专利检索_ .起动用通风装置专利检索_ .起动用通风装置专利检索查询

序号	专利名	申请号	申请日	公开（公告）号	公开（公告）日	发明人
41	Hydraulic pump with air vent valve	US46378174	1974-04-24	US3901628A	1975-08-26	BORNHOLT SIEGFRIED; SCHMITT GEORG
A hydraulic vane pump wherein the intake opening of an air vent valve communicates with the chambers which sweep past the pump outlet and the discharge opening of the valve communicates with a channel which is provided in the pump housing for leak fluid. The valve member of the valve is held in open position by a weak spring during priming of the pump but yields and enables the valve member to seal the intake opening from the discharge opening in response to increasing fluid pressure at the outlet when the priming is completed. The body of the valve is insertable into a compartment of the housing at that axial end of the rotor which is remote from the outlet.
42	Anti-siphon and pump priming for sewage grinder pump	US39846973	1973-09-18	US3857517A	1974-12-31	GRACE R; VAN LUIK F
Sewage enters and fills a receiving tank to a predetermined maximum level before being pumped through a discharge passage by means of a grinder and pump, with a check valve being provided in the discharge passage to prevent back flow of sewage, in combination with a conduit connected to the discharge passage between the pump pressure side and the back flow preventing check valve. The conduit provides air through a differentially operable check valve to the discharge line for anti siphoning protection and will further provide reverse air flow from the pump into the tank to prime the pump as well as to prevent discharge of liquid sewage out of the conduit into the tank. The conduit opens above the maximum predetermined level that actuates the grinder-pump, and is well above the pump suction inlet and pump working chamber. There are no other outlets or inlets between the tank interior and the dishcarge line or pump chamber so that the unit can be sealed closed at the factory but may be easily primed upon installation and provides anti siphoning protection.
43	Compact pump/air separator apparatus	US3715863D	1971-03-26	US3715863A	1973-02-13	ZANONI P
A pump/air separator apparatus for use in dispensing gasoline includes an air separator of the cyclone type in which air and a low percentage of gasoline are removed from the pressurized gasoline by the air separator, with the air being vented to the atmosphere and the gasoline being returned to the suction side of the pump. Simultaneously pure gasoline is delivered from the air separator through an outlet valve to a meter and then to the nozzle dispenser, and any excess of such pure gasoline is bypassed back to the suction side of the pump.
44	Equipment for delivering liquid, particularly oil burners	US3635604D	1969-12-02	US3635604A	1972-01-18	PETERSEN JORGEN HARTVIG; HANSEN GUNNAR LYSHOJ
The invention relates to an oil pump unit for oil burners which includes a known assembly of a geared pump, a sump at a lower level, and a pressure regulator valve. Air vent means are provided which includes apparatus for feeding back to the pump pressurized liquid from the pressure regulator. The pump proper has novel passage means for receiving the fed back pressurized liquid to the pumping chambers to effect a venting of pressurized air from the chambers.
45	Fuel control valve	US3627450D	1970-09-18	US3627450A	1971-12-14	WARD HAROLD L
A single, multipurpose valve is located between a transfer pump and a fuel injection pump in an engine fuel system for performing multiple functions. The valve includes a valve body having a cylindrical internal bore and a valve sleeve reciprocable within the bore between four different positions. Lands, grooves, a port and an inner wall of the valve sleeve are positioned with respect to openings in the valve body to permit the valve to be operated as a priming mechanism to permit bleeding of the system when filling, to function as a bypass in controlling system pressure during operation and to provide a continuously controlled air bleed during engine operation. The multipurpose valve reduces the number of separate valves required for proper functioning of the fuel system and simplifies checkout in the event of malfunctions in the fuel system.
46	Oil-feed equipment operable as a single-line or double-line system	US3531220D	1968-08-15	US3531220A	1970-09-29	ENEMARK ARNE F

47	Gear pump	US3511581D	1968-05-22	US3511581A	1970-05-12	SINGELS LOUIS JOHAN

48	Air dumping control mechanism for self-priming pumps	US3474735D	1967-05-24	US3474735A	1969-10-28	GILMORE SAMUEL E

49	Fluid pumping and separating apparatus	US35105364	1964-03-11	US3242867A	1966-03-29	MOSBACHER BRUCE H

50	Apparatus for automatically performing chemical operations and similar or related operations	US3565460	1960-06-13	US3143393A	1964-08-04	HONS LUC DONALD DE SEGUIN DES

51	Air purging apparatus for pumps	US50905255	1955-05-17	US2931314A	1960-04-05	ERIKSON ROBERT W; RAY KIEFER WILLIAM

52	Self-priming nozzle for use with fluid dispensing equipment	US12297029	2007-03-12	US08056835B2	2011-11-15	Gary M. Helleson
A self-priming nozzle device (20) comprising a nozzle sleeve (9), a nozzle body (1) comprising a nozzle body aperture (16), a sleeve portion (15) and an attachment portion (14), wherein the sleeve portion (15) attached to said attachment portion (14), and the sleeve portion (15) of the nozzle body (1) fits in the nozzle sleeve (9), a nozzle stem (3) comprising a stopper (21), an O-ring (4), and a rod portion (23), wherein said stopper (21) attached to said rod portion (23), and said O-ring (4) is positioned around said rod portion (23) near about said stopper (21), and said nozzle stem (3) is placed inside said nozzle sleeve (9) and said nozzle body aperture (16), and said stopper (21) located within said nozzle sleeve (9), a spring loaded component (25) comprising a plurality of washers (2a, 2b), a compression spring (6) and a compression element (5), and said spring loaded component (25) positioned on said rod portion (23) of nozzle stem (3), and said compression element (5) is attached to said rod portion (23) of nozzle stem (3).
53	Aggregate for feeding fuel from supply tank to internal combustion engine of motor vehicle	US126074	1993-09-23	US5364246A	1994-11-15	Kurt Frank; Uwe Liskow; Jochen Thoenissen; Uwe Loistl; Oliver Wahl
An aggregate for feeding fuel from a supply tank to an internal combustion engine of a motor vehicle has a feeding pump having two end walls forming a pump chamber with a suction opening and a pressure opening and a feed element rotatable in the pump chamber so as to supply fuel from the suction opening to the pressure opening. At least one of the end walls is provided with a groove-shaped unloading passage in a region between an end surface of the feeding element and a sealing surface of the one end wall and communicating through a further opening the pump chamber with a low pressure region. The suction opening has an end facing in a rotary direction of the feeding element. The unloading passage is located near the end of the suction opening.
54	Aggregate for feeding fuel from supply tank to internal combustion engine of motor vehicle	US97069	1993-07-23	US5350285A	1994-09-27	Uwe Liskow; Jochen Thoennissen; Uwe Loistl; Oliver Wahl
An aggregate for feeding fuel from a supply tank to the internal combustion engine of a motor vehicle, has a pump chamber with a suction opening for receiving fuel and a pressure opening for supplying a fuel and a feeding element rotating in the pump chamber and feeding fuel from the suction opening to the pressure opening. At least one of the chamber end walls in a region of a sealing surface formed between an end surface of the feeding element and one of the chamber walls has an opening which leads to an unloading space, and the opening as considered in a rotary direction of the feeding element is located near one edge which limits the suction opening, and has a radial extension which is at least equal to a radial extension of the suction opening.
55	Supercharger vent	US10722	1993-01-29	US5281116A	1994-01-25	Darwin L. Gwin
An intake manifold (18) of an engine (10) includes a Roots-type supercharger (26) having rotors (28,29) driven by timing gears (72,74) disposed in a gear chamber (62) having a self contained oil supply and vent 98. The vent is formed in an input drive shaft (52) of the supercharger. The vent embodiments of FIGS. 2-4 include a radially extending passage opening into gear chamber (62) and effective to sling oil mist back into the gear chamber.
56	Pump for pumping fluid without vacuum boiling	US970384	1992-11-02	US5263818A	1993-11-23	Motoya Ito; Minoru Yasuda
A pump comprises an outer rotor and an inner rotor. A plurality of pressure chambers are defined between the outer rotor and the inner rotor to cause fluid to be sucked from a suction port and discharged to a discharge port by the movement of these pressure chambers with changing their volumes. A pressure relief passage is opened between the discharge port and the suction port and communicated directly with a fuel tank provided outside the pump. This causes the pressure in the pressure chamber to be reduced before the pressure chamber is communicated with the suction port. In consequence, it is possible to prevent the fuel of discharge pressure in the pressure chamber from being brought in the suction port, thereby preventing the generation of vapor caused due to vacuum boiling and the reduction of discharge rate.
57	Vane pump	US852714	1986-04-16	US4927332A	1990-05-22	Horst Fischer; Karl Staub
A hydraulic vane-type pump is provided having a venting valve which is located immediately at the pressure space of the pump, i.e., avoiding any additional passage means between the pressure space of the pump and the venting valve.
58	Fuel supply unit	US228043	1981-01-26	US4407642A	1983-10-04	Ulrich Kemmner
A fuel supply unit is proposed, in particular an assembly comprising a pumping element and an electromotor to drive it housed together in a common housing, which is secured in an upright position in the interior of a fuel container in such a manner that the pumping element is disposed near the bottom of the fuel container to enable aspiration of fuel from the fuel container until it is as nearly empty as possible. The pumping element has a first intake area oriented toward the bottom of the fuel container and a second intake area remote from the bottom of the fuel container, the second intake area being closable by a closure member movably disposed on the fuel supply unit whenever the fuel level in the fuel container drops below a predetermined level, so that fuel is then aspirated only via the first intake area. The closure member is actuatable by means of a floater body.
59	Liquid pump with gas separating means	US937537	1978-08-28	US4222751A	1980-09-16	Richard F. Shunta
A gasoline pump includes a cyclone air separator by which air is removed from the gasoline being pumped. The air is vented to the atmosphere through a vent chamber. The cyclone separator includes a scavenging tube for capturing the air bubbles and is coupled to an orifice between the separator and the vent chamber. The scavenging tube and orifice have diameters selected to capture substantially all of the air bubbles and a float valve couples the vent chamber to the pump inlet to return entrained gasoline to the pump. A damped output control valve regulates the internal pump pressure so the cone of air bubbles formed in the cyclone separator remains relatively constant and is efficiently captured by the scavenger tube.
60	Oil burner pump	US33161173	1973-02-12	US3850548A	1974-11-26	DELANCEY W
In a variable capacity pump with an inlet port and a discharge outlet adapted for connection to a nozzle, a cylinder within the pump body having a casing and a pump stator slidably mounted in the cylinder and receiving a vaned rotor for receiving fluid from said inlet and discharging to said outlet; the improvement which includes a delivery chamber receiving said pumped fluid with a cut off valve opening. Said opening includes a valve seat with a soft valve in one end of the movable stator normally engaging said seat. A spring retainer is normally spaced outwardly of one end of the stator and a weak air release spring is interposed between said retainer and said stator. A discharge pressure spring is interposed between the pump body and said retainer, normally holding the retainer during initial movement of the stator towards and into engagement with the retainer so that initial low pressure air delivered to said chamber lifts the soft valve from said seat for delivery to said nozzle. Solid liquid subsequently pumped to said chamber of progressively increasing pressure causes the stator to move further radially outward against the action of said discharge pressure spring further opening said valve to reach an equilibrium of volume of pumped liquid delivered to said nozzle. The improved pump includes opposed pairs of intake and outlet grooves upon opposite sides of the stator registerable with corresponding pairs of intake and discharge ports extending through the inner and outer walls of the pump cylinder together with opposed bosses upon opposite sides of said stator normally closing one of each pair of intake and discharge ports whereby, the stator is reversible face to face, depending upon the direction of rotation of the rotor. An improved drive shaft seal is incorporated into the pump body which includes a stationary seal element on the body and a rotative seal element engageable therewith and connected with said drive shaft.

1 2 3 4 5

该功能需要专业版企业版VIP权限，您可以：