A hand operated power tool is used for trimming and edge finishing a workpiece such as a counter top or desk top. The tool comprises a housing having two guide surfaces arranged substantially perpendicular to each other and an electric motor-driven cutter mounted in a recess in one of the guide surfaces, arranged parallel to one guide surface and perpendicular to the other guide surface. The two guide surfaces support the tool on a flat surface of the workpiece and maintain the cutter in positio...

A power tool, particularly a hammer drill, is equipped with a blower which is mounted on the output shaft of the motor which drives the tool element which is clamped in the chuck of the power tool. The particulate material which is removed by the tool element from a structure is entrained in a stream of air generated by the blower and conveyed toward the latter. Before the particulate material enters the blower, at least most of it impacts an impact member which extends across an inlet section o...

A drive transfer assembly for a low profile vehicle. The assembly is mounted to a differential housing and includes an input and axially aligned output shafts. One of the output shafts is preferably a pinion shaft for the primary axle differential. A clutch is operative under certain conditions to drive the other output shaft. A spring biased disc clutch is disclosed. The transfer assembly will provide a full four-wheel drive in the clutch engaged mode of operation and in the other mode of opera...

A method and apparatus for releasing for use, air that has been absorbed under pressure in sea water or in any other large free body of water. An elongated conduit, or equivalent means, is vertically disposed so that air released from its upper end is collected by an open-bottom container serving as a reservoir. The interface of the collected air and the submersion level of water within the reservoir is substantially below the free water surface level. A small amount of gas is introduced at the ...

A power equipment includes a rotor containing a storage battery or an assembly of storage batteries, a main driving electric motor, and a generator. The rotor does a fly-wheel's function. An inertia force of the rotor gained is efficiently utilized for driving of a car and moreover the excessive inertia force is converted into electric energy and stored in the storage batteries supplying efficiently an automobile with power.

A power wrench, or clamping tool, for tightening a bolt, nut and the like comprising a power shaft engaging the bolt, nut and the like, a driving power source of electromotive, pneumatic or hydraulic type, an anti-reaction force member for the prevention of rotation of the tool case due to the reaction force, a harmonic drive mechanism as the speed reduction mechanism between the power shaft and the driving power source, planetary gear device provided between the harmonic drive mechanism and the...

A prime source of mechanical power comprising an expansion chamber, an inlet into which expansible fluid is injected, and an outlet through which said fluid is exhausted after expansion in said chamber. Expansion of the fluid is achieved by application of a heat source directly to the expansion chamber, which expansion acts through a piston to create useful mechanical motion. The engine is preferably of a reciprocating type, while the heat source can be solar, gaseous, petroleum, nuclear, or ele...

A lip-type cartridge shaft seal has its toroidal body cavity filled with a silicone rubber adhesive sealant bonded to the main body of the seal. The silicone's adhesive properties and its lower hardness stabilize the body against collapse under intermittent or continuous high pressure forces without interfering with body flexibility.

A power transmission including a motor, a "fixed-fill" fluid coupling and a gear box, at least the "fixed-fill" fluid coupling of which is liquid cooled.

A power hoist is disclosed wherein a single operating lever is moved between haul, hold and lock positions. A load may be suspended when the hoist is in hold position by means of braking action which is primarily provided by closing a shunting switch across the leads of a DC motor whereby the motor functions as a brake, which holding action, when necessary, is supplemented by a positive mechanical locking device engageable with the gear train. The combination of electrical shunt holding means wi...