Abstract: A valve having a membrane for controlling flow through the valve, the membrane having open and closed positions. An element urges the membrane to the closed position, and a vacuum pressure at one end of the valve may overcome the urging of the element, thereby moving the membrane to the open position. An actuator is provided for easing or initiating the movement of the membrane. In some embodiments, the valve may take the form of a valve assembly for use in a variety of applications, for example, a valve assembly for relieving a vacuum pressure wherein the assembly includes intake and exhaust ends, a membrane for controlling flow through the assembly, a spring providing a closing bias to the membrane that the vacuum pressure may overcome to move the membrane, and an actuator for initiating the movement of the membrane.

Abstract: A device for dispensing a viscous fluid product, including a pump having an inlet; an outlet; a cylinder; a piston in the cylinder; and a piston rod attached to the piston with its first end being exposed. The pump pumps viscous fluid product from a container to the outlet when the inlet is submerged in the viscous fluid product and the piston rod is axially moved relative to the cylinder. The device further includes a handle attached to the piston rod; a nozzle rotatably mounted on the handle around a rotation axis, in fluid communication with the outlet, and having a discharge orifice offset from the rotation axis; and a mechanism for rotating the nozzle around the rotation axis when the piston rod is axially moved relative the cylinder so that the discharge orifice moves in a circular pattern for dispensing the viscous liquid product in a substantially helical pattern.

Abstract: An apparatus for attachment to a bucket for holding a liquid is attached to a bucket with an upper rim. A bail is pivotally attached to the bucket as in a conventional arrangement, the bail having an upper position and a lower position. The apparatus has a housing with a pump operatively attached thereto, the pump having an inlet in liquid communication with the bucket and an outlet for facilitating the pumping of liquid from the bucket, preferably through a spray wand with a nozzle at the outlet thereof. A member is pivotally attached to the housing at one end thereof and has a notch in another portion thereof. This member has at least a first pivotal position and a second pivotal position. When housing is on the rim, the bail is in the upper position thereof and the member is in the first pivotal position thereof so that a portion of the bail is in the notch for thereby holding the housing to the upper rim of the bucket.

Abstract: An airless spray pump system and method for spraying a binder solution having suspended particles which are non-abrasive for coating a product therewith is described. A reservoir contains a supply of the binder solution and is continuously mixed to maintain the solution in a homogeneous state. An inlet check valve is connected to the reservoir and the check valve has an outlet port which is connected to a pump. The check valve is operated by an upstroke of a piston of the pump to draw a volume of a solution through the check valve and into the pump while the pump supplies, under high pressure, a solution in a transfer chamber thereof to a pressure control unit of a spray apparatus. When the piston of the pump is in a return stroke, it forces the check valve to close under pressure and simultaneously operates a transfer check valve of the pump to open to transfer solution into the transfer chamber and forces a portion of the solution to the pressure control unit.

Abstract: An electric power sprayer that includes a housing and a mounting arrangement. The housing is designed to at least partially contain a pump and a discharge nozzle opening. The mounting arrangement is designed to be secured to a container. The pump can be a battery powered pump. The mounting arrangement can be designed to engage an undersurface of a lip of a container opening. The mounting arrangement can be designed to connect to a standard paint container. The mounting arrangement can include a sealing arrangement that is designed to form a liquid seal between the container and the mounting arrangement.

Abstract: A coating material dispensing apparatus comprising a bell cup and a motor for rotating the bell cup about an axis of rotation of the bell cup. The motor is housed in a housing. A conduit is provided for feeding coating material to the interior of the bell cup as the bell cup is rotated by the motor. The coating material flows to an edge of the bell cup and is atomized therefrom in accordance with known principles. The housing includes an annular slot formed around the bell cup edge. Compressed air is coupled to the annular slot to generate and direct a first air stream at an exterior of the bell cup. At least one additional opening is formed in the housing radially outwardly from the annular slot. Compressed air is also coupled to the at least one additional opening to generate and direct a second air stream to combine with the first air stream to provide an air band.

Abstract: A portable haze sprayer having a multi-function that can spray powder chemicals or a fertilizer, spray chemicals in a high pressure, and widely spray chemicals is provided.

Abstract: A fluid misting apparatus and method that is adapted to be attached to a cycle having an energy source, the fluid misting apparatus includes a reservoir for containing a fluid and a centrifugal pump that is powered by the energy source, wherein the pump is in fluid communication with the reservoir, with the pump being operational to produce a fluid flow and fluid pressure from the fluid in the reservoir. Also included is a nozzle that is in fluid communication with the pump, the nozzle is operational to direct an atomized fluid mist adjacent to a cycle rider by utilizing the pump fluid flow and fluid pressure.

Abstract: The present invention relates to an apparatus and method for delivering or dispensing substances. The delivery apparatus comprises a housing, a cartridge for containing the fluid or liquid to be delivered, a conduit system, a nozzle, a pump and an actuating mechanism for actuating a stream of fluid or liquid. The delivery apparatus may include a motor and power source adapted to power the pump. The cartridge containing the fluid or liquid is typically an off-the-shelf container that may be purchased in stores, such as insecticides or household cleaners. The conduit system has an intake opening in fluid communication with the fluid inside the container and another portion in fluid communication with the intake of the nozzle. The conduit system further includes a structure for causing the stream of fluid or liquid to be generally laminar.

Abstract: A substance dispersing apparatus having a cartridge used to deliver substances for the cosmetic, medical, dental, automotive, construction, and other industries.

Abstract: A direct-current sprayer includes a shell with an outlet therein, a valve in the outlet, a pipe leading to the valve from a pump in the shell and a hose detachably connected to the valve so that water can flow from a pump in the shell into the hose through the valve. The valve automatically blocks the flow of the water after the hose is detached from the valve.

Abstract: The present invention is a dispenser adapted to be coupled to a fluid container. The dispenser comprises a dispensing head, an energy source, and a fluid pathway. The dispensing head includes a fluid pump, a motor adapted to power the pump, a trigger adapted to control the motor, and a nozzle orifice in fluid communication with a discharge end of the pump. The fluid pathway has one portion in fluid communication with an intake end of the pump and another portion inside the container.

Abstract: Apparatus for attracting wild game, such as deer, to a selected area is provided. A liquid attractant for the game is pumped from a reservoir through a nozzle for dispersal as a mist in or near the area. A battery-powered pump may be activated remotely.

Abstract: An improved apparatus for applying loose fill insulation generally includes an insulation feed portion and an insulation gun. The insulation feed portion is driven by a motor which is controlled by a clutch and a clutch control circuit. An insulation gun is mounted to a hose which communicates with the insulation feed portion. A switch mounted on the gun opens and closes the clutch control circuit. When the switch is closed, the clutch is engaged and air blown insulation is supplied to the gun. When the switch is open, the clutch is disengaged and air blown insulation is not supplied to the gun.

Abstract: The present invention is an improved vibratory pumping mechanism that increases the efficiency of utilization of the vibratory motion within a mechanism. More specifically, the mechanism includes a central chamber within which a piston is oscillated to draw fluid into the chamber and expel fluid from within the chamber outwardly through a nozzle connected to the chamber. The chamber includes a pressure tube connected to a rearward end of the chamber and to a secondary chamber positioned around and in fluid communication with the chamber. The pressure tube allows the negative pressure generated by the motion of the piston in either direction to be utilized in preventing any fluid from being directed out of the mechanism in a direction other than through the nozzle, thereby increasing the efficiency of the pump.

Abstract: What is disclosed is a self contained, cordless, handheld spray gun (100). The spray gun (100) comprises a fluid container (225) in intercommunication with at least one fluid nozzle orifice (201) and a source of pressurized gas (204) in intercommunication with at least one gas nozzle orifice 207 and one fan nozzle orifice (227). The spray gun (100) is actuated by pulling a trigger (231) that opens at least one valve (202) so that the fluid, such as paint, primer, stain, varnish, sealant or the like, can flow to a fluid chamber (206), atomized, and sprayed through a fluid nozzle orifice (201) out onto the article to be painted.

Abstract: A sprayer with a changeable volume includes a container, a pump, a first pipe, a second pipe and a nozzle. The container includes an upper wall and a lower wall. The upper wall can be compressed while not containing water and extensible for containing water. The lower wall is connected to the upper wall. The pump is put in a space defined in the lower wall. The first pipe is led to the pump from a space defined in the upper wall. The second pipe is led to the exterior of the container from the pump. The nozzle is connected to the second pipe.

Abstract: The present invention is a dispenser adapted to be coupled to a fluid container. The dispenser comprises a dispensing head, an energy source, and a fluid pathway. The dispensing head includes a fluid pump, a motor adapted to power the pump, a trigger adapted to control the motor, and a nozzle orifice in fluid communication with a discharge end of the pump. The fluid pathway has one portion in fluid communication with an intake end of the pump and another portion inside the container.

Abstract: An apparatus for the purpose of dispensing a chemical agent whose function is to detract or alternatively attract and destroy, insects, in particular, flying insects. The apparatus consists of a chemical source, a connection to a fluid source, usually water, a reservoir for chemical mixing and a pump for mixing and creating pressure. Mixing reservoir is of such size to eliminate any chance of chemical mixture separation and where the chemical mixture is agitated prior to each dispensing cycle. Fluid is disbursed under pressure through a series of atomizing devices, interconnected to the apparatus through a flexible plastic delivery conduit. The Apparatus functions are controlled through the use of an electronic interface. Preferred agent used is pyrethrum based, naturally occurring or synthesized, which possesses an antagonistic effect toward targeted pests but apparatus is designed to be adaptable to a wide range chemicals.

Abstract: A power operated pressure washer having a high pressure liquid supply hose with an inlet fitting formed with an axial stem having a central liquid passageway that can be connected to a pressure washer outlet fitting by a threaded retaining ring. As a feature of this invention, the retaining ring can be unscrewed from the pressure washer outlet for permitting the dissipation and venting of high pressure buildup within the hose while the retaining ring safely retains the hose fitting on the outlet. In one embodiment, the stem has a pair of axially spaced annular sealing members adaptable for sealing engagement with relatively smaller and larger size pressure washer outlets and the stems is formed with a transverse passageway for venting liquid from the central stem passageway around one of the sealing members, as an incident to unscrewing of the retaining ring, while the other sealing member remains in sealed engagement with the pressure washer outlet fitting.

Abstract: An automatic mist-sprayer system comprising a control unit having electronic circuitry adapted to activate the sprayer for a predetermined interval in response to a sensed ambient light condition of desired intensity and duration. The system desirably further includes an electrical power supply and a plurality of spaced-apart sprayer heads. A preferred utility for the system of the invention is spraying dilute solutions of insecticide or insect repellent during the periods of significant insect activity that typically occur around dusk and dawn. Manual overrides and a remote receiving unit are also disclosed for use of the system at times other than dusk and dawn.

Abstract: A sprayer includes a container and a battery. The container contains water. The container includes two tracks formed thereon and two elastic contacts installed thereon. The battery includes two contacts formed thereon and two flanges for engagement with the tracks so that the battery is attached to the container and that the contacts of the battery contact the elastic contacts of the container.

Abstract: An automatic spray gun includes a cylinder for disposing a motor and a turbine therein and sealed by a sealing cap and an outer cap, a sleeve perpendicularly integrated with lower periphery of the cylinder, a container cap integrated with an under side of the sleeve for covering a paint container, a Y-shaped pressing means suspended from an axial rod on a top of the sleeve, a nozzle with a group of fittings engaged in the sleeve, a fist half handle integrated to the bottom of the cylinder and combined with a second half handle by screws, a tube, a hair switch and a number of electric wires disposed in the handle for connection of electric power to the motor through the switch which controls the rotation of the motor.

Abstract: The apparatus for supplying a spraying machine with small quantities of liquid product to be sprayed, in particular for processing small batches of articles (M), presents a spray unit (Z) designed in any way so as to support, removably and preferably in an overturned position, at least one container (C1) made of any suitable rigid or deformable pressure-resistant material, with a small capacity, for example able to contain from one to two litres of paint or other product to be sprayed. The spray unit (Z) is provided with quick-release and/or removable connections (3, 103) and a short pipe (4) for connecting the discharge mouth of said container to the spray guns (Z1) and there being envisaged a pressurization pipe (101, 102) which supplies the pressurized fluid and means are envisaged for pressurizing with this pipe the paint situated inside said container (C1), so that said paint is forced out and is supplied with the desired pressure to said spray guns (Z1).

Abstract: A three part housing for a battery powered spray head includes a left half shell, a right half shell and a hinged top. The batteries are located in the upper portion of the housing below the hinged top (battery cover). The inner front of the top is provided with a downward depending latch member and a spring biased latch member is provided inside the housing. The spring biased latch member is actuated by inserting a pin (or stylus) through a hole in one of the half shells. This prevents accidental opening of the battery cover.

Abstract: The present invention is a dispenser adapted to be coupled to a fluid container. The dispenser comprises a dispensing head, an energy source, and a fluid pathway. The dispensing head includes a fluid pump, a motor adapted to power the pump, a trigger adapted to control the motor, and a nozzle orifice in fluid communication with a discharge end of the pump. The fluid pathway has one portion in fluid communication with an intake end of the pump and another portion inside the container.

Abstract: A sprayer with a changeable volume includes a container, a pump, a first pipe, a second pipe and a nozzle. The container includes an upper wall and a lower wall. The upper wall can be compressed while not containing water and extensible for containing water. The lower wall is connected to the upper wall. The pump is positioned in a space defined in the lower wall. The first pipe is directed to the pump from a space defined in the upper wall. The second pipe is directed to the exterior of the container from the pump. The nozzle is connected to the second pipe.

Abstract: A portable misting system having a pump that is at least partially submersed in a fluid. The partial submersion of the pump enables the pump to move fluid through a supply hose to a plurality of misting nozzles. In one embodiment, the misting system includes a receptacle configured to receive and store a fluid. The pump is coupled to the receptacle so as to be at least partially submersed in the fluid contained therein. In another embodiment, the misting system includes a receptacle in fluid communication with a pump chamber. The pump is partially disposed within the pump chamber so as to be at least partially submersed in the fluid contained in the pump chamber.

Abstract: A pump apparatus for a liquid sprayer is provided having a housing adapted to be releasably connected to a vessel containing liquid to be sprayed. The housing includes an upper portion and a lower portion releasably connected to the upper portion. The upper portion includes at least a pump and an electric motor for driving the pump. The lower portion includes at least a power supply for providing power to the motor.

Abstract: A portable pressure washer having a pump mechanism that is supported by a plurality of wheels. The pump mechanism has a rearwardly extending inlet connection and a forwardly extending outlet connection.

Abstract: A DC power spraying tool includes a housing having an inlet opening, a discharging opening, and a motor cavity, a liquid container for containing a liquid colorant therein communicatively connected to the inlet opening of the housing, a spray nozzle extended from the discharging opening of the housing to communicate with the liquid container, and an electric motor supported within the motor cavity of the housing for applying a vacuum pressure on the liquid container to pump the colorant towards the spray nozzle. A DC power source includes a rechargeable battery supported by the housing for applying a DC current and a control circuitry electrically connected the rechargeable battery with the electric motor for transforming the DC current to an impulse current so as to drive the electric motor to operate.

Abstract: A system and method for injecting a low-pressure spray of solution into a high-pressure spray of liquid produced by a pressure washing system. The system comprises a liquid storage tank for the solution that is operable to be pressurized. The system comprises a wand that is coupled to the liquid storage tank and securable to a high-pressure wand. The system may comprise a high-pressure pump that is operable to produce a high-pressure flow of fluid to the high-pressure wand. The pressure stored in the liquid storage tank provides the force to drive the solution to the discharge of the high-pressure wand.

Abstract: A manually operated sprayer for a container of liquid to be sprayed includes variable volume pump means having liquid inlet and outlet means for discharging the contents of the container. The sprayer further includes a control module having product and vent valves reciprocably disposed therein, the product and vent valves being simultaneously reciprocable by means of the manual actuator between valve open and valve closed positions. In the valve open position, the product and vent valves respectively prevent flow of product and air respectively into the liquid inlet means and into a vent passage in communication between atmosphere and an interior of the container, and in the vent closed position, the product and vent valves respectively enable flow of product and air respectively into the liquid inlet means and into the vent passage.

Abstract: A lightweight portable battery powered pump for moving fluids from a reservoir to a variety of end applications is disclosed. A simple and easy to manufacture centrifugal pump impeller and housing are shown.

Abstract: A sprayer with a changeable volume includes a container, a pump, a first pipe, a second pipe and a nozzle. The container includes an upper wall and a lower wall. The upper wall can be compressed while not containing water and extensible for containing water. The lower wall is connected to the upper wall. The pump is put in a space defined in the lower wall. The first pipe is led to the pump from a space defined in the upper wall. The second pipe is led to the exterior of the container from the pump. The nozzle is connected to the second pipe.

Abstract: A texture sprayer is provided with a hopper feeding an air operated double diaphragm pump. The sprayer is provided with a removable power pack which includes a gas engine, an air pump, an air unloading regulator, an air cooler, an air QD and a mounting base with handles. The power pack may be removed from the sprayer cart and located outside so that the sprayer can be used quietly and safely indoors.

Abstract: The present invention is a dispenser adapted to couple to a fluid container having an opening surrounded by a neck. The dispenser comprises a cap, a dispensing head, an energy source, and a conduit. The cap is adapted to seal the opening fluid tight when the dispenser is coupled to the container. The dispensing head is pivotably secured to the cap and includes a fluid pump, a motor adapted to power the pump, a trigger adapted to actuate the motor, and a nozzle orifice in fluid communication with a discharge end of the pump. The energy source is electrically connected to the motor and extends inside the container. The conduit has a first end in fluid communication with an intake end of the pump and a second end inside the container.

Abstract: A mosquito misting system is described having a liquid reservoir that is operably associated with a fluid pump and motor and fluid conduits to transmit a fluid insecticide to one or more dispersal nozzles. A controller is used to control the frequency and duration of dispersal. An agitator device is preferably associated with the fluid reservoir to adequately agitate the insecticide mixture within the reservoir during or just prior to dispersal of the fluid insecticide. The controller is interconnected with a level sensor assembly to provide a graphic indication of the level of fluid insecticide remaining in the reservoir. Additionally, the misting system is provided with a fluid pressure switch that detects a rupture in the fluid conduit and prevents further flow of fluid from the reservoir. In further aspects, the system is provided with remote control and, optionally, a remote monitoring feature that allows improved service and maintenance for the system.

Abstract: A paint sprayer for spraying a fluid comprises a housing that houses a motor, a pump, and a fluid passage. A handle is coupled to the housing and a paint cup is coupled to the handle for storage of a fluid. The handle is positioned between the housing and the paint cup. The paint sprayer has a center of gravity region. A longitudinal axis of the handle and a longitudinal axis of the paint cup are aligned with the center of gravity region of the paint sprayer. A gripping zone of the paint sprayer is also aligned with the center of gravity region.

Abstract: A hand-held battery power sprayer is formed of a body having a spray nozzle, a trigger, and an internally threaded attachment collar having a passageway therethrough. The attachment collar removably receives a container. As battery powered pump is positioned within the body, the pump having an inlet and an outlet, the outlet being connected by a discharge tube to the spray nozzle and the inlet connected by a suction tube extending through the inlet collar passageway into the interior of a liquid-holding container when the container affixed to the attachment collar. A battery is contained within the body. A switch within the body is actuated by this trigger. Circuitry connects the battery, switch, and pump in series. A passive check valve member normally closes the passageway preventing fluid flow from the container into the body and is displaceable to permit air flow into the container.

Abstract: The present invention relates to a portable device for spraying a liquid at low pressure, said device comprising a spray arm (220), and characterized in that the spray arm comprises at least one flat fan spray nozzle (230). Preferably, the liquid is a cleaning composition for treatment of carpets and other large fabric coverings, more preferably, a composition comprising surfactants. Also preferably, the portable device is electrically driven, and/or the spray arm is extendible and/or detachable from the device's main unit.

Abstract: A method of periodically spraying live plants and/or animals, using a portable electric sprayer, is described and claimed. In the preferred embodiments, the portable electric sprayer includes: (i) a fluid reservoir; (ii) a nozzle for producing a spray of fluid; (iii) a conduit between the fluid reservoir and the nozzle; (iv) an electric pump coupled so as to pump fluid from the reservoir, through the conduit and out of nozzle; and (v) a control panel. In addition, a control circuit in the portable electric sprayer accepts the user settings from the control panel, and activates and deactivates the electric pump when indicated by the user settings. The nozzle is directed so as to provide the sprays toward at least one of: a terrarium, a bird cage, an aviary, a garden or a potted plant, and the portable electric sprayer is allowed to cycle through a plurality of the sprays while unattended.

Abstract: An airbrush as used for a media delivery system comprises an air pressurizer, a power source and a media reservoir integrated into a single hand held device. The air pressurizer comprises a pump and motor assembly delivering pressurized air by way of first and second air conduits to a nozzle. The media is stored in a detachable reservoir housed within the device and provided with a liquid conduit for conducting the media to the nozzle. Upon actuation of a spray button, the pump and motor assembly causes a stream of air to flow through the first and second air conduits and past an opening in the media conduit. Thus, a negative pressure is induced into the media conduit. The negative pressure draws liquid from the reservoir through the media conduit where it is entrained within the air stream as minute droplets and exits the body of the airbrush through a nozzle.

Abstract: A liquid sprayer is provided. This liquid sprayer comprises a bottle having an opening and a sprayer housing attached to the bottle. This sprayer housing includes an electric motor, a voltage source for powering the electric motor, a pump driven by the motor, a switch for completing an electrical circuit, a nozzle mechanism attached to the sprayer housing for spraying a liquid. The liquid sprayer also comprises a venting mechanism. This venting mechanism comprises a vent housing having an inner surface and an outer surface, and a translating piston disposed in the vent housing.

Abstract: The invention relates to portable dispensing means having a spray head (1) and a spray material storage canister (2), the spray head (1) and the canister being attachable to one another and also being subsequently detachable from one another, the dispensing means being formed such that when it is in use it can be sert so that spray material within the canister can move into the spray head and pass from the spray head to an atmosphere outside of the dispensing means in the form of a spray, the dispensing means being formed such that when it is in a normal in-use orientation and is activated the spray can proceed from the spray head in a substantially vertical or upward path of travel.

Abstract: This invention relates to equipment and a method for providing superior power washing at relatively low pressures. The equipment uses a unique mixing chamber wherein a pressurized water stream is mixed with a pressurized additive stream. For example, the additive stream enters the mixing chamber at a pressure at least that of the carrier, or water, stream. There is no need to operate the carrier liquid stream at substantially higher pressures than the desired delivery pressure.

Abstract: A portable pressure washer having a pump mechanism that is supported by a plurality of wheels. The pump mechanism has a rearwardly extending inlet connection and a forwardly extending outlet connection.

Abstract: An electrostatic spraying device being configured and disposed to electrostatically charge and dispense a liquid composition from a supply to a point of dispersal, wherein the device comprises: a reservoir configured to contain the supply of liquid composition; a nozzle to disperse the liquid composition, the nozzle being disposed at the point of dispersal; a channel disposed between the reservoir and the nozzle, wherein the channel permits the electrostatic charging of the liquid composition upon the liquid composition moving within the channel; a high voltage power supply electrically connected to the power source; and a high voltage electrode electrically connected to the high voltage power supply, wherein a portion of the high voltage electrode is disposed between the reservoir and the nozzle, and wherein the high voltage electrode electrostatically charges the liquid composition within the channel at a charging location, wherein the nozzle pathway comprises an outlet path disposed adjacent to the nozzle

Abstract: A boat or recreational vehicle (RV) mounted pressure washing system fully plumbed and integrated electrically with the boat or RV, and located remotely therewithin according to user's preferred mounting location such as the bilge, engine compartment or a supply cabinet. The system provides the user with a high pressure supply of water for washing, rinsing, etc. by means of a pump, water reservoir and fully retractably high pressure hose, to which a nozzle of choice may be quickly attached or removed when not in use. The pressure hose is of significant length to provide for the pressure washing of the entire vehicle and surrounding areas by the user, whereby when not in use is fully retractable into the boat or RV for storage.

Abstract: A device for preventing the rotation of a power drill attachment relative to a power drill is provided and is described in combination with a liquid sprayer. The device having a container (10) with a supply tube (12) extending downward into the container (10) and upward into a pump inlet (14) which is open to a pump (16.) The pump (16) has on the rearward side a pump seal (18) and a pump drive (20) and on the forward side a pump outlet (22) and nozzle (24). The pump has a rod (26) affixed to it by means of a rod attachment (28). The rod (26) extends rearward and includes an ergonomic rod pillow (30). Also included is a power drill (36) including a power drill trigger (32) and a power drill chuck (34). When energized the power drill (36) imparts rotational energy to the pump (16). Rotation of the pump (16) relative to the power drill (36) is prevented by the communication of the rod (26) the rod attachment (28) and the housing of the power drill (36).