This application is based on U.S. Patent Provisional Application Ser. No. 61/473,788 as originally filed on Apr. 10, 2011, and is also filed as a continuation in part of U.S. patent application Ser. No. 13/021,727 filed Feb. 5, 2011; both applications being incorporated herein by reference, and having the same inventor as this application.
This invention relates to a valve core gripper device, and more particularly, to be valve core gripper device for removing a valve core from a tire valve or a refrigeration valve, or inserting a valve core into a tire valve or a refrigeration valve.
A valve core, also known as a Schrader valve insert, is commonly used to provide access to an item, a device or an apparatus containing gas under pressure. Most commonly, tires on a vehicle have a valve stem with a valve core therein. The valve core provides access for a gas to be put into or removed from a tire. In a refrigeration system, the valve core provides access to the refrigerant for the system for removal or insertion purposes relative to the refrigerant.
Commonly, a valve core can get stuck in either the tire valve or the refrigerant system. This sticking problem with the valve core interferes with maintenance of the tire or a refrigeration system. It is very desirable to be able to remove or insert the valve core without damaging the tire or the refrigeration system. Such a removal is difficult with the tools of the prior art.
With regard to refrigerant system, a typical valve core is a Schrader-type valve core. Any refrigerant system is a closed system to contain the refrigerant gas and provide the necessary cooling. The valve, together with the valve core, provides access to the refrigerant in the system. Through this valve, refrigerant may be added or removed from the system as desired. Great problems occur when the valve core requires replacement. Various problems can occur with the removal of the valve core, especially when it is highly desired not to damage the surrounding area of the valve core.
Various problems can lead to the valve core being stuck in the refrigerant system. Special tools are required to remove that valve core from refrigerant system in order to repair or service that system. Thus, the valve core can and does cause problems, if it becomes stuck in the system. Accordingly, a tool to remove that valve core without damaging the surrounding area can provide a great advantage.
Among the many objectives of the present invention is the provision of a valve core gripper device capable of gripping a valve core, in order to insert or remove the valve core from a housing, from a tire or a refrigerant system, without damaging the housing.
Another objective of the present invention is the provision of a valve core gripper device capable of serving a refrigerant system.
Yet another objective of the present invention is the provision of a valve core gripper device capable of servicing a tire.
Still another objective of the present invention is the provision of a valve core gripper device, which can be releasably secured to a valve core.
Also, an objective of the present invention is the provision of a valve core gripper device capable of removing the valve core from a tire valve without damaging the valve housing.
A further objective of the present invention is the provision of a valve core gripper device capable of inserting the valve core into a tire valve without damaging the valve housing.
A still further objective of the present invention is the provision of a valve core gripper device capable of removing the valve core from a refrigerant system without damaging the refrigerant system.
Yet a further objective of the present invention is the provision of a valve core gripper device capable of inserting the valve core into a refrigerant system without damaging the refrigerant system.
Another objective of the present invention is the provision of a valve core gripper device capable of servicing a high pressure tire.
These and other objectives of the invention (which other objectives become clear by consideration of the specification, claims and drawings as a whole) are met by providing a valve core gripper device capable of providing a gripping or a grasping collet, that extends out of the remover end and clips onto the small ball end of a valve core, to insert or remove that valve core. This device has many uses due to available modifications including, but not limited, a tire valve, a refrigerator line, and a high pressure tire valve. The device may permit the valve to receive or expel gas.
Throughout the figures of the drawings, where the same part appears in more than one figure of the drawings, the same number is applied thereto.
Reference will now be made in detail to several embodiments of the invention that are illustrated in accompanying drawings. Whenever possible, the same or similar reference numerals are used in the drawings and the description to refer to the same or like parts or steps. The drawings are in simplified form and are not to precise scale. For purposes of convenience and clarity only, directional terms such as top, bottom, left, right, up, over, above, below, beneath, rear, and front, may be used with respect to the drawings. These and similar to directional terms are not to be construed to limit the scope of the invention in any manner. The words attach, connect, couple, and similar terms with their inflectional morphemes do not necessarily denote direct or intermediate connections, but may also include connections through mediate elements or devices.
The valve core gripper device of this invention is useful in many ways. It is especially suitable for use with a refrigerant valve or tire valve. The valve core gripper device of this invention may also be used with high-pressure tire, after the appropriate modifications are made. From the valve core gripper device, a grasping, collet extends from one end or remover end of the gripper device and attaches to an end of the valve core. Typically, this gripper device can be applied to a Schrader valve core or a tire valve core. The valve core gripper device has a housing. The collet extends from the remover end of that housing to grip the valve core. At the other end or gripping end of the housing is an appropriate gripping device. That gripping device can be a ring, to facilitate handling of the valve core gripper device.
Within the housing is a bias spring, also known as a retractor spring, supported by set screws or other holding device, which permit the collet to extend from the housing and grasp the valve core. With such a strong grip on the valve core, it becomes easy to insert or remove the valve core without damaging the surrounding area. O-rings can be used for supporting pressure in the housing to hold the valve core as desired.
The bias spring may be inserted into the housing and the retractor assembly. The retractor assembly includes the key ring, the retractor hanger handle, the housing and the grasping surface on the outside of the housing. A set screw in cooperation with the retractor assembly holds the spring in the desired position. The screw is adjusted so that the retractor handle assembly may slide easily in the housing without falling apart. The retractor handle may have an angled recess, which permits the twisting thereof a full 360 degrees.
A user may slide fingers into the key ring for an over-the-top attack on the valve core, and operate the housing with the thumb and middle finger, while using the first finger to retract the handle and the cowling against the tension of the spring. This action extends the grasping collet to securely contact the valve core, and remove the valve core from the housing or insert the valve core. The user has the hollowed out end of the grasping collet to latch on to the valve core.
After releasing the retractor and spring tension, the user may fold the grasping collet back into the housing of the valve core remover, thereby locking the grasping collet securely around the valve core and holding valve core securely. A user may then twist housing until the notch at the remover end of the housing slides over the valve core. The valve core may be twisted out of the housing counterclockwise or inserted therein clockwise.
The valve core tool can be made of high impact plastic, metal, composite materials or combinations thereof. It may or may not need a typical metal spring. The plastic pieces can be snap fitted or snapped together. Thus, a fastener may not be needed to hold the valve core tool together.
The preferred material to construct the device is stainless steel because of the strength of that material and, more importantly, its anti friction properties. In the high areas of its use, strength is important. Anti friction properties are important to avoid undue heat and other possible dangers.
The valve core tool can easily be reconfigured into many shape and sizes For example, a screw driver size device for easier handling is available. Additionally, the valve core tool may also include a storage area for extra valve cores. Then a tire pressure gauge can also be included.
The valve core tool can be used to easily deflate tires of all sorts simply by placing the tip of the tool into the valve stem and pressing the button. While the valve core tool does not need to be attached to the valve core to accomplish this task, it can be attached as well.
The valve core tool can be constructed with less parts than shown and function similarly. For example, the gripper portion of the device may be constructed with less than 4 or more than 4 gripper fingers.
In
Turning now to
Now adding
Exhaust vents 316 are apertures in safety relief adapter 310, which permit the escape flow 376 of air or gas from high-pressure tire 320 when attached to tire male coupling 380. Such flow is better due to deflective edge 318 on exhaust vents 316. Female coupling threads 246 being in safety relief adapter 310 are oppositely disposed from the slide aperture 280. Safety relief adapter 310 combines with female coupling threads 246 for a positive grip on the high pressure tire 320, in order to provide for inflating or deflating the high pressure tire 320.
Now moving on to
Thus, it may be seen how tire valve core wrench 100 and refrigerator valve wrench 200 cooperate to provide service to a refrigerant line 122. The twist control 118 along with the pushbutton 114 on them provide for good control of valve core 110 removal or insertion.
The workings of valve core wrench 100 are clarified in
In
Knurled grip 144 on the exterior of housing body 148 adds an extra measure of control to the tire valve core wrench 100. Above knurled grip 144 is threaded aperture 152, which receives an adjustment screw in the form of set screw 154 in
With clip on 410 (
Travel stop 134 is a taper on the pushbutton 114, which cooperates with set screw 154 to limit the travel of pushbutton 114. The retracted position 172 for gripper canal 168 (
With the addition of
With
A threaded bushing end 132 is received in threaded relation with clockwise female threads 206, which are positioned on an end of extractor housing tube 230. Oppositely disposed from the threaded bushing end 132 on extractor housing tube 230 are counterclockwise male threads 232. Extractor 236 fits within extractor housing tube 230, with a screw flat 238 therein and a longitudinal slot 164 thereon and oppositely disposed from the screw flat 238.
Slide aperture 280 in coupling collar 242 receives extractor housing tube 230. Knurled grip 144 facilitates use of coupling collar 242. Second O-ring 252 and third O-ring 254 support seal collar 256 within coupling collar 242. First O-ring 250 also supports the seal collar 256 against threads 246 within coupling collar 242.
Considering now the refrigeration line 290 of
From coupling collar 242, operation on the high pressure tire 320 is also possible with this assembly. The safety release sleeve 310 also has slide aperture 280, with a knurled grip 144 on the outside thereof. Safety release sleeve 310 includes exhaust vents 316 to compensate for the high pressure tire 320 at the tire male coupling 380 thereof. Valve wrench 268 can only pass through the end of the safety release sleeve 310 at female coupling threads 246 and contact valve core 110, for insertion or removal thereof, relative to the high pressure tire 320.
Referring now to
To further clarify extractor 236, one considers now
With
With
With
Turning now to
Referring now to
The valve core grip 550 can be made almost entirely out of high impact plastic or composite materials, as well as metal or combinations thereof. It includes housing structure 552. It may or may not need a typical metal spring. The plastic pieces can be snap fitted or snapped together. Thus, a fastener may not be needed to hold it together.
The valve core grip 550 has an extending device 554 with core gripper 556 thereon. Core gripper 556 may be constructed with less than four or more than four gripper fingers. Core gripper 556 may continue with a cylindrical gripping area, a spherical gripping area or other desired shape. Other options include an optional tire gauge 558 or a storage compartment 560 cooperating with the valve core tool 100. For example, storage compartment 560 may store additional valve cores 110.
This application—taken as a whole with the abstract, specification, claims, and drawings—provides sufficient information for a person having ordinary skill in the art to practice the invention disclosed and claimed herein. Any measures necessary to practice this invention are well within the skill of a person having ordinary skill in this art after that person has made a careful study of this disclosure.
Because of this disclosure and solely because of this disclosure, modification of this tool can become clear to a person having ordinary skill in this particular art. Such modifications are clearly covered by this disclosure.
Number | Name | Date | Kind |
---|---|---|---|
1496870 | Brown | Jun 1924 | A |
2096676 | Conrad | Oct 1937 | A |
3644982 | Anderson | Feb 1972 | A |
3718057 | Berchtold | Feb 1973 | A |
3840967 | Olson | Oct 1974 | A |
3875756 | Olson | Apr 1975 | A |
3975713 | Rivero | Aug 1976 | A |
4305193 | Anderson | Dec 1981 | A |
5005375 | Manz et al. | Apr 1991 | A |
5097580 | Story | Mar 1992 | A |
RE34781 | Spalink et al. | Nov 1994 | E |
6122810 | McInnes | Sep 2000 | A |
6152165 | Fukuda | Nov 2000 | A |
6253436 | Barjesteh et al. | Jul 2001 | B1 |
6473965 | Levy et al. | Nov 2002 | B2 |
6612005 | Rivers | Sep 2003 | B2 |
6862787 | Groves | Mar 2005 | B2 |
6901947 | Danielson et al. | Jun 2005 | B2 |
6944924 | Hayes | Sep 2005 | B2 |
7559245 | Knowles et al. | Jul 2009 | B2 |
20080190208 | Appler et al. | Aug 2008 | A1 |
20110197978 | Harji et al. | Aug 2011 | A1 |