Pressure adjusting device for engine cooling system

Information

  • Patent Grant
  • 6345958
  • Patent Number
    6,345,958
  • Date Filed
    Friday, May 11, 2001
    23 years ago
  • Date Issued
    Tuesday, February 12, 2002
    22 years ago
  • Inventors
  • Examiners
    • Freay; Charles G.
    • Solak; Timothy P.
    Agents
    • Kamrath; Alan
    • Rider, Bennett, Egan & Arundel, LLP
Abstract
A pressure adjusting device has a pumping device, a connector device, and a connection pipe connected to the pumping device and the connector device. The pumping device has a hollow cylinder, a plunger device inserted through the hollow cylinder, a cover covering the hollow cylinder, a check valve and a non-return valve inserted in the cover, and an inhale joint and an exhale joint connected to the cover. The connector device has a stepped post, a threaded rod inserted through the stepped post, a handle bar disposed on the stepped post, and a button disposed on the handle bar and receiving the threaded rod. The threaded rod has a head portion inserted in the connection pipe.
Description




BACKGROUND OF THE INVENTION




The present invention relates to a pressure adjusting device for engine cooling system. More particularly, the present invention relates to an air inflation and extraction device for a radiator of a vehicle.




A conventional air inflation device and a conventional air extraction device cannot be combined together. Therefore, the user should use two devices to inflate air into a radiator and to extract air from the radiator.




U.S. Pat. No. 5,557,966 has disclosed a cooling system pressure testing device which has a bladder and a plump. However, the pump can inflate air only.




U.S. Pat. No. 662,980 has disclosed a pumping device which has two spherical balls disposed in two valve devices. A connecting tube separates the valve devices. The purpose of U.S. Pat. No. 662,980 is to provide a simple device to pump liquid. Therefore, the pumping device cannot be used to pump air or gas.




U.S. Pat. No. 5,664,626 has disclosed a mechanical plug device which is used to extract fluid samples from a well. An interior of the well does not expose to an outside atmosphere.




SUMMARY OF THE INVENTION




An object of the present invention is to provide a pressure adjusting device which has a stepped post to be inserted in various inlets of different radiators while the radiators have different sizes.




Another object of the present invention is to provide a pressure adjusting device which can inflate air into a radiator and to extract air from the radiator.




Another object of the present invention is to provide a pressure adjusting device which can combine an air inflation tool and an air extraction tool together.




Accordingly, a pressure adjusting device comprises a pumping device, a connector device, and a connection pipe connected to the pumping device and the connector device. The pumping device has a hollow cylinder, a plunger device inserted through the hollow cylinder, a cover, a check valve, a non-return valve, an inhale joint, an inhale pressure meter, an exhale joint, and an exhale pressure meter. The hollow cylinder has an inner interior, a through hole, a vent aperture, and a distal thread. The plunger device has a drive rod, a disk disposed on a first end of the drive rod, a piston disposed on a second end of the drive rod, and an O-ring surrounding the piston. The piston is inserted in the inner interior of the hollow cylinder. The drive rod is inserted through the through hole. The cover has an inner thread engaging with the distal thread of the hollow cylinder, a round aperture receiving the check valve and a circular aperture receiving the non-return valve. A lower end of the inhale joint is inserted in the round aperture. A bolt fastens the cover and the inhale joint together. The inhale joint has an inhale head. A lower end of the exhale joint is inserted in the circular aperture. A screw fastens the cover and the exhale joint together. The exhale joint has an exhale head. The inhale joint is connected to the inhale pressure meter. The exhale joint is connected to the exhale pressure meter. The connector device has a stepped post having a through aperture, a threaded rod inserted through the through aperture, a collar enclosing a lower end of the stepped post, a handle bar disposed on the stepped post, and a hollow button disposed on the handle bar. The threaded rod has a head portion, a bottom flange, a threaded portion, and a vent hole. A washer encloses the bottom flange. The handle bar has a flat plate and two bevel plates connected to the flat plate. The flat plate has a center hole. An annular insertion block is inserted in the hollow button. The annular insertion block has a threaded interior receiving the threaded portion of the threaded rod. The threaded rod passes through the center hole of the flat plate and the hollow button. The head portion of the threaded rod is inserted in an end of the connection pipe. The check valve has a first funnel-shaped hole and a first bulletheaded ball inserted in the first funnel-shaped hole. The non-return valve has a second funnel-shaped hole and a second bulletheaded ball inserted in the second funnel-shaped hole.











BRIEF DESCRIPTION OF THE DRAWINGS





FIG. 1

is a schematic view illustrating a pressure adjusting device of a preferred embodiment inflating air into a radiator;





FIG. 2

is a perspective exploded view of a pumping device of a preferred embodiment in accordance with the present invention;





FIG. 3

is a sectional assembly view of a pumping device of a preferred embodiment in accordance with the present invention;





FIG. 4

is a perspective assembly view of a pumping device of a preferred embodiment in accordance with the present invention;





FIG. 5

is a schematic view illustrating an operation of a pumping device of a preferred embodiment in accordance with the present invention;





FIG. 6

is a perspective assembly view of a connector device of a preferred embodiment in accordance with the present invention;





FIG. 7

is a perspective exploded view of a connector device of a preferred embodiment in accordance with the present invention;





FIG. 8

is a schematic view illustrating a connector device of a preferred embodiment inserted in an inlet of a radiator;





FIG. 9

is a schematic view illustrating a pressure adjusting device of a preferred embodiment extracting oil;





FIG. 10

is a schematic view illustrating a pressure adjusting device of a preferred embodiment extracting air;





FIG. 11

is a perspective exploded view of a check valve of a preferred embodiment in accordance with the present invention;





FIG. 12

is a perspective exploded view of a non-return valve of a preferred embodiment in accordance with the present invention;





FIG. 13

is a sectional schematic view illustrating locations of a check valve and a non-return valve in a pressure adjusting device of a preferred embodiment;





FIG. 14

is a sectional schematic view illustrating air flows into a check valve; and





FIG. 15

is a sectional schematic view illustrating air flows into a non-return valve.











DETAILED DESCRIPTION OF THE INVENTION




Referring to

FIGS. 1

to


8


, a pressure adjusting device comprises a pumping device


1


, a connector device


2


, and a connection pipe


3


connected to the pumping device


1


and the connector device


2


.




The pumping device


1


has a hollow cylinder


11


, a plunger device


12


inserted through the hollow cylinder


11


, a cover


13


, a check valve


133


, a non-return valve


134


, an inhale joint


14


, an inhale pressure meter


141


, an exhale joint


15


, and an exhale pressure meter


151


.




The hollow cylinder


11


has an inner interior


111


, a through hole


112


, a vent aperture


113


, and a distal thread


114


.




The plunger device


12


has a drive rod


121


, a disk


123


disposed on a first end of the drive rod


121


, a piston


122


disposed on a second end of the drive rod


121


, and an O-ring


124


surrounding the piston


122


.




The piston


122


is inserted in the inner interior


111


of the hollow cylinder


11


. The drive rod


121


is inserted through the through hole


112


.




The cover


13


has an inner thread


130


engaging with the distal thread


114


of the hollow cylinder


11


, a round aperture


131


receiving the check valve


133


and a circular aperture


132


receiving the non-return valve


134


. The check valve


133


and the non-return valve


134


are located in two opposite directions.




A lower end of the inhale joint


14


is inserted in the round aperture


131


. A bolt


135


fastens the cover


13


and the inhale joint


14


together. The inhale joint


14


has an inhale head


142


.




A lower end of the exhale joint


15


is inserted in the circular aperture


132


. The exhale joint


15


has an exhale head


152


.




The inhale joint


14


is connected to the inhale pressure meter


141


. The exhale joint


15


is connected to the exhale pressure meter


151


.




The connector device


2


has a stepped post


21


having a through aperture


211


, a threaded rod


22


inserted through the through aperture


211


, a collar


212


enclosing a lower end of the stepped post


21


, a handle bar


23


disposed on the stepped post


21


, and a hollow button


24


disposed on the handle bar


23


. The stepped post


21


tapers downward.




The threaded rod


22


has a head portion


222


, a bottom flange


224


, a threaded portion


223


, and a vent hole


221


. A washer


225


encloses the bottom flange


224


.




The handle bar


23


has a flat plate


231


and two bevel plates


232


connected to the flat plate


231


. The flat plate


231


has a center hole


233


.




An annular insertion block


241


is inserted in the hollow button


24


. The annular insertion block


241


has a threaded interior


242


receiving the threaded portion


223


of the threaded rod


22


.




The threaded rod


22


passes through the center hole


233


of the flat plate


231


and the hollow button


24


.




The head portion


222


of the threaded rod


22


is inserted in an end of the connection pipe


3


.




The connector device


2


is inserted in an inlet


41


of a radiator


4


. The stepped post


21


can be inserted in various inlets


41


of different radiators


4


while the radiators


4


have different sizes.




Referring to

FIGS. 11

,


13


and


14


, the check valve


133


has a first funnel-shaped hole


1331


and a first bulletheaded ball


1332


inserted in the first funnel-shaped hole


1331


. When air flows from the inhale joint


14


into the check valve


133


, the air passes through a gap between the first funnel-shaped hole


1331


and the first bulletheaded ball


1332


to enter the inner interior


111


of the hollow cylinder


11


. The check valve


133


is a one-way valve.




Referring to

FIGS. 12

,


13


and


15


, the non-return valve


134


has a second funnel-shaped hole


1341


and a second bulletheaded ball


1342


inserted in the second funnel-shaped hole


1341


. When air flows from the inner interior


111


of the hollow cylinder


11


into the non-return valve


134


, the air passes through a gap between the second funnel-shaped hole


1341


and the second bulletheaded ball


1342


to enter the exhale joint


15


. The non-return valve


134


is a one-way valve.




When the exhale head


152


is inserted in the connection pipe


3


, the user can pull the disk


123


. Then the check valve


133


is opened and the non-return valve


134


is closed.




When the user pushes the disk


123


, the non-return valve


134


is opened and the check valve


133


is closed. Then air will enter the radiator


4


.




Referring to

FIG. 9

, a first connection tube


3


A is connected to a sealed cup


5


and a container. The connection pipe


3


is connected to the sealed cup


5


and the inhale head


142


. When the user pulls the disk


123


, the liquid or oil in the container will flow into the sealed cup


5


.




Referring to

FIG. 10

, a second connection tube


3


B is connected to the inhale head


142


and a container (not shown in the figure). When the user pulls the disk


123


and pushes the disk


123


continuously, the air in the container will be extracted until the container is in vacuum.




The present invention has the following advantages. The stepped post can be inserted in various inlets of different radiators while the radiators have different sizes. The stepped post can seal the inlet of the radiator. Furthermore, the present invention provides a pressure adjusting device which can combine an air inflation tool and an air extraction tool together.




The present invention is not limited to the above embodiment but various modification thereof may be made. Furthermore, various changes in form and detail may be made without departing from the scope of the present invention.



Claims
  • 1. A pressure adjusting device for engine cooling system comprises:a pumping device, a connector device, and a connection pipe connected to the pumping device and the connector device, the pumping device having a hollow cylinder, a plunger device inserted through the hollow cylinder, a cover, a check valve, a non-return valve, an inhale joint, an inhale pressure meter, an exhale joint, and an exhale pressure meter, the hollow cylinder having an inner interior, a through hole, a vent aperture, and a distal thread, the plunger device having a drive rod, a disk disposed on a first end of the drive rod, a piston disposed on a second end of the drive rod, and an O-ring surrounding the piston, the piston inserted in the inner interior of the hollow cylinder, the drive rod inserted through the through hole, the cover having an inner thread engaging with the distal thread of the hollow cylinder, a round aperture receiving the check valve and a circular aperture receiving the non-return valve, a lower end of the inhale joint inserted in the round aperture, a bolt fastening the cover and the inhale joint together, the inhale joint having an inhale head, a lower end of the exhale joint inserted in the circular aperture, the exhale joint having an exhale head, the inhale joint connected to the inhale pressure meter, the exhale joint connected to the exhale pressure meter, the connector device having a stepped post having a through aperture, a threaded rod inserted through the through aperture, a collar enclosing a lower end of the stepped post, a handle bar disposed on the stepped post, and a hollow button disposed on the handle bar, the threaded rod having a head portion, a bottom flange, a threaded portion, and a vent hole, a washer enclosing the bottom flange, the handle bar having a flat plate and two bevel plates connected to the flat plate, the flat plate having a center hole, an annular insertion block inserted in the hollow button, the annular insertion block having a threaded interior receiving the threaded portion of the threaded rod, the threaded rod passing through the center hole of the flat plate and the hollow button, the head portion of the threaded rod inserted in an end of the connection pipe, the check valve having a first funnel-shaped hole and a first bulletheaded ball inserted in the first funnel-shaped hole, and the non-return valve having a second funnel-shaped hole and a second bulletheaded ball inserted in the second funnel-shaped hole.
  • 2. The pressure adjusting device for engine cooling system as claimed in claim 1, wherein the stepped post tapers downward.
Parent Case Info

The present invention is a continuation-in-part of application Ser. No. 09/371,878, filed on Aug. 8, 1999, now abandoned.

US Referenced Citations (8)
Number Name Date Kind
3014361 Black Dec 1961 A
3035436 Johnson May 1962 A
3115031 Harry Dec 1963 A
3313144 Johnson Apr 1967 A
3852996 Klaubert et al. Dec 1974 A
4235100 Branchini Nov 1980 A
5518047 Alexandrowski May 1996 A
5557966 Corry Sep 1996 A
Continuation in Parts (1)
Number Date Country
Parent 09/371878 Aug 1999 US
Child 09/854896 US