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You are an expert at summarizing long articles. Proceed to summarize the following text: 
TECHNICAL FIELD 
       [0001]    The disclosed embodiments relate to, and claim priority over, U.S. patent application Ser. No. 14/491,861 of a pressure plunger for clearing clogs from a fluid channel. In particular, the present technology relates to a significant difference in the amount of fluid displaced when inserting the plunger into fluid with no assembly or disassembly required for use or for sanitizing. 
     
    
     BACKGROUND 
       [0002]    Fluid channels can become clogged by cumulated materials or particles suspended in fluids flowing through fluid channels. Clogs are dislodged by generating pressure in the fluids against the obstruction, pushing it through, or by creating suction which pulls the materials back enabling them to rearrange separate and flow through the channel. When inserting a bulbous plunger or-an assembled cylindrical plunger into the fluid a large volume of fluid is displaced. This can potentially cause an unsanitary overflow. A pressure plunger which may be used by first inserting a hollow tube through the fluid and does not displace the volume of water taken up by the volume of the cylinder eliminates any significant risk of fluid overflow. The upper tube cylinder can then be inserted without assembling to create the pressure against or away from the obstruction to remove the clog. It is advantageous to have an improved pressure plunger that does not cause potential overflow. It is also advantageous that the plunger is comprised of only 2 individual parts which function together yet do not require assembly or disassembly and are then easily cleaned and sanitized. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0003]      FIG. 1  is a schematic cross-sectional view illustrating a plunger apparatus in accordance with embodiments of the present technology. 
           [0004]      FIG. 2  is a flowchart illustrating a method in accordance with embodiments of the present technology. 
       
    
    
     DETAILED DESCRIPTION 
       [0005]    Specific details of several embodiments of pressure plungers and associated methods are described below. A person skilled in the relevant art will also understand that the technology may have additional embodiments, and that the technology may be practiced without several of the details of the embodiments described below with reference to  FIGS. 1 and 2 . 
         [0006]    A plunger apparatus in accordance with the present technology can be easily used without being assembled and disassembled. The non-assembling-disassembling feature provides at least the benefits of (1) a plunger apparatus in accordance with the present technology that can accommodate fluid therein, thereby avoiding or significantly mitigating possible fluid displacement and or overflow and (2) enabling a user to easily maintain or clean the pressure plunger. Several embodiments of pressure plungers in accordance with the present technology can include an outer tube that defines a chamber, an actuator (e.g., a hollow cylinder or a rod-like member) which can be positioned inside the outer tube, a seal (e.g., a seal ring or molded seal) positioned between the outer tube and the actuator, and a flexible compressible fitting which is part the outer tube. In some embodiments, the fitting and the outer tube can be integrally formed together, such as by a molding process. A user can operate the pressure plunger by moving (e.g., pushing and/or pulling) the actuator so as to generate positive and/or negative pressure differences that dislodge clogs from a fluid channel (e.g., in a toilet or a drain). 
         [0007]    The seal can be operably (e.g., movably) attached to an inner surface of the outer tube and fixedly (e.g., non-movably) attached to an outer surface of the actuator. During operation when the pressure plunger is inserted into a clogged fluid channel, the seal can create an air-tight chamber inside the chamber defined by the outer tube. As a user moves (e.g., pushes and/or pulls) the actuator, the seal can move accordingly while maintaining the air-tight condition. The movements of the actuator and the seal can thus generate pressure differences that dislodge a clog in a clogged fluid channel. 
         [0008]    In some embodiments, the fitting can be designed to have a flexible compressible end to fit a fluid channel so as to provide a close contact therewith. This arrangement enables a user to easily insert and fit the plunger apparatus into a curved/angled fluid channel or a fluid channel with a narrow opening. In some embodiments, the fitting can have a compressible seal that can engage the perimeter surface of a fluid channel. 
         [0009]    Methods for mitigating a clogging in a fluid channel are also disclosed. A method can include first positioning the lower part of a plunger apparatus (e.g., an outer tube with a flexible compressible seal at the bottom) into a clogged fluid channel. More particularly, the method can include positioning the fitting attached to the outer tube into the clogged fluid channel. The method can then include inserting the actuator cylinder into the top of the lower tube to operably attach the gasket end with the inner surface of the lower tube connected to the clogged fluid channel. The method can then move (e.g., push) the actuator positioned inside the outer tube in a first direction (e.g., a direction towards the clogged fluid channel) over a first distance (e.g., along a portion of the length of the outer tube) so as to generate a first pressure difference in the clogged fluid channel. The method can further include moving (e.g., pull) the actuator in a second direction (e.g., opposite to the first direction) over a second distance (e.g., slightly smaller than the first distance) so as to generate a second pressure difference in the clogged fluid channel. The method can repeatedly move the actuator so as to generate proper pressure differences until a clog is dislodged from the clogged fluid channel. If the user pulls the actuator near the top of the lower cylinder the seal will go beyond the vent holes which will allow in ambient air to break vacuum and not allow fluid to be pulled to the top of the lower tube and potentially create unsanitary spillage. 
         [0010]      FIG. 1  is a schematic cross-sectional view illustrating a plunger apparatus  100  in accordance with embodiments of the present technology. As shown in  FIG. 1 , the plunger apparatus  100  includes an outer tube  101 , an actuator  105  which can be positioned inside the outer tube  101 , and a seal  111 . 
         [0011]    In some embodiments, the lower outer tube  101  and the actuator  105  can each be integrally formed into one piece using a variety of materials. In the illustrated embodiment, the opening  107  can include a flexible compressible seal  109 . In some embodiments, the flexible compressible seal  109  can be made of flexible compressible materials (e.g. silicone or other suitable materials). In other embodiments, the seal  109  can have different shapes for fitting different types of fluid channels. 
         [0012]    As shown in  FIG. 1 , the lower tube  101  can be positioned to connect the lower seal to the opening of the fluid channel. The seal  111  can be positioned between the outer tube  101  and the actuator  105 . The seal  111  is operably (e.g., movably) attached to an inner surface  1011  of the outer tube  101  and an integral part of the outer surface  1051  of the actuator  105 . When a user positions the plunger apparatus  100  into a fluid channel  113  (having a fluid  115  and at least one clog  117  therein), the seal  111  can create a substantive air-tight chamber  119  inside the outer tube  101 . When a user moves (e.g., pushes or pulls) the actuator  105  upwardly or downwardly (e.g., along the vertical axis of  FIG. 1 ), the seal  111  can be moved accordingly to maintain the substantive air-tight chamber  119 . The movements of the actuator  105  and the seal  111  can generate positive and negative pressure differences of the fluid  115  (e.g., the actuator  105  compresses the air in the substantive air-tight chamber  119  and the compressed air then further compresses the fluid  115 ) so as to dislodge the clog  117  in the fluid channel  113  (e.g., the clog  117  starts to flow with the fluid  115  in the fluid channel  113 ). In other embodiments, the substantive air-tight chamber  119  can be filled with the fluid  115 . In this case, the movement of the actuator  105  and the seal  111  can generate a pressure difference of the fluid  115  by directly compressing the fluid  115 . In some embodiments, the generated pressure differences can drive fluid  115  positioned inside the outer tube  101  and the fitting  103  to be ejected from the plunger apparatus  100  (e.g., through the opening  107 ) to the fluid channel  113 . 
         [0013]    The actuator  105  can include a cap  1052 . When the cap  1052  contacts the outer tube  101 , the actuator  105  stops moving downwardly (e.g., along the vertical axis of  FIG. 1 ). In the illustrated embodiment, the cap  1052  can include a handle with a recess  121  and a stop  123 . The handle  1052  and the recess  121  can facilitate a user to grasp the actuator  105  during operation. The stop  123  can be configured to stop the downward movement of the actuator  105 . In some embodiments, the stop  123  can be made of hard plastic material (e.g., PVC). In some embodiments, the stop  123  and the handle  121  can be integrally formed. In some embodiments, the cap  1052  can have different shapes depending on various designs. 
         [0014]    As shown in  FIG. 1 , the outer tube  101  can include a vent (e.g., a ventilation hole or inner grooves at the top of tube  101 )  1012 . The vent  1012  is configured to enable ambient air to flow into or out of the outer tube  101  when the actuator  105  is removed or inserted. For example, when the seal  111  moves (e.g., upwardly) over the vent  1012 , ambient air can flow into the outer tube  101  via the vent  1012  thereby breaking vacuum of upward pressure so as to prevent the fluid  115  from moving up and reaching the top of the outer tube  101 . 
         [0015]      FIG. 2  is a flowchart illustrating a method  400  in accordance with embodiments of the present technology. The method  400  illustrates an operation of a plunger apparatus. The plunger apparatus can include an outer tube, a fitting coupled to the outer tube, an actuator positioned inside the outer tube, and a seal. The method  400  starts at block  401  and then continues at block  403  by positioning the fitting of the lower tube in a clogged fluid channel. The method  400  continues at block  405  by fixedly engaging the fitting with a surface of the clogged fluid channel. In some embodiments, the method  400  can include deforming a flexible compressible seal (e.g.  109  of the fitting) when creating a connection between lower outer chamber  101  and the surface of the clogged fluid channel. 
         [0016]    At block  407 , the method  400  continues by inserting the upper actuator cylinder into the opening of the top of the lower cylinder. At block  409 , the method  400  continues by moving (e.g., pushing) the actuator positioned inside the outer tube in a first direction (e.g., downwardly along the vertical direction) over a first distance so as to generate a first pressure difference in the clogged fluid channel. The method continues at block  411  by moving (e.g., pulling) the actuator in a second direction opposite to the first direction (e.g., upwardly along the vertical direction) over a second distance so as to generate a second pressure difference in the clogged fluid channel. At block  413 , the method  400  continues by moving (e.g., pushing) the actuator in the first direction (e.g., downwardly along the vertical direction) over a third distance so as to generate a third pressure difference in the clogged fluid channel. 
         [0017]    The method  400  then proceeds to a decision at block  415  to determine whether a clog in the fluid channel has been resolved. If so, then the method  400  ends at block  417 . If not the method can return to block  411 , depending on conditions, to repeat the movements of the actuator described in blocks  411  and  413  until the clogging is resolved. 
         [0018]    From the foregoing, it will be appreciated that specific embodiments of the technology have been described herein for purposes of illustration, but that various modifications may be made without deviating from the disclosure. Certain aspects of the new technology described in the context of particular embodiments may also be combined or eliminated in other embodiments. Moreover, although advantages associated with certain embodiments of the new technology have been described in the context of those embodiments, other embodiments may also exhibit such advantages and not all embodiments need necessarily exhibit such advantages to fall within the scope of the technology. Accordingly, the disclosure and associated technology can encompass other embodiments not expressly shown or described herein.

Summary:
A pressure plunger which consists of a hollow lower tube inserted into a clogged toilet or drain causing no significant displacement, of fluid. After the lower tube&#39;s compressible end is fixedly attached to a fluid channel, the actuator cylinder may be inserted into the lower tube to create pressure downward and upward to remove blockage. Unlike other designs this plunger consists of two separate sections, each integrally formed, which function together without assembly or disassembly. Vents near the top of the lower tube allow in air to release vacuum pressure when pulling near the top of the lower tube prohibiting fluid being pulled to the top of the lower tube. The lack of assembly and disassembly is also significantly different regarding cleaning and sanitizing. The upper actuator tube can be pulled out and cleaned on the outside and the lower tube can be easily cleaned from either end.