US20190113145A1 - Valve - Google Patents
Valve Download PDFInfo
- Publication number
- US20190113145A1 US20190113145A1 US16/218,762 US201816218762A US2019113145A1 US 20190113145 A1 US20190113145 A1 US 20190113145A1 US 201816218762 A US201816218762 A US 201816218762A US 2019113145 A1 US2019113145 A1 US 2019113145A1
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- US
- United States
- Prior art keywords
- valve
- stem
- slot
- housing
- protrusion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/20—Check valves specially designed for inflatable bodies, e.g. tyres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P7/00—Securing or covering of load on vehicles
- B60P7/06—Securing of load
- B60P7/065—Securing of load by pressurizing or creating a vacuum in a bag, cover or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
- B65D81/05—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents
- B65D81/051—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents using pillow-like elements filled with cushioning material, e.g. elastic foam, fabric
- B65D81/052—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents using pillow-like elements filled with cushioning material, e.g. elastic foam, fabric filled with fluid, e.g. inflatable elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
- F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/52—Mechanical actuating means with crank, eccentric, or cam
- F16K31/528—Mechanical actuating means with crank, eccentric, or cam with pin and slot
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2801/00—Application field
- B65H2801/63—Dunnage conversion
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/80—Packaging reuse or recycling, e.g. of multilayer packaging
-
- Y02W30/807—
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/3584—Inflatable article [e.g., tire filling chuck and/or stem]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/3584—Inflatable article [e.g., tire filling chuck and/or stem]
- Y10T137/374—With cap
Definitions
- Inflatable dunnage bags are commonly used to stabilize cargo during transportation of cargo containers (such as railroad cars and semi-trailers), thereby improving safety and reducing the likelihood of damage to the cargo.
- Dunnage bags are commonly inflated and deflated before and after use through valves configured for this purpose.
- Dunnage bags may be positioned in any voids or spaces between the cargo and/or between the cargo and the walls of the cargo container and inflated to a desired internal pressure, such as a designated operating pressure.
- the user To inflate a dunnage bag, the user connects a pressurized air supply to the valve, which is attached to the inflatable/deflatable body of the dunnage bag and which forms an opening in the dunnage bag.
- the user positions the dunnage bag in the appropriate void or space and then inflates the dunnage bag to the desired internal pressure using pressurized air from the pressurized air supply.
- the user opens the valve associated with the dunnage bag to enable the air from within the dunnage bag to escape, partially deflating the dunnage bag.
- the valve is then closed and the dunnage bag can be repositioned and inflated to the desired internal pressure, such as the designated operating pressure.
- the user opens the valve associated with the dunnage bag to enable the air from within the dunnage bag to escape to deflate the dunnage bag.
- dunnage bags or bag walls have been known to interfere with the valve opening, thereby impeding the escape of air for proper deflation. Additionally, certain dunnage bags, such as dunnage bags manufactured from paper, have been known to have a reduced burst pressure limit when used in connection with known valves. In certain cases, known valves lack the capability for high flow rates and/or are not reusable. Known valves also typically include complicated sealing mechanisms to prevent the leakage of air from an inflated dunnage bag.
- valve in which a seal portion is co-molded with and overmolded to the valve stem to provide a secure mechanical bond therebetween.
- the valve includes a snap fit between the valve stem and a retaining cap to provide easy assembly of the valve as well as an efficient and compact retention mechanism for a biasing spring and the valve stem in relation to the valve housing.
- the valve includes an easy-to-use opening and closing mechanism that provides tactile feedback to the user when moving the valve stem to an open position and to a closed position to inflate, deflate, or maintain air or gas pressure in the inflatable article. In one embodiment, the valve minimizes backpressure during inflation of the inflatable article.
- the valve is suitable for use with higher dunnage bag burst pressures when the dunnage bag is made from paper while maximizing the flow rate of air through the valve.
- the valve includes: (a) a housing including: (i) a flange configured to mount the valve to an inflatable article, (ii) an outer wall extending from the flange, and (iii) an annular wall extending radially inward from the outer wall and away from the outer wall in a direction of flow associated with inflation of the inflatable article; (b) a stem connected to the housing and moveable to an open position and to a closed position relative to the housing, the stem including a shaft and a base extending radially outward from the shaft and away from the shaft in the direction of flow associated with inflation of the inflatable article; (c) a spring biasing the stem toward the closed position relative to the housing; (d) a key connected to the stem and configured to retain the spring and the stem relative to the housing and to enable movement of the stem to the closed position and to the open position; and (e) a handle removably connected to the housing, the handle positionable opposite the flange to secure a wall of the inflatable article therebetween.
- a housing including
- the valve includes: (a) a housing including: (i) a flange configured to mount the valve to an inflatable article, (ii) an outer wall extending from the flange, and (iii) an annular wall extending radially inward from the outer wall and away from the outer wall in a direction of flow associated with inflation of the inflatable article; (b) a stem connected to the housing and moveable to an open position and to a closed position relative to the housing, the stem including (i) a shaft; (ii) a base extending radially outward from the shaft and away from the shaft in the direction of flow associated with inflation of the inflatable article; and (iii) one or more walls defining a first slot and one or more walls defining a second slot adjoining the first slot, the one or more walls defining the first slot permitting a first direction of motion of the stem and the one or more walls defining the second slot permitting a second different direction of motion of the stem, the one or more walls defining the first slot and the one or more walls
- the present disclosure relates to a dunnage bag including: an inflatable/deflatable body including one or more walls; and an inflation/deflation valve mounted to the body, the valve including (a) a housing including: (i) a flange configured to mount the valve to the dunnage bag, (ii) an outer wall extending from the flange, and (iii) an annular wall extending radially inward from the outer wall and away from the outer wall in a direction of flow associated with inflation of the dunnage bag; (b) a stem connected to the housing and moveable to an open position and to a closed position relative to the housing, the stem including a shaft and a base extending radially outward from the shaft and away from the shaft in the direction of flow associated with inflation of the inflatable article; (c) a spring biasing the stem toward the closed position relative to the housing; (d) a key connected to the stem and configured to retain the spring and the stem relative to the housing and to enable movement of the stem to the closed position and to the
- FIG. 1 is a top perspective view of one embodiment of a valve of the present disclosure.
- FIG. 2 is a bottom perspective view of the valve of FIG. 1 .
- FIG. 3 is a top perspective exploded view of the valve of FIG. 1 .
- FIG. 4 is a bottom perspective exploded view of the valve of FIG. 1 .
- FIG. 5 is a side cross sectional view of the valve of FIG. 1 showing the valve in a closed position.
- FIG. 6 is a side cross sectional view of the valve of FIG. 1 showing the valve in an open position.
- FIG. 7 is a top perspective section view of the valve of FIG. 1 showing the valve in a closed position.
- FIG. 8 is a top perspective section view of the valve of FIG. 1 showing the valve in an open position.
- FIG. 9 is a side section view of the valve of FIG. 1 showing the valve in an open position and showing the direction of airflow during inflation of an inflatable article.
- FIG. 10 is a top perspective view of the stem and key of the valve of FIG. 1 .
- FIG. 11 is a side elevation view of the stem and key of FIG. 10 showing the stem in a closed position relative to the valve housing.
- FIG. 12 is a side elevation view of the stem and key of FIG. 10 showing the stem in a partially open position relative to the valve housing.
- FIG. 13 is a side elevation view of the stem and key of FIG. 10 showing the stem in an open but unlocked position relative to the valve housing.
- FIG. 14 is a side elevation view of the stem and key of FIG. 10 showing the stem in an open and a first locked position relative to the valve housing.
- FIG. 15 is a side elevation view of the stem and key of FIG. 10 showing the stem in an open and a second locked position relative to the valve housing.
- FIG. 16 is a partial detail section view of the stem, key, and spring of the valve of FIG. 1 .
- FIGS. 17A and 17B illustrate top perspective and bottom perspective views of another embodiment of the handle.
- valve in which a seal portion is co-molded with and overmolded to the valve stem to provide a secure mechanical bond therebetween.
- the valve includes a snap fit between the valve stem and a retaining cap to provide easy assembly of the valve as well as an efficient and compact retention mechanism for a biasing spring and the valve stem in relation to the valve housing.
- the valve includes an easy-to-use opening and closing mechanism that provides tactile feedback to the user when moving the valve stem to an open position and to a closed position to inflate, deflate, or maintain air or gas pressure in the inflatable article. In one embodiment, the valve minimizes backpressure during inflation of the inflatable article.
- valve of the present disclosure may be used in connection with any suitable inflatable articles such as, but not limited to dunnage bags, bags other than dunnage bags, air mattresses, rafts, tires, structures, and/or boats.
- valve 10 includes: (a) housing 20 configured to mount to a dunnage bag (shown generally by numeral 70 ); (b) stem 30 connected to and moveable relative to housing 20 , and configured to open and close passage 96 for a suitable gas such as air to pass to and from an internal portion (not shown) of dunnage bag 70 ; (c) spring 40 to bias stem 30 toward a closed position relative to housing 20 ; (d) key 50 to retain spring 40 and stem 30 relative to housing 20 and to enable a user to move stem 30 to a closed position and to an open position; and (e) handle 60 to secure valve 10 to dunnage bag 70 and to enable a user to easily grip and externally manipulate valve 10 , handle 60 including cap 62 to cover and protect passage 96 to be free from dust and debris when valve 10 is not in use by the user.
- handle 60 to secure valve 10 to dunnage bag 70 and to enable a user to easily grip and externally manipulate valve 10 , handle 60 including cap 62 to cover and protect passage 96 to be free from dust and debris
- housing 20 (as best shown in FIGS. 3 to 8 ) includes: (a) flange 80 configured to be secured to a wall of dunnage bag 70 ; (b) annular protrusions 82 forming grooves 83 therebetween to receive and removably retain handle 60 to housing 20 ; (c) annular ring 84 to receive and removably retain cap 62 of handle 60 to housing 20 and to receive and removably secure an inflation device to valve 10 to inflate dunnage bag 70 ; (d) one or more walls defining aperture 86 to receive and engage with stem 30 ; (e) protrusion 88 (as best shown in FIGS.
- Housing 20 may include a plastic, such as polyethylene.
- Spring 40 may include a steel, such as a stainless steel or a corrosion resistant steel.
- annular protrusions 82 are positioned relative to flange 80 along an outer portion of outer wall 92 and are configured to receive handle 60 at any of a plurality of different locations along outer wall 92 to permit attachment of valve 10 to dunnage bag 70 .
- valve 10 can accommodate and be installed upon dunnage bag 70 having a range of wall thicknesses, including the wall thicknesses of all substrate layers associated with or used in combination with dunnage bag 70 .
- stem 30 (as best shown in FIGS. 3 to 4 and 10 to 16 ) includes: (a) shaft 120 to slidably engage with the one or more walls defining aperture 86 of housing 20 ; (b) body portion 122 ; (c) seal 124 ; (d) rib 126 ; (e) one or more walls defining slot 128 and slot 130 to receive and engage with protrusion 88 (as best shown in FIGS. 11 to 15 ); (f) chamfer 132 to engage with protrusion 88 ; (g) shoulder 136 ; and (h) head 134 configured to engage with key 50 and including (1) top portion 138 , (2) recessed body portion 140 , and (3) lip 142 .
- seal 124 is co-molded with body portion 122 via, for example, an injection molding process, thereby causing seal 124 to be integrally formed as a part of stem 30 . In this way, a secure mechanical bond is formed between seal 124 and body portion 122 of stem 30 .
- stem 30 includes a plastic, such as polypropylene.
- seal 124 is made from or includes an elastomer, such as a vulcanized elastomer or a thermoplastic vulcanizate.
- a suitable material for seal 124 is SANTOPRENE® (SANTOPRENE is a registered trademark of Monsanto Company Corporation), which is manufactured by ExxonMobil Chemical. It should be appreciated that other materials can be employed for the seal.
- Body portion 122 (as best shown in FIGS. 4, 7, 8, and 10 ) is configured in the shape of a hollow cone with an open base where rib 126 provides rigidity to body portion 122 while also permitting material savings in the manufacture of stem 30 .
- the cone of body portion 122 extends downwardly and outwardly from or near the base of shaft 120 to reduce backpressure of air flowing through valve 10 .
- the one or more walls defining slot 128 generally extend longitudinally along a portion of shaft 120 , and are configured to captively receive protrusion 88 of housing 20 .
- the one or more walls defining slot 128 are configured to permit stem 30 to longitudinally translate to enable opening and closing of valve 10 .
- the one or more walls defining slot 130 extend laterally at an angle from the one or more walls defining slot 128 to permit captive rotation of stem 30 by the one or more walls defining aperture 86 .
- the angle is approximately 90 degrees but could, in other embodiments, be a different angle.
- the one or more walls defining slot 130 are configured to enable the user to lock stem 30 into an open position relative to housing 20 to permit air to enter or escape from dunnage bag 70 .
- the one or more walls defining slot 130 are curved.
- Chamfer 132 is configured to transition stem 30 during actuation of valve 10 toward an open or toward a closed position.
- key 50 (as best shown in FIGS. 10 and 16 ) includes: (a) female portion 160 to engage with top portion 138 of head 134 ; (b) one or more walls defining aperture 162 configured to abut or lie in proximity to recessed body portion 140 ; (c) shoulder 164 configured to be overlapped by lip 142 after assembling key 50 to stem 30 to permit retention of spring 40 and stem 30 relative to housing 20 ; (d) recess 166 ; (e) annular protrusion 168 configured to abut an outer periphery of shaft 120 of stem 30 ; (f) shoulder 170 configured to abut an end coil of spring 40 to retain spring 40 relative to housing 20 ; (g) protrusions 172 oriented on a periphery of body 174 to enable a user's fingers to grip key 50 to open and close valve 10 ; and (h) bottom surface 176 configured to mate with shoulder 136 of stem 30 .
- female portion 160 provides a snap fit with top portion 138 .
- top portion 138 and female portion 160 include conical shapes to aid the assembly of female portion 160 with top portion 138 , but may, in other embodiments, have other suitable shapes.
- Key 50 may include a plastic, such as polypropylene.
- handle 60 (as best shown in FIGS. 3 and 4 ) includes: (a) cap 62 ; (b) tether 180 flexibly connecting cap 62 to body 182 ; (c) grip 184 including one or more walls defining aperture 186 ; and (d) spaced apart tabs 188 extending inwardly from aperture 190 defined by one or more walls of body 182 to removably engage with annular protrusions 82 of housing 20 .
- Handle 60 may include a plastic, such as polypropylene.
- cap 62 includes: (a) tab 200 extending from cap 62 to permit the easy removal of cap 62 from housing 20 when installed thereon; and (b) protrusions 202 extending inwardly from an inner surface of cap 62 and which are configured to engage with annular ring 84 of housing 20 to removably retain cap 62 to housing 20 .
- Protrusions 202 provide a snap fit with annular ring 84 .
- Cap 62 is configured to receive indicia on an outer surface of cap 62 . In this embodiment, the indicia is integrally formed as a part of cap 62 .
- spaced apart tabs 188 are configured to deflect upon installation of handle 60 onto housing 20 and lie at least partially in or about one or more grooves 83 and/or one or more annular protrusions 82 of housing 20 .
- Dunnage bag 70 including all plies, layers and substrates associated with a wall of dunnage bag 70 , is configured to lie between flange 80 of housing 20 and body 182 to thereby secure valve 10 to dunnage bag 70 .
- Valve 10 may be loosened from any external plies of dunnage bag 70 by removing handle 60 from housing 20 .
- valve 10 is the appropriate position for beginning the process of inflating dunnage bag 70 .
- an inflation device may be configured to press against the key to cause stem 30 to move thereby opening valve 10 .
- stem 30 moves to, but need not lock in, an open position.
- Dunnage bag 70 is then inflated to the desired pressure and the inflation device is removed from valve 10 , thus closing valve 10 .
- the angle of wall 98 of housing 20 and the angle of body portion 122 of stem 30 individually and together minimize backpressure of the flow of air through valve 10 by minimizing changes in the direction of the flowing air and by gradually changing the direction of the air when needed.
- the inflation device engages with annular ring 84 to secure the inflation device onto housing 20 .
- valve 10 When in the open position, valve 10 is configured to deflate dunnage bag 70 .
- the rotation and translation of stem 30 described above many be reversed to seat seal 124 upon seat 94 to close valve 10 .
- FIGS. 17A and 17B illustrate another embodiment of the handle, which is generally indicated by numeral 1060 .
- handle 1060 includes: (a) cap 1062 ; (b) first tether 1180 flexibly connecting cap 1062 to body 1182 ; (c) grip 1184 including one or more walls defining aperture 1186 ; (d) second tether 1181 flexibly connecting grip 1184 to body 1182 , and (e) spaced apart tabs 1188 extending inwardly from aperture 1190 defined by one or more walls of body 1182 to removably engage with annular protrusions 82 of housing 20 .
- cap 1062 includes: (a) tab 1200 extending from cap 1062 to permit the easy removal of cap 1062 from housing 20 when installed thereon; and (b) protrusions 1202 extending inwardly from an inner surface of cap 1062 and which are configured to engage with annular ring 84 of housing 20 to removably retain cap 1062 to housing 20 .
- Protrusions 1202 provide a snap fit with annular ring 84 .
- Cap 1062 is configured to receive indicia on an outer surface of cap 1062 . In this illustrated embodiment, the indicia is integrally formed as a part of cap 1062 .
Abstract
Description
- This application is a continuation of, and claims priority to and the benefit of, U.S. patent application Ser. No. 15/360,390, which was filed on Nov. 23, 2016, which is a continuation of, and claims priority to and the benefit of U.S. patent application Ser. No. 14/445,903, which was filed on Jul. 29, 2014, now U.S. Pat. No. 9,505,334, which issued on Nov. 29, 2016, which claims priority to and the benefit of U.S. Provisional Patent Application No. 61/862,216, which was filed on Aug. 5, 2013, and is now expired, the entire contents of each of which are incorporated herein by reference.
- Inflatable dunnage bags are commonly used to stabilize cargo during transportation of cargo containers (such as railroad cars and semi-trailers), thereby improving safety and reducing the likelihood of damage to the cargo. Dunnage bags are commonly inflated and deflated before and after use through valves configured for this purpose. Dunnage bags may be positioned in any voids or spaces between the cargo and/or between the cargo and the walls of the cargo container and inflated to a desired internal pressure, such as a designated operating pressure.
- To inflate a dunnage bag, the user connects a pressurized air supply to the valve, which is attached to the inflatable/deflatable body of the dunnage bag and which forms an opening in the dunnage bag. The user positions the dunnage bag in the appropriate void or space and then inflates the dunnage bag to the desired internal pressure using pressurized air from the pressurized air supply. When the dunnage bag needs to be repositioned during inflation, the user opens the valve associated with the dunnage bag to enable the air from within the dunnage bag to escape, partially deflating the dunnage bag. The valve is then closed and the dunnage bag can be repositioned and inflated to the desired internal pressure, such as the designated operating pressure. When the dunnage bag needs to be removed from its position between the cargo or between the cargo and the walls of the cargo container to enable the cargo to be offloaded from the cargo container, the user opens the valve associated with the dunnage bag to enable the air from within the dunnage bag to escape to deflate the dunnage bag.
- During inflation, the pressure inside the dunnage bag is significantly lower than the pressure upstream of the valve due to backpressure caused by the valve itself. During deflation, dunnage bags or bag walls have been known to interfere with the valve opening, thereby impeding the escape of air for proper deflation. Additionally, certain dunnage bags, such as dunnage bags manufactured from paper, have been known to have a reduced burst pressure limit when used in connection with known valves. In certain cases, known valves lack the capability for high flow rates and/or are not reusable. Known valves also typically include complicated sealing mechanisms to prevent the leakage of air from an inflated dunnage bag.
- Accordingly, there is a need for a new and improved valve that solves these problems, and for new and improved dunnage bags having such new and improved valves.
- Various embodiments of the present disclosure provide a reusable valve in which a seal portion is co-molded with and overmolded to the valve stem to provide a secure mechanical bond therebetween. In one embodiment, the valve includes a snap fit between the valve stem and a retaining cap to provide easy assembly of the valve as well as an efficient and compact retention mechanism for a biasing spring and the valve stem in relation to the valve housing. In one embodiment, the valve includes an easy-to-use opening and closing mechanism that provides tactile feedback to the user when moving the valve stem to an open position and to a closed position to inflate, deflate, or maintain air or gas pressure in the inflatable article. In one embodiment, the valve minimizes backpressure during inflation of the inflatable article. In one embodiment in which the valve is employed to inflate and deflate a dunnage bag, the valve is suitable for use with higher dunnage bag burst pressures when the dunnage bag is made from paper while maximizing the flow rate of air through the valve. This solves the above problems.
- More specifically, in one embodiment, the valve includes: (a) a housing including: (i) a flange configured to mount the valve to an inflatable article, (ii) an outer wall extending from the flange, and (iii) an annular wall extending radially inward from the outer wall and away from the outer wall in a direction of flow associated with inflation of the inflatable article; (b) a stem connected to the housing and moveable to an open position and to a closed position relative to the housing, the stem including a shaft and a base extending radially outward from the shaft and away from the shaft in the direction of flow associated with inflation of the inflatable article; (c) a spring biasing the stem toward the closed position relative to the housing; (d) a key connected to the stem and configured to retain the spring and the stem relative to the housing and to enable movement of the stem to the closed position and to the open position; and (e) a handle removably connected to the housing, the handle positionable opposite the flange to secure a wall of the inflatable article therebetween.
- In another embodiment, the valve includes: (a) a housing including: (i) a flange configured to mount the valve to an inflatable article, (ii) an outer wall extending from the flange, and (iii) an annular wall extending radially inward from the outer wall and away from the outer wall in a direction of flow associated with inflation of the inflatable article; (b) a stem connected to the housing and moveable to an open position and to a closed position relative to the housing, the stem including (i) a shaft; (ii) a base extending radially outward from the shaft and away from the shaft in the direction of flow associated with inflation of the inflatable article; and (iii) one or more walls defining a first slot and one or more walls defining a second slot adjoining the first slot, the one or more walls defining the first slot permitting a first direction of motion of the stem and the one or more walls defining the second slot permitting a second different direction of motion of the stem, the one or more walls defining the first slot and the one or more walls of the second slot configured to receive a protrusion connected to the housing; (c) a spring biasing the stem toward the closed position relative to the housing; (d) a key snap fit with the stem and abutting the spring to retain the spring and the stem relative to the housing, the key configured to enable movement of the stem to the closed position and to the open position; and (e) a handle removably connected to the housing, the handle positionable opposite the flange to secure a wall of the inflatable article therebetween.
- In another embodiment, the present disclosure relates to a dunnage bag including: an inflatable/deflatable body including one or more walls; and an inflation/deflation valve mounted to the body, the valve including (a) a housing including: (i) a flange configured to mount the valve to the dunnage bag, (ii) an outer wall extending from the flange, and (iii) an annular wall extending radially inward from the outer wall and away from the outer wall in a direction of flow associated with inflation of the dunnage bag; (b) a stem connected to the housing and moveable to an open position and to a closed position relative to the housing, the stem including a shaft and a base extending radially outward from the shaft and away from the shaft in the direction of flow associated with inflation of the inflatable article; (c) a spring biasing the stem toward the closed position relative to the housing; (d) a key connected to the stem and configured to retain the spring and the stem relative to the housing and to enable movement of the stem to the closed position and to the open position; and (e) a handle removably connected to the housing, the handle positionable opposite the flange to secure one of the one or more walls of the dunnage bag therebetween.
- Additional features and advantages of the present disclosure are described in, and will be apparent from, the following Detailed Description and the Figures.
-
FIG. 1 is a top perspective view of one embodiment of a valve of the present disclosure. -
FIG. 2 is a bottom perspective view of the valve ofFIG. 1 . -
FIG. 3 is a top perspective exploded view of the valve ofFIG. 1 . -
FIG. 4 is a bottom perspective exploded view of the valve ofFIG. 1 . -
FIG. 5 is a side cross sectional view of the valve ofFIG. 1 showing the valve in a closed position. -
FIG. 6 is a side cross sectional view of the valve ofFIG. 1 showing the valve in an open position. -
FIG. 7 is a top perspective section view of the valve ofFIG. 1 showing the valve in a closed position. -
FIG. 8 is a top perspective section view of the valve ofFIG. 1 showing the valve in an open position. -
FIG. 9 is a side section view of the valve ofFIG. 1 showing the valve in an open position and showing the direction of airflow during inflation of an inflatable article. -
FIG. 10 is a top perspective view of the stem and key of the valve ofFIG. 1 . -
FIG. 11 is a side elevation view of the stem and key ofFIG. 10 showing the stem in a closed position relative to the valve housing. -
FIG. 12 is a side elevation view of the stem and key ofFIG. 10 showing the stem in a partially open position relative to the valve housing. -
FIG. 13 is a side elevation view of the stem and key ofFIG. 10 showing the stem in an open but unlocked position relative to the valve housing. -
FIG. 14 is a side elevation view of the stem and key ofFIG. 10 showing the stem in an open and a first locked position relative to the valve housing. -
FIG. 15 is a side elevation view of the stem and key ofFIG. 10 showing the stem in an open and a second locked position relative to the valve housing. -
FIG. 16 is a partial detail section view of the stem, key, and spring of the valve ofFIG. 1 . -
FIGS. 17A and 17B illustrate top perspective and bottom perspective views of another embodiment of the handle. - Various embodiments of the present disclosure provide a reusable valve in which a seal portion is co-molded with and overmolded to the valve stem to provide a secure mechanical bond therebetween. In one embodiment, the valve includes a snap fit between the valve stem and a retaining cap to provide easy assembly of the valve as well as an efficient and compact retention mechanism for a biasing spring and the valve stem in relation to the valve housing. In one embodiment, the valve includes an easy-to-use opening and closing mechanism that provides tactile feedback to the user when moving the valve stem to an open position and to a closed position to inflate, deflate, or maintain air or gas pressure in the inflatable article. In one embodiment, the valve minimizes backpressure during inflation of the inflatable article.
- It should be appreciated that the valve of the present disclosure may be used in connection with any suitable inflatable articles such as, but not limited to dunnage bags, bags other than dunnage bags, air mattresses, rafts, tires, structures, and/or boats.
- Referring now to the drawings,
FIGS. 1 to 16 illustrate one embodiment of the valve of the present disclosure, which is generally indicated bynumeral 10, being used in connection with a dunnage bag. In this embodiment,valve 10 includes: (a)housing 20 configured to mount to a dunnage bag (shown generally by numeral 70); (b)stem 30 connected to and moveable relative tohousing 20, and configured to open andclose passage 96 for a suitable gas such as air to pass to and from an internal portion (not shown) ofdunnage bag 70; (c)spring 40 to biasstem 30 toward a closed position relative tohousing 20; (d)key 50 to retainspring 40 and stem 30 relative tohousing 20 and to enable a user to movestem 30 to a closed position and to an open position; and (e) handle 60 to securevalve 10 todunnage bag 70 and to enable a user to easily grip and externally manipulatevalve 10, handle 60 includingcap 62 to cover and protectpassage 96 to be free from dust and debris whenvalve 10 is not in use by the user. - In this embodiment, housing 20 (as best shown in
FIGS. 3 to 8 ) includes: (a)flange 80 configured to be secured to a wall ofdunnage bag 70; (b)annular protrusions 82 forminggrooves 83 therebetween to receive and removably retainhandle 60 tohousing 20; (c)annular ring 84 to receive and removably retaincap 62 ofhandle 60 to housing 20 and to receive and removably secure an inflation device tovalve 10 to inflatedunnage bag 70; (d) one or morewalls defining aperture 86 to receive and engage withstem 30; (e) protrusion 88 (as best shown inFIGS. 11 to 15 ) extending radially inward from the one or morewalls defining aperture 86 and configured to slidably engage with a receiving portion ofstem 30 to permit a user to movestem 30 to an open position and to a closed position; (f) a plurality of supports 90 (as best shown inFIGS. 1, 5 and 6 ) configured to support the one or morewalls defining aperture 86 relative toouter wall 92; (g)seat 94 configured to mate withstem 30 toseal valve 10 when in the closed position; (h)wall 98 extending inwardly and downwardly away from opening 102 ofouter wall 92 to formaperture 100 to reduce backpressure of air flowing throughvalve 10; and (i)standoffs 104 extending from a bottom surface offlange 80 to help preventdunnage bag 70 from sealing itself to the bottom ofvalve 10 thereby facilitating easier deflation ofdunnage bag 70.Housing 20 may include a plastic, such as polyethylene.Spring 40 may include a steel, such as a stainless steel or a corrosion resistant steel. - In this embodiment,
annular protrusions 82 are positioned relative toflange 80 along an outer portion ofouter wall 92 and are configured to receivehandle 60 at any of a plurality of different locations alongouter wall 92 to permit attachment ofvalve 10 todunnage bag 70. In this way,valve 10 can accommodate and be installed upondunnage bag 70 having a range of wall thicknesses, including the wall thicknesses of all substrate layers associated with or used in combination withdunnage bag 70. - In this embodiment, stem 30 (as best shown in
FIGS. 3 to 4 and 10 to 16 ) includes: (a)shaft 120 to slidably engage with the one or morewalls defining aperture 86 ofhousing 20; (b)body portion 122; (c)seal 124; (d)rib 126; (e) one or morewalls defining slot 128 andslot 130 to receive and engage with protrusion 88 (as best shown inFIGS. 11 to 15 ); (f) chamfer 132 to engage withprotrusion 88; (g)shoulder 136; and (h)head 134 configured to engage with key 50 and including (1)top portion 138, (2) recessedbody portion 140, and (3)lip 142. In one embodiment,seal 124 is co-molded withbody portion 122 via, for example, an injection molding process, thereby causingseal 124 to be integrally formed as a part ofstem 30. In this way, a secure mechanical bond is formed betweenseal 124 andbody portion 122 ofstem 30. In one embodiment, stem 30 includes a plastic, such as polypropylene. In one embodiment,seal 124 is made from or includes an elastomer, such as a vulcanized elastomer or a thermoplastic vulcanizate. For example, a suitable material forseal 124 is SANTOPRENE® (SANTOPRENE is a registered trademark of Monsanto Company Corporation), which is manufactured by ExxonMobil Chemical. It should be appreciated that other materials can be employed for the seal. - Body portion 122 (as best shown in
FIGS. 4, 7, 8, and 10 ) is configured in the shape of a hollow cone with an open base whererib 126 provides rigidity tobody portion 122 while also permitting material savings in the manufacture ofstem 30. The cone ofbody portion 122 extends downwardly and outwardly from or near the base ofshaft 120 to reduce backpressure of air flowing throughvalve 10. The one or morewalls defining slot 128 generally extend longitudinally along a portion ofshaft 120, and are configured to captively receiveprotrusion 88 ofhousing 20. The one or morewalls defining slot 128 are configured to permitstem 30 to longitudinally translate to enable opening and closing ofvalve 10. The one or morewalls defining slot 130 extend laterally at an angle from the one or morewalls defining slot 128 to permit captive rotation ofstem 30 by the one or morewalls defining aperture 86. In this embodiment, the angle is approximately 90 degrees but could, in other embodiments, be a different angle. The one or morewalls defining slot 130 are configured to enable the user to lockstem 30 into an open position relative tohousing 20 to permit air to enter or escape fromdunnage bag 70. In one embodiment, the one or morewalls defining slot 130 are curved.Chamfer 132 is configured to transitionstem 30 during actuation ofvalve 10 toward an open or toward a closed position. - In this embodiment, key 50 (as best shown in
FIGS. 10 and 16 ) includes: (a)female portion 160 to engage withtop portion 138 ofhead 134; (b) one or morewalls defining aperture 162 configured to abut or lie in proximity to recessedbody portion 140; (c)shoulder 164 configured to be overlapped bylip 142 after assembling key 50 to stem 30 to permit retention ofspring 40 and stem 30 relative tohousing 20; (d) recess 166; (e)annular protrusion 168 configured to abut an outer periphery ofshaft 120 ofstem 30; (f)shoulder 170 configured to abut an end coil ofspring 40 to retainspring 40 relative tohousing 20; (g)protrusions 172 oriented on a periphery ofbody 174 to enable a user's fingers to grip key 50 to open andclose valve 10; and (h)bottom surface 176 configured to mate withshoulder 136 ofstem 30. In this embodiment,female portion 160 provides a snap fit withtop portion 138. In this embodiment,top portion 138 andfemale portion 160 include conical shapes to aid the assembly offemale portion 160 withtop portion 138, but may, in other embodiments, have other suitable shapes.Key 50 may include a plastic, such as polypropylene. - In this embodiment, handle 60 (as best shown in
FIGS. 3 and 4 ) includes: (a)cap 62; (b)tether 180 flexibly connectingcap 62 tobody 182; (c)grip 184 including one or morewalls defining aperture 186; and (d) spaced aparttabs 188 extending inwardly fromaperture 190 defined by one or more walls ofbody 182 to removably engage withannular protrusions 82 ofhousing 20.Handle 60 may include a plastic, such as polypropylene. - In this embodiment,
cap 62 includes: (a)tab 200 extending fromcap 62 to permit the easy removal ofcap 62 fromhousing 20 when installed thereon; and (b)protrusions 202 extending inwardly from an inner surface ofcap 62 and which are configured to engage withannular ring 84 ofhousing 20 to removably retaincap 62 tohousing 20.Protrusions 202 provide a snap fit withannular ring 84.Cap 62 is configured to receive indicia on an outer surface ofcap 62. In this embodiment, the indicia is integrally formed as a part ofcap 62. - In this embodiment, spaced apart
tabs 188 are configured to deflect upon installation ofhandle 60 ontohousing 20 and lie at least partially in or about one ormore grooves 83 and/or one or moreannular protrusions 82 ofhousing 20.Dunnage bag 70, including all plies, layers and substrates associated with a wall ofdunnage bag 70, is configured to lie betweenflange 80 ofhousing 20 andbody 182 to therebysecure valve 10 todunnage bag 70.Valve 10 may be loosened from any external plies ofdunnage bag 70 by removinghandle 60 fromhousing 20. - In this embodiment, the closed position of
valve 10 is the appropriate position for beginning the process of inflatingdunnage bag 70. In this embodiment, an inflation device may be configured to press against the key to causestem 30 to move thereby openingvalve 10. In this embodiment, stem 30 moves to, but need not lock in, an open position.Dunnage bag 70 is then inflated to the desired pressure and the inflation device is removed fromvalve 10, thus closingvalve 10. During inflation, the angle ofwall 98 ofhousing 20 and the angle ofbody portion 122 ofstem 30 individually and together minimize backpressure of the flow of air throughvalve 10 by minimizing changes in the direction of the flowing air and by gradually changing the direction of the air when needed. In one embodiment, the inflation device engages withannular ring 84 to secure the inflation device ontohousing 20. - To
open valve 10 when initially in the closed position to at least partially deflatedunnage bag 70, a user would grip key 50 and potentially protrusions 172 and push against the force provided byspring 40 in a direction of travel provided by the one or morewalls defining aperture 86 and the combination ofprotrusion 88 and the one or morewalls defining slot 128. To positionstem 30 in a self sustaining open position, a user would, in addition to pushing againstspring 40, rotate key 50 and therefore stem 30 in a direction of travel provided by the combination ofprotrusion 88 and the one or morewalls defining slot 130. The user would rotate key 50 and therefore stem 30 in a counter-clockwise manner at least until the tension ofspring 40 is taken up by the one or morewalls defining slot 130.Chamfer 132 helps guideprotrusion 88 toward thewalls defining slot 130 when openingvalve 10 and away from thewalls defining slot 130 when closingvalve 10. When in the open position,valve 10 is configured to deflatedunnage bag 70. The rotation and translation ofstem 30 described above many be reversed toseat seal 124 uponseat 94 to closevalve 10. -
FIGS. 17A and 17B illustrate another embodiment of the handle, which is generally indicated by numeral 1060. In this embodiment, handle 1060 includes: (a)cap 1062; (b)first tether 1180 flexibly connectingcap 1062 tobody 1182; (c)grip 1184 including one or morewalls defining aperture 1186; (d)second tether 1181 flexibly connectinggrip 1184 tobody 1182, and (e) spaced aparttabs 1188 extending inwardly fromaperture 1190 defined by one or more walls ofbody 1182 to removably engage withannular protrusions 82 ofhousing 20. - In this illustrated embodiment,
cap 1062 includes: (a)tab 1200 extending fromcap 1062 to permit the easy removal ofcap 1062 fromhousing 20 when installed thereon; and (b)protrusions 1202 extending inwardly from an inner surface ofcap 1062 and which are configured to engage withannular ring 84 ofhousing 20 to removably retaincap 1062 tohousing 20.Protrusions 1202 provide a snap fit withannular ring 84.Cap 1062 is configured to receive indicia on an outer surface ofcap 1062. In this illustrated embodiment, the indicia is integrally formed as a part ofcap 1062. - It should be appreciated that the embodiment of the valve illustrated in the accompanying Figures employs one example configuration of components and one example size and shape of each of the components. It should be appreciated that other embodiments of the valve may employ different configurations of the components and/or components of different sizes or shapes.
- It should be understood that modifications and variations may be effected without departing from the scope of the novel concepts of the present disclosure, and it should be understood that this application is to be limited only by the scope of the appended claims.
Claims (20)
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- 2014-07-31 MX MX2016001495A patent/MX2016001495A/en active IP Right Grant
- 2014-07-31 EP EP14752522.4A patent/EP3030458B1/en active Active
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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US10781929B2 (en) | 2017-10-27 | 2020-09-22 | Stopak India Pvt. Ltd. | Valve |
US11454331B2 (en) | 2019-12-18 | 2022-09-27 | Form Create Llc | Valve cap assembly |
Also Published As
Publication number | Publication date |
---|---|
CN105408167A (en) | 2016-03-16 |
CN108662215A (en) | 2018-10-16 |
EP3030458A2 (en) | 2016-06-15 |
CA2917598A1 (en) | 2015-02-12 |
CN108662215B (en) | 2020-12-01 |
US20150037113A1 (en) | 2015-02-05 |
CA2917598C (en) | 2018-02-27 |
ES2773253T3 (en) | 2020-07-10 |
WO2015020872A3 (en) | 2015-04-16 |
CN105408167B (en) | 2018-06-08 |
US10161537B2 (en) | 2018-12-25 |
WO2015020872A2 (en) | 2015-02-12 |
EP3030458B1 (en) | 2019-12-18 |
US20170074411A1 (en) | 2017-03-16 |
MX2016001495A (en) | 2016-11-15 |
US9505334B2 (en) | 2016-11-29 |
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