Matches 1 - 30 out of 30


Match Document Document Title
9003950 Air motor having a programmable logic controller interface and a method of retrofitting an air motor  
A pump assembly having an air motor includes a valve connected to a motive fluid inlet of the air motor. The valve shifts between a first position, in which a flow of motive fluid is directed into...
7713033 Double-acting, duplex pump controlled by two, two position spool valves  
The present invention provides a fluid control system and associated methods. The fluid control system includes a source of a pressurized fluid and a first spool valve having at least two...
6152013 Hydraulically actuated breaker with lost-motion prevention device  
A hydraulically actuated breaker with a lost-motion preventing device includes a cylinder portion (26) defining a first chamber (23) constantly communicated with a hydraulic pressure source (47)...
5894781 Hydraulic hammer  
A hydraulic hammer for driving a pile into soil in which an impact weight is arranged for being driven with reciprocating motion along guideways in a casing by a double-acting hydraulic cylinder....
5617771 Auto cycle pump  
An auto cycle pump in accordance with the invention includes a housing having a reservoir for storing hydraulic fluid. A hydraulic pump in the housing provides hydraulic flow. A directional valve...
5584666 Reduced icing air valve  
Provision is made for an air control valve to bypass the ice forming exhaust of a reciprocating pressure activation chamber in a reciprocating double diaphragm pump utilizing the supply pressure...
RE34301 Fluid operable engine  
A fluid operable engine has a cylinder in which a piston slides up and down. The cylinder has a cylinder wall and two end walls. The piston divides the cylinder into two chambers. The piston is...
4830230 Hydraulically controlled portioner apparatus  
An improved portioning assembly adapted for use in the precise portioning of food or other products is provided which makes use of a double-acting piston and cylinder assembly shiftable between...
4825960 Synchronized hydraulic hammer arrangement  
Hydraulic hammers are useful for transmitting high impact blows to a tool for fracturing hard material. When two hammers are used in combination the impact blows delivered to a common tool by the...
4192219 Hydraulic actuator  
A hydraulically operated reciprocating piston and a differential force operated valve are both in continuous fluid contact with a pressurized cushion chamber as well as the piston chamber...
3731592 VALVING MECHANISM FOR HYDRAULIC STORAGE MEANS, ESPECIALLY FOR HYDRAULIC TESTING APPARATUS  
The present valving mechanism forms part of the load piston cylinder means, for example, of a hydraulic testing apparatus. The load cylinder is provided with a first control inlet at each end...
3721091 IMPACT HYDRAULIC FORMING DEVICE  
An impact hydraulic forming device has a hydraulic pressure chamber with a bore filled with water, and a plunger is arranged to be thrust into the bore by a hammer which is unitary with the...
3662652 HYDRAULICALLY POWERED POWER UNIT  
An hydraulically powered multiplex pump having at least three pumping units, each operable in a cycle including suction, precompression and discharge phases, with the cycles being out of phase...
3619847 CONCEALED WINDSHIELD WIPER SYSTEM  
3460347 CONTROL VALVE ARRANGEMENT FOR HYDRAULIC MOTORS  
3405602 Fluid motor having a supply-and-exhaust valve carried by the piston  
3186306 Machine control device  
3045768 Fluid operated percussion drill  
3038446 Throttle valve for pneumatic percussive tool  
3016964 Device for extracting jammed rock drills  
2987045 Anti-friction rotation mechanism for rock drills  
2978842 Air operated valve grinder  
2955573 Pneumatic tool  
2954737 Adjustable pump and liquid proportioning device  
2942578 Rock drill  
2937619 Hole cleaning device  
2897762 Pressure intensifier  
2864313 Hydraulic intensifier  
2851996 Hydraulic control valve for machine tools  
2823646 Pneumatic tap hammer  

Matches 1 - 30 out of 30