wherein the ring engaging end of each leg is attached to the ring; a cylinder housing a jack wherein the base tube supports the cylinder and wherein the cylinder extends through the orifice of the ring; a two stage hydraulic extension attached to the jack; and a dual speed hand pump comprising a high volume low pressure pump for quick ram actuation to the jack point and a low volume high pressure pump used to actuate rams with a hydraulic pump.

主权项

1. A two-stage jack apparatus for lifting aircraft having a fuselage, the apparatus comprising:
a tripod base having three legs wherein each leg has a base, surface, engaging end and a higher ring engaging end; a base tube; three leg braces, wherein each leg brace is connected to the base end of the leg and connected to the base tube; a stop collar having an orifice therethrough, wherein the ring engaging end of each leg is attached to the ring; a cylinder housing a jack wherein the base tube supports the cylinder and wherein the cylinder extends through the orifice of the ring; a jack pad attached to a top end of the jack; a mechanical extension attached to the jack; a two stage hydraulic extension attached to the jack; a dual speed hand pump comprising a high volume low pressure pump for quick ram actuation to the jack point and a low volume high pressure pump used to actuate rams with a hydraulic pump; and hydraulic pumps and rams for raising and lowering the jack.