"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
|7097578||Bat having a flexible handle|
A bat has an elongate tubular striking member of a first material, and an elongate handle member of a second material. The handle may be of composite material laid up in selected layers and orientation to produce selected weight distribution, strength, and stiffness...
|5524714||System for lubricating and reciprocating a piston in a fluid-activated, percussive paving breaker|
A system for lubricating and reciprocating a piston in a fluid-activated, percussive paving breaker includes a unitary valve assembly positioned within a bore of a rear portion of a tool housing, the valve assembly having an oil reservoir for lubricating ...
|3942595||Self-propelled percussive machine for boring holes|
A percussive machine having an impact mechanism accommodated to a housing with a hammer piston imparting blows to a rock-destroying member. There is provided an air-supply duct for supplying compressed air to the impact mechanism and to the hole face. In ...