Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Gardner-Denver Company Patents
Assignee:
Gardner-Denver Company
Address:
Dallas, TX
No. of patents:
40
Patents:












Patent Number Title Of Patent Date Issued
D251759 Trade exhibit structure and lighting therefor May 8, 1979
D246570 Hand-held tool for removing insulation from electrical conductors December 6, 1977
D246417 Hand-held tool for removing insulation from electrical conductors November 22, 1977
4147475 Control system for helical screw compressor April 3, 1979
A helical screw air compressor unit has a rotary capacity control valve, a compressor inlet throttling valve, and a pressure relief valve for venting the compressor discharge conduit. A control circuit senses pressure in the compressed air supply system downstream of the compressor and o
4128135 Drill pipe handling mechanism December 5, 1978
A drill pipe handling mechanism for a drilling rig includes spaced apart upper and lower arms mounted on a shaft which is mounted for pivotal and limited axial movement with respect to an axis which is spaced from and parallel to the drilling axis. The lower arm includes a receptacle for
4123203 Multistage helical screw compressor with liquid injection October 31, 1978
In a two-stage liquid injected helical screw gas compressor a bypass line with a check valve is provided between compressor stages for delivering compressed gas from the first stage directly to the compressed gas receiver and liquid reservoir. Bypass of gas to the reservoir at startup
4123188 Control system for peck drilling tool October 31, 1978
An automated and adjustable control system for conducting peck drilling operations wherein a drill bit is advanced stepwise in successively increasing penetrations, rapidly retracted after each penetration to remove cuttings, thereafter rapidly advanced toward a work face and then sl
4122731 Multispeed gear transmission with plural inputs to internal gear October 31, 1978
A multispeed gear transmission having an internal gear driving an output shaft. The internal gear is in constant mesh with a plurality of drive pinions. Each drive pinion is connected to a fluid actuated clutch. The driving members of the clutches are driven by respective gears in consta
4116093 Drive mechanism for power ratchet wrench September 26, 1978
The drive mechanism of a power ratchet wrench includes a rotary cam which engages a drive ball which in turn is engaged with a push rod for rotating the wrench socket. The push rod is formed with a spherical seat for engaging the drive ball and the cam includes an annular surface which i
4102583 Profile cutter July 25, 1978
A rotary cutting tool for forming fluted rotors and the like comprising a cylindrical body having a plurality of metallic carbide cutting blades which are detachably mounted on the circumference of the body. The blades are arranged along a helical line with respect to the axis of rotatio
4100982 Drill cuttings separation and control apparatus July 18, 1978
A drill cuttings and dust control hood formed as an inverted rectangular box having depending flexible skirts on three lateral sides and a swinging door formed on a fourth side of the box for drill cuttings removal. The dust control hood includes a conical drill cuttings deflector dispos
4099428 Cutting and insulation stripping apparatus for twisted wire pair July 11, 1978
Apparatus for cutting and insulation stripping of twisted conductor wire pairs comprises a wire feed mechanism for feeding predetermined lengths of twisted wire pairs into clamping mechanism including a rotatable clamp operable to untwist a predetermined portion of a wire pair. Movable c
4090688 Low pressure shutoff valve for fluid operated tool May 23, 1978
A low pressure shutoff valve adapted to be interposed in the fluid supply conduit of a fluid operated torque tool comprises a piston closure member having opposed differential pressure faces exposed to fluid supply pressure and a coil spring for biasing the piston toward a fluid shutoff
4088289 Mast support arrangement for portable drill rig May 9, 1978
A portable rock drill rig includes a pair of telescoping struts for supporting and positioning a mast or feed beam. The struts are connected at their upper ends to a support bracket which is connected to an elongated mast support member by a hydraulic cylinder to provide relative sli
4078618 Torque controller shutoff mechanism March 14, 1978
A torque tool having a rotation transmitting, torque sensing, energy absorbing, non-overriding mechanism interconnecting a motor and a rotatable driven head. The mechanism includes a driven member coupled to the head and a driver coupled to the motor with the driver yieldably biased
4078459 Long stroke turret control mechanism for automatic screw machine March 14, 1978
Mechanism for providing and controlling long stroke turret slide movement in an automatically operable screw machine. Means are provided to obtain a longer stroke of the turret slide than is normally possible in an automatically operable screw machine. Fluid operable means control the
4076338 Castering roller for a drill pipe guide bushing February 28, 1978
A drill pipe bushing for stabilizing the drill pipe at the mouth of the well during drilling includes a plurality of support arms supported in a circular array about the drill pipe. Rollers are attached to each support arm with the axis of the rollers normally parallel to the axis of the
4071125 Power transmission with torque converter lockup clutch January 31, 1978
A power transmission mechanism includes a hydrokinetic torque converter and a friction clutch disposed to form a positive mechanical drive from the input shaft to the output shaft of the torque converter. The friction clutch includes a piston disposed in the housing and forming opposed f
4069877 Mechanism for tensioning fluid hoses on a rock drill feed January 24, 1978
A tensioning mechanism for the fluid conductor hoses of a feed mounted rock drill comprises a plurality of fluid cylinders mounted stationary on a bracket supported midway along the length of the drill feed channel. Elongated tubular pistons are slidably supported in the cylinders and ar
4068980 Compressor startup control January 17, 1978
A positive displacement gas compressor includes an inlet throttling valve which has an actuator responsive to a pressure fluid signal for closing the throttling valve. A control circuit for supplying pressure fluid to close the throttling valve includes a time delay device and a pilot
4062431 Power transmission with modulating torque converter input clutch December 13, 1977
A power transmission mechanism includes a hydrokinetic torque converter driven by a hydraulically actuated modulating friction clutch having a piston disposed in and sealingly engaged with the converter housing to form opposed fluid chambers. Fluid in the torque converter housing flows
4062411 Hydraulic percussion tool with impact blow and frequency control December 13, 1977
A hydraulic percussion tool for developing repeated impact blows for rock drilling and other high force applications is characterized by a piston hammer reciprocably disposed in a cylinder bore and a tubular valve member coaxial with and actuated by the hammer for controlling the flow of
4054332 Actuation means for roller guide bushing for drill rig October 18, 1977
A drill pipe bushing for stabilizing a drill pipe at the mouth of the well during drilling which includes a frame surrounding the drill pipe axis and a plurality of support arms supported from the frame in a circular array about the drill pipe. The support arms are pivotable about an axi
4052135 Control system for helical screw compressor October 4, 1977
A helical screw air compressor unit has a rotary capacity control valve, a compressor inlet throttling valve, and a pressure relief valve for venting the compressor discharge conduit. A control circuit senses pressure in the compressed air supply system downstream of the compressor and o
4051875 Conductor wrapping bit October 4, 1977
A wrapping bit for insulated conductor wire includes a transverse end face having a shelf projecting from the surface of the end face adjacent the longitudinal wire receiving groove. An insulation slitting knife edge is formed on the shelf and extends along the surface of the shelf in a
4049064 Multi function drill drive system September 20, 1977
A drive system for a hoist-pulldown linkage of a blast hole drill employs a variable speed electric motor and a variable ratio coupling between the motor and the hoist-pulldown linkage. A first regulator actuates the electric motor for high torque operation when the ratio of the coupling
4043362 Cutting and insulation stripping apparatus for twisted wire pair August 23, 1977
Apparatus for cutting and insulation stripping of twisted conductor wire pairs comprises a wire feed mechanism for feeding predetermined lengths of twisted wire pairs into clamping mechanism including a rotatable clamp operable to untwist a predetermined portion of a wire pair. Movable c
4022550 Enclosed compressor unit May 10, 1977
A portable air compressor unit includes a sound attenuating enclosure formed to have a first compartment through which cooling air flows before passing through side-by-side mounted heat exchangers for engine coolant and compressor injection liquid. Engine and compressor inlet air filters
4016687 Angular adjustment for drill rig mast April 12, 1977
The mast of a portable earth drilling rig is mounted for pivotal movement between a horizontal transport position and selected drilling positions. A series of radially spaced apart lateral projections on each side of the lower end of the mast are provided with apertures for engaging late
4004434 Universal joint January 25, 1977
A low cost universal joint is disclosed, and the method for making the same, in which the smaller cross pin is transversely deformed in the region of intersection thereof with the main pin. In one embodiment, the transverse opening in the main pin is offset slightly from the center of
3999452 Tool for preparing tube ends for welding December 28, 1976
A tool for preparing tube ends for welding comprising a rotary tool head connected to the drive shaft of an air motor driven angle drive unit, said tool head having a plurality of radially extending arms provided with inclined cutting edges operative, upon rotation of the tool head and a
3995700 Hydraulic rock drill system December 7, 1976
In a hydraulic percussion rock drill the operation of the working fluid distributing valve is controlled to effect a variation in percussive blow energy and blow frequency by varying the piston hammer stroke. Actuation of the distributing valve is controlled by a remote controlled hy
3994350 Rotary drilling rig November 30, 1976
A rotary drill rig includes an elongated mast, a pulldown head disposed for linear traversal along the mast and connected to mechanism for effecting pulldown and hoisting movements on a drill string, and a rotary drive unit adapted to be connected to the pulldown head for unitary movemen
3980144 Rock drill feed mechanism September 14, 1976
A rock drill feed shell is slidably mounted on a support bracket and is connected to a feed screw which is threaded through a feed nut mounted on an elongated supporting tube disposed telescopically within the feed shell. The supporting tube is displaceable with respect to the support
3970151 Torque responsive motor shutoff for power tool July 20, 1976
A pneumatic power tool for tightening threaded fasteners includes a planetary gear unit in which the ring gear is rotatable against the bias of a torsion coil spring to actuate a motor shutoff control valve at a predetermined torque reaction exerted on the ring gear. The torsion spring
3961862 Compressor control system June 8, 1976
A positive displacement rotary compressor is in circuit with a closable chamber disposed upstream of the compressor gas inlet and including a conduit operable to be placed in communication with the compressor discharge conduit. A control circuit is operable to sense compressor discha
3960035 Torque responsive speed shifting mechanism for power tool June 1, 1976
A speed shifting mechanism for a pneumatic wrench or nutsetter comprises a planetary gear arrangement in the drive mechanism of the wrench in which the planet gear carrier is connected to the driver clutch member of a torque responsive clutch and the planetary ring gear is mounted in a o
3957092 Apparatus for forming twisted pairs of conductor wire May 18, 1976
Apparatus for forming twisted pairs of electrical conductor wire cut to predetermined lengths and having one wire end of a pair longitudinally offset from the adjacent end of the other wire of the pair. The apparatus includes plural wire preparation units which operate to cut predetermin
3948288 Hydraulic accumulator April 6, 1976
A flexible diaphragm for a hydraulic fluid accumulator is provided with a plurality of concentric circular ridges for engagement with the wall surface of the accumulator housing between concentric circular rows of fluid discharge openings formed in the housing. The ridges maintain the
3942742 Cable guide means for a cable drum March 9, 1976
A cable guide means comprised of spaced spools having spaced grooves thereon for guiding a cable to and from a cable driven drum so that spaced marginal lengths of the cable do not wear against one another as the cable changes directions in order to be rove about the drum.

 
 
  Recently Added Patents
System, apparatus and method for enabling/disabling display data channel access to enable/disable high-bandwidth digital content protection
Tree drain grate
Case
Resistive random access memory cell and resistive random access memory module
MOS transistor having combined-source structure with low power consumption and method for fabricating the same
Method for testing multi-chip stacked packages
Randomly accessible visual information recording medium and recording method, and reproducing device and reproducing method
  Randomly Featured Patents
Dental floss applicator
Micro-electro-mechanical systems (MEMS) device
Cable sheathing and burying method
Method for managing the operation of a remote information sensor, and associated sensor
Methods and investment instruments for performing tax-deferred real estate exchanges
Multiplexing of communications services on a virtual service path in an ATM network or the like
Selected essential amino acid supplementation of dietary proteins to lower urinary urea and peak glucose levels
Apparatus for transporting and holding objects
Magnetoresistive sensor having at least one layer with a pinned magnetization direction
Package for hanging or stand-up display