Method and apparatus for installation of a toilet system on an aircraft

Abstract
A method of installing a toilet system on board an aircraft is generally described. The toilet system includes a base support having a right base support and a left base support, a toilet bowl, a right side support and a left side support each supporting the toilet bowl. The method comprises lowering the toilet bowl on to the base supports to at least partially engage a first locking mechanism; sliding the toilet bowl in a forward direction to engage a second locking mechanism; and inserting a first pin to couple the right base support to the right side support and a second pin to couple the left base support to the left side support in order to completely engage the first locking mechanism.
Description
FIELD OF THE DISCLOSURE

The present disclosure relates generally to vacuum toilet systems and more particularly, to method and apparatus for installation of such systems.


BACKGROUND

Designing a toilet for an aircraft poses challenges that do not generally occur in ground-based toilet designs. For instance, in an aircraft, space and weight are at a premium, and using regular water-flush toilets is not practical. Also, installing and removing the toilet is much more difficult, since space restrictions make the installation and removal process labor intensive.





DRAWINGS

While the appended claims set forth the features of the present techniques with particularity, these techniques may be best understood from the following detailed description taken in conjunction with the accompanying drawings of which:



FIG. 1 is a perspective view of a toilet configured according to an embodiment.



FIGS. 2A, 2B, 2C, and 2D are a sequential depiction of an installation method of a toilet according to an embodiment.



FIG. 3 is a perspective view of a toilet according to an embodiment.



FIG. 4 is an exploded view of an end face of the support structure of a toilet configured according to an embodiment.



FIG. 5 is a top view of a base support of a toilet configured according to an embodiment.



FIG. 6 is an exploded view of a locking mechanism of a toilet configured according to an embodiment.





DETAILED DESCRIPTION

The following discussion is directed to various exemplary embodiments. However, one possessing ordinary skill in the art will understand that the examples disclosed herein have broad application, and that the discussion of any embodiment is meant only be exemplary of that embodiment, and not intended to suggest that the scope of the disclosure, including claims, is limited to that embodiment.


Certain terms are used throughout the following description to refer to particular features or components. As one skilled in the art will appreciate, different persons may refer to the same feature or component by different names. This document does not intend to distinguish between components or features that differ in name but not function. The drawing figures are not necessarily to scale. Certain features and components herein may be shown exaggerated in scale or in somewhat schematic form and some details of conventional elements may not be shown in interest of clarity and conciseness.


The disclosure is generally directed to a method and apparatus for installing a toilet on board an aircraft. According to an embodiment, the toilet system includes a base support including a right base support and a left base support, a toilet bowl, and side supports including a right side support and a left side support each supporting the toilet bowl. According to some embodiments, the method comprises lowering the toilet bowl supported by the left side support and the right side support on to the base support having the left base support and the right base support to at least partially engage a first locking mechanism; sliding the toilet bowl supported by the left side support and the right side support in a forward direction to engage a second locking mechanism; and inserting a first pin to couple the right base support to the right side support and a second pin to couple the left base support to the left side support in order to completely engage the first locking mechanism.


In an embodiment, the toilet system configured for use on board an aircraft comprises a base support including a right base support and a left base support; a toilet bowl; a side support including a right side support and a left side support each supporting the toilet bowl; a first locking mechanism configured to secure the toilet bowl to the aircraft by coupling the right base support to the right side support and coupling the left base support to the left side support; and a second locking mechanism configured to secure the toilet bowl to the aircraft by coupling the right base support to the right side support and coupling the left base support to the left side support; where the first locking mechanism and the second locking mechanism operate independent of each other.


Turning to FIG. 1, a toilet configured according to an embodiment is shown. The toilet, generally labelled 100, is configured to be deployed on an aircraft, and may be housed within an external housing (not shown). The toilet 100 includes a bowl 102 attached to a frame 104. The frame 104 includes at least a left side support 105 and a right side support 106. In some embodiments, the left side support 105 and the right side support 106 together support the toilet bowl 102 as shown in FIG. 1. The toilet system 100 is mounted on an aircraft structure 110. As shown in FIG. 1, a left base support 114 and a right base support 112 are mounted on the aircraft structure 110. A first locking mechanism 120 (discussed later) couples the right base support 112 to the right side support 106 and couples the left base support 114 to the left side support 105, thereby securing the toilet bowl 102 to the aircraft structure 110. A second locking mechanism 130 (discussed later) also couples the right base support 112 to the right side support 106 and couples the left base support 114 to the left side support 105, thereby further securing the toilet bowl 102 to the aircraft structure 110.


Next, features of the first locking mechanism 120 will be described with reference to FIGS. 3-5. As illustrated more clearly in FIGS. 3 and 5, each of the left base support 114 and the right base support 112 includes a respective tab 314 (508), 316 (506) extending vertically upward from the aircraft structure 110. Each of the left side support 105 and the right support 106 includes a respective end face illustrated in FIG. 4. The end face of the left side support 105 includes a cavity 404 and the end face of the right side support 106 includes a cavity 402. In an embodiment, the tabs 314, 508, 316, 506 are configured to be inserted into the respective cavity 404, 402 of the side supports 105, 106.


As illustrated in FIG. 3, in an embodiment, the tabs 314 (508), 316 (506) and the side supports 105, 106 each include a through-hole 306, 308, 310, 312. In an embodiment, when the first locking mechanism 120 is completely engaged, the through hole 306 in the left side support 105 is configured to be aligned with the through hole 310 in the tab 314 (508) of the left base support 114, and the through hole 308 in the right side support 106 is configured to be aligned with the through hole 312 in the tab 316 (506) of the right base support 112. In some embodiments, a first pin 302 and a second pin 304 are provided to be inserted through the through-holes 308, 312 and 304, 306 respectively to completely engage the first locking mechanism 120. In some embodiments, the first pin 302 and the second pint 304 are each a hitch pin. A person skilled in the art will understand that various other structures may be provided to couple the right base support 112 to the right side support 106 and couple the left base support 114 to the left side support 105 via the tabs 314, 316, 506, 508, the cavities 404, 402 of the side supports 105, 106, and the respective through-holes 306, 308, 310, 312. For instance, according to some embodiments, a cotter pin may be provided. In some embodiments, as shown in FIG. 5, the tabs 506, 508 are provided at a substantially rear portion of the respective base supports 112, 114.


Next, features of the second locking mechanism 130 will be described with reference to FIGS. 2A and 3-6. As can be seen more clearly in FIGS. 5 and 6, the left base support 114 and the right base support 112 each include a respective locking receptacle 504, 502. Moreover, as seen in FIGS. 2A and 3, the end faces of each of the left side support 105 and the right side support 106 includes a cutout portion 208. The left side support has a left side protrusion 318 and the right side support 106 has a right side protrusion 320 extending into the cutout portion 208. According to an embodiment, the left side protrusion 318 is configured to couple with the left side locking receptacle 504 and the right side protrusion 320 is configured to couple with the right side locking receptacle 502. As can be seen more clearly in FIG. 6, the protrusion 604 is configured to be inserted into the locking receptacle 602 and positively engage with the locking receptacle 602 such that some force is required during installation to make a proper fit. According to an embodiment, the locking receptacles 502, 504 are provided on a substantially mid-point of the respective base supports 112, 114.


Next, a method of installation of the toilet 100 and the engagement of the first locking mechanism 120 and the second mechanism 130 (according to an embodiment) will be described with reference to FIGS. 2A, 2B, 2C, and 2D. As shown in FIGS. 2A-2D, a wall 250 of the aircraft lavatory does not leave much space for installation of the toilet 200. Conventional toilet systems must be tilted back to engage a rear locking mechanism. Then the toilet must be rotated downward to fully seat on the base support and is then locked into place using quarter-turn fasteners or hitch pins at the front of the assembly. This could prove to be cumbersome due to the proximity of lavatory shroud trim or other interferences in the area. The toilet apparatus configured according to an embodiment illustrated in the figures addresses these concerns.



FIGS. 2A-2D illustrate a side view of the toilet 200. In particular, the left side support 105 and the left base support 114 are shown along with features of the first locking mechanism 120 and the second locking mechanism 130. A person skilled in the art will understand that the description below similarly applies to the right side support 106 and the right base support 114.


Referring now to FIG. 2A, the toilet 200 is first lowered on to the left base support 114 in the direction of the arrow shown. According to some embodiments, the cavities 404, 402 of the side supports 105, 106 are aligned with the respective tabs 314, 316, 508, 506, and the cutout portion 208 in the side supports 105, 106 is aligned with the respective locking receptacle 504, 502. In the example embodiment shown in FIG. 2A, the cutout portion 208 is positioned directly above a locking receptacle 204 and the cavities of the side supports are positioned directly above the tab 202.


Next, as shown in FIG. 2B, the toilet 200 is lowered onto the base supports. In an embodiment shown in FIG. 2B, the projection 206 is positioned next to the locking receptacle 204. In the arrangement shown in FIG. 2B, the first locking mechanism 120 is at least partially engaged where the tabs 314, 316, 508, 506 are inserted into the respective cavities 404, 402 of the side supports 105, 106. Next, the method includes moving the toilet 200 in a forward direction away from the wall 250 in the direction of the arrow shown in FIG. 2B.


As illustrated in FIG. 2C, the second locking mechanism 130 is engaged when the toilet 200 is moved in a forward direction. In particular, the projection 206 is inserted into the locking receptacle 204 to couple the side support to the base support. As discussed above, the second locking mechanism 130 couples the right base support 112 to the right side support 106 and couples the left base support 114 to the left side support 105. In addition, as discussed above with reference to FIG. 3, the through hole 306 in the left side support 105 is configured to be aligned with the through hole 310 in the tab 314 (508) of the left base support 114, and the through hole 308 in the right side support 106 is configured to be aligned with the through hole 312 in the tab 316 (506) of the right base support 112.


With reference to FIG. 2D, a pin 210 is inserted into the through-holes of the tab 202 and the side supports to completely engage the first locking mechanism 120 according to some embodiments. FIG. 2D illustrates the final position of the toilet 200 once it is installed according to the embodiments discussed above.


The use of any and all examples, or exemplary language (e.g., “such as”) provided herein, is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention unless otherwise claimed. Numerous modifications and adaptations will be readily apparent to those of ordinary skill in this art without departing from the spirit and scope of the invention as defined by the following claims. Therefore, the scope of the invention is defined not by the detailed description of the invention but by the following claims, and all differences within the scope will be construed as being included in the invention.


The particular implementations shown and described herein are illustrative examples and are not intended to otherwise limit the scope of the disclosure in any way. For the sake of brevity, conventional electronics, control systems, software development and other functional aspects of the systems (and components of the individual operating components of the systems) may not be described in detail.


The steps of all methods described herein are performable in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. No item or component is essential to the practice of the invention unless the element is specifically described as “essential” or “critical”. It will also be recognized that the terms “comprises,” “comprising,” “includes,” “including,” “has,” and “having,” as used herein, are specifically intended to be read as open-ended terms of art. The use of the terms “a” and “an” and “the” and similar referents in the context of describing the invention (especially in the context of the following claims) are to be construed to cover both the singular and the plural, unless the context clearly indicates otherwise. In addition, it should be understood that although the terms “first,” “second,” etc. may be used herein to describe various elements, these elements should not be limited by these terms, which are only used to distinguish one element from another. Furthermore, recitation of ranges of values herein are merely intended to serve as a shorthand method of referring individually to each separate value falling within the range, unless otherwise indicated herein, and each separate value is incorporated into the specification as if it were individually recited herein.

Claims
  • 1. A toilet system configured for use on board an aircraft comprising: a base support mounted on the aircraft, the base support including a right base support and a left base support; a toilet bowl;a right side support and a left side support each supporting the toilet bowl;a first locking mechanism configured to secure the toilet bowl to the aircraft by coupling the right base support to the right side support and coupling the left base support to the left side support, the first locking mechanism comprising: a tab provided on each of the left base support and the right base support, each tab having a through-hole and end portion of each of the left side support and the right side support having a corresponding through-hole;a corresponding cavity on an end face of each of the left side support and the right side support, each tab configured to be inserted into the respective cavity on the end faces of each of the left side support and the right side support; anda first pin configured to be inserted through the through-hole on i) one of the left side support and the right side support, and the through-hole on the tab on ii) one of the left base support and the right base support; anda second locking mechanism configured to secure the toilet bowl to the aircraft by coupling the right base support to the right side support and coupling the left base support to the left side support; whereinthe first locking mechanism and the second locking mechanism operate independent of each other.
  • 2. The toilet system according to claim 1, wherein the first locking mechanism further comprises: a second pin configured to be inserted through the through-hole on i) the other of the left side support and right side support; and the through-hole on the tab on ii) the other of the left base support and the right base support.
  • 3. The toilet system according to claim 2, wherein the first pin and the second pin are a hitch pin.
  • 4. The toilet system according to claim 1, wherein the tabs are provided at a rear portion of the respective left base support and the right base support.
  • 5. The toilet system according to claim 1, wherein the second locking mechanism comprises: a right side protrusion extending from an end of the right side support and a left side protrusion extending from an end of the left side support; anda respective locking receptacle positioned on each of the right base support and the left base support and corresponding to the right side protrusion and the left side protrusion; whereinthe right side protrusion and the left side protrusion are configured to be inserted into the respective locking receptacles.
  • 6. A method of installing a toilet system on board an aircraft, the toilet system including a base support mounted on the aircraft, the base support having a right base support and a left base support, a toilet bowl, a right side support and a left side support each supporting the toilet bowl, the method comprising: lowering the toilet bowl supported by the left side support and the right side support on to the left base support and the right base support respectively to at least partially engage a first locking mechanism;sliding the toilet bowl supported by the left side support and the right side support in a forward direction to engage a second locking mechanism; and
  • 7. The method according to claim 6, wherein the first locking mechanism comprises: a tab provided on each of the left base support and the right base support; anda corresponding cavity on an end face of each of the left side support and the right side support;wherein at least partially engaging the first locking mechanism comprises
  • 8. The method according to claim 7, wherein the tab on each of the left base support and the right base support has a through-hole; and an end portion of each of the left side support and the right side support has a corresponding through-hole; and wherein completely engaging the first locking mechanism further comprises inserting the first pin through the through-hole on the right side support and the through-hole on the tab on the right base support; andinserting the second pin through the through-hole on the left side support and the through-hole on the tab on the left base support.
  • 9. The method according to claim 6, wherein the first pin and the second pin are a hitch pin.
  • 10. The method according to claim 7, wherein the tabs are provided at a rear portion of the respective left base support and the right base support.
  • 11. The method according to claim 6, wherein the second locking mechanism comprises: a right side protrusion extending from an end of the right side support and a left side protrusion extending from an end of the left side support; anda respective locking receptacle positioned on each of the right base support and the left base support and corresponding to the right side protrusion and the left side protrusion;wherein engaging the second locking mechanism comprises inserting the right side protrusion and the left side protrusion into the respective locking receptacles by sliding the right side support and the left side support in a forward direction.
  • 12. A toilet system configured for use on board an aircraft comprising: a base support mounted on the aircraft;a toilet bowl;a side support configured to support the toilet bowl;a first locking mechanism configured to secure the toilet bowl to the aircraft by coupling the base support to the side support, the first locking mechanism comprising: a tab provided on the base support; anda corresponding cavity on an end face of the side support, wherein the tab is configured to be inserted into the respective cavity on the end face of the side support;wherein the tab on the base support has a through-hole, an end portion of the side support has a corresponding through-hole, and the first locking mechanism further comprises a pin configured to be inserted through the through-hole on the side support and the through-hole on the tab on the base support; anda second locking mechanism configured to secure the toilet bowl to the aircraft by coupling the base support to the side support; wherein the first locking mechanism and the second locking mechanism operate independent of each other.
  • 13. The toilet system according to claim 12, wherein the second locking mechanism comprises: a protrusion extending from an end of the side support; anda locking receptacle positioned on the base support and corresponding to the protrusion; whereinthe protrusion is configured to be inserted into the locking receptacle.
CROSS-REFERENCES TO RELATED APPLICATIONS

This claims the benefit of U.S. Provisional Patent Application No. 62/140,260, entitled “VACUUM TOILET SYSTEM AND INSTALLATION METHOD THEREOF,” and filed on Mar. 30, 2015, which is incorporated herein by reference in its entirety.

US Referenced Citations (115)
Number Name Date Kind
2680714 Carlsson et al. Jun 1954 A
2708033 Thomas May 1955 A
2878829 Folmsbee Mar 1959 A
3411162 Palmer Nov 1968 A
3447777 Carlson Jun 1969 A
3510099 Crump May 1970 A
3616617 De Groote Nov 1971 A
3719957 Riedel Mar 1973 A
3722850 Kemper Mar 1973 A
3835479 Milette et al. Sep 1974 A
3902876 Moen et al. Sep 1975 A
3939500 Miller et al. Feb 1976 A
3995328 Carolan et al. Dec 1976 A
4041554 Gregory et al. Aug 1977 A
4237934 Gregory et al. Dec 1980 A
4289611 Brockmann Sep 1981 A
4376314 Iwans Mar 1983 A
4438781 Brenholt Mar 1984 A
4469497 Linhardt Sep 1984 A
4511117 Soderstrom Apr 1985 A
4546502 Lew Oct 1985 A
4601210 Brown Jul 1986 A
4612120 Box Sep 1986 A
4635901 Pond Jan 1987 A
4713847 Oldfelt et al. Dec 1987 A
4783859 Rozenblatt et al. Nov 1988 A
4811754 Wilhelm Mar 1989 A
4968325 Black et al. Nov 1990 A
5007117 Oldfelt et al. Apr 1991 A
5035011 Rozenblatt et al. Jul 1991 A
5048130 Brotman et al. Sep 1991 A
5065786 Rozenblatt Nov 1991 A
5099867 Emery Mar 1992 A
5142712 Hennessy Sep 1992 A
5231706 Kendall Aug 1993 A
5271105 Tyler Dec 1993 A
5317763 Frank et al. Jun 1994 A
5326069 Clear et al. Jul 1994 A
5344085 Hofseth Sep 1994 A
5372710 Frank Dec 1994 A
5464191 Shenk Nov 1995 A
5515554 Clear et al. May 1996 A
5535770 Nurmi Jul 1996 A
5604938 Tyler Feb 1997 A
5625905 Woods May 1997 A
5707027 Hiesener Jan 1998 A
5754987 Johansson et al. May 1998 A
5813061 Tornqist Sep 1998 A
5873135 Tornqvist Feb 1999 A
5909968 Olin et al. Jun 1999 A
5956780 Tyler Sep 1999 A
6085366 Pondelick et al. Jul 2000 A
6131596 Monson Oct 2000 A
6148860 Sigler Nov 2000 A
6152160 Bowden Wilcox et al. Nov 2000 A
6186162 Purvis et al. Feb 2001 B1
6202683 Smith Mar 2001 B1
6212700 Giesler et al. Apr 2001 B1
6223357 Claas May 2001 B1
6226807 Rozenblatt et al. May 2001 B1
6240575 Polo Sanchez Jun 2001 B1
6325356 Rozenblatt Dec 2001 B1
6347416 Anderson et al. Feb 2002 B1
6349424 Stradinger et al. Feb 2002 B1
6349425 Stradinger et al. Feb 2002 B1
6353942 Pondelick et al. Mar 2002 B1
6370709 Stradinger et al. Apr 2002 B1
6394122 Sibley et al. May 2002 B1
6402799 Kokubo et al. Jun 2002 B1
6453481 Pondelick et al. Sep 2002 B1
6484743 Baukman Nov 2002 B2
6502278 Oh et al. Jan 2003 B2
6513174 Johansson Feb 2003 B1
6536054 Anderson et al. Mar 2003 B2
6536055 Pondelick et al. Mar 2003 B2
6546593 Oh et al. Apr 2003 B2
6575425 Betz Jun 2003 B1
6648002 Lappalainen Nov 2003 B2
6704947 Stradinger et al. Mar 2004 B2
6729368 Nguyen May 2004 B2
6732386 Anderson et al. May 2004 B2
6748973 Lindroos Jun 2004 B2
6763531 Huffman et al. Jul 2004 B1
6883188 Sigler et al. Apr 2005 B2
6977005 Erdmann et al. Dec 2005 B2
6981285 Sigler et al. Jan 2006 B2
7127749 Ling Oct 2006 B2
7156363 Parsons et al. Jan 2007 B2
7169305 Gomez Jan 2007 B2
7188822 Marcichow et al. Mar 2007 B2
7331365 Nguyen Feb 2008 B2
7690053 Pondelick Apr 2010 B2
7921478 Vanini Apr 2011 B1
8607370 Hoang et al. Dec 2013 B2
8613115 Seibt et al. Dec 2013 B2
8769731 Seibt Jul 2014 B2
8887320 Dezarn et al. Nov 2014 B2
20010034902 Tyler Nov 2001 A1
20020069459 Pondelick et al. Jun 2002 A1
20020145080 Renken et al. Oct 2002 A1
20050173336 Arnaud Aug 2005 A1
20060075546 Sigler Apr 2006 A1
20070079432 Shoikhet et al. Apr 2007 A1
20070226887 Lappalainen et al. Oct 2007 A1
20070297894 Dandasi et al. Dec 2007 A1
20100083433 Pondelick Apr 2010 A1
20100083435 Hoang et al. Apr 2010 A1
20110173743 Jensen et al. Jul 2011 A1
20140041109 Stauber et al. Feb 2014 A1
20140101837 Boodaghians et al. Apr 2014 A1
20140137319 Beach et al. May 2014 A1
20140208498 Beach et al. Jul 2014 A1
20140223655 Dillard Aug 2014 A1
20140259343 Wilson et al. Sep 2014 A1
20150013058 Boodaghians et al. Jan 2015 A1
Foreign Referenced Citations (3)
Number Date Country
1818462 Aug 2007 EP
2050882 Sep 2015 EP
2008010570 Jan 2008 WO
Non-Patent Literature Citations (13)
Entry
Non-Final Office Action on U.S. Appl. No. 15/084,185, dated Apr. 7, 2017, 14 pages.
International Search Report and Written Opinion issued in related application PCT/US2016/024983, dated Jun. 17, 2016, 15 pages.
International Search Report and Written Opinion for PCT/US2016/024888, dated Aug. 2016, 10 pages.
International Search Report and Written Opinion for PCT/US2016/024909, dated Jun. 10, 2016, 7 pages.
International Search Report and Written Opinion for PCT/US2016/024936, dated Jun. 16, 2016, 6 pages.
International Search Report and Written Opinion for PCT/US2016/024983, dated Jun. 17, 2016, 9 pages.
Non-Final Office Action for U.S. Appl. No. 15/084,078, dated Jan. 5, 2018, 8 pages.
Ex Parte Quayle Action for U.S. Office Action on U.S. Appl. No. 15/084,257 dated Sep. 27, 2017. 24 pages.
Final Office Action for U.S. Appl. No. 15/084,185 dated Oct. 20, 2017. 12 pages.
International Search Report for PCT/US2016/024963, dated Aug. 16, 2016, 4 pages.
Non-Final Office Action for U.S. Appl. No. 15/084,317 dated Sep. 27, 2017. 25 pages.
U.S. Notice of Allowance on U.S. Appl. No. 15/084,257 dated Dec. 7, 2017. 7 pages.
Final Office Action issued for U.S. Appl. No. 15/084,317 dated May 7, 2018. 8 pages.
Related Publications (1)
Number Date Country
20160289943 A1 Oct 2016 US
Provisional Applications (1)
Number Date Country
62140260 Mar 2015 US