US20200208449A1 - Pressure relief latch - Google Patents
Pressure relief latch Download PDFInfo
- Publication number
- US20200208449A1 US20200208449A1 US16/797,306 US202016797306A US2020208449A1 US 20200208449 A1 US20200208449 A1 US 20200208449A1 US 202016797306 A US202016797306 A US 202016797306A US 2020208449 A1 US2020208449 A1 US 2020208449A1
- Authority
- US
- United States
- Prior art keywords
- bolt
- housing
- latch
- slot
- pin
- 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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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
- E05C19/00—Other devices specially designed for securing wings, e.g. with suction cups
- E05C19/02—Automatic catches, i.e. released by pull or pressure on the wing
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
- E05C19/00—Other devices specially designed for securing wings, e.g. with suction cups
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D29/00—Power-plant nacelles, fairings, or cowlings
- B64D29/06—Attaching of nacelles, fairings or cowlings
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
- E05B15/04—Spring arrangements in locks
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B51/00—Operating or controlling locks or other fastening devices by other non-mechanical means
- E05B51/02—Operating or controlling locks or other fastening devices by other non-mechanical means by pneumatic or hydraulic means
- E05B51/023—Operating or controlling locks or other fastening devices by other non-mechanical means by pneumatic or hydraulic means actuated in response to external pressure, blast or explosion
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
- E05B15/04—Spring arrangements in locks
- E05B2015/0448—Units of springs; Two or more springs working together
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
- E05C3/00—Fastening devices with bolts moving pivotally or rotatively
- E05C3/12—Fastening devices with bolts moving pivotally or rotatively with latching action
- E05C3/16—Fastening devices with bolts moving pivotally or rotatively with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch
- E05C3/22—Fastening devices with bolts moving pivotally or rotatively with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch the bolt being spring controlled
- E05C3/24—Fastening devices with bolts moving pivotally or rotatively with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch the bolt being spring controlled in the form of a bifurcated member
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- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S292/00—Closure fasteners
- Y10S292/31—Lever operator, flush
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S292/00—Closure fasteners
- Y10S292/49—Toggle catches
-
- 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
- Y10T292/00—Closure fasteners
- Y10T292/20—Clamps
- Y10T292/205—Ring
- Y10T292/212—With expanding or contracting means
- Y10T292/216—Toggle lever
Definitions
- the present invention relates to latches and, more particularly, pressure relief latches.
- Removable and moveable elements installed on exterior surfaces of aerospace vehicles such as hatches, doors, access panels, engine cowlings, nacelles, and radomes employ latches. What is desirable is a latch that can be opened or closed manually or it can be opened automatically when a defined load is reached.
- a latch in an embodiment, includes a housing having a first end, a second end opposite the first end, first and second side members, each of which includes an outer surface, an inner surface, and an elongated slot extending from the outer surface to the inner surface and between the first and second ends, the first and second side members forming a space between the inner surfaces thereof, a base portion positioned at the second end and including first and second coves, each of which is positioned adjacent to an outer surface of a corresponding one of the first and second side members, the base portion including a first slot located intermediate the first and second coves and extending to the space, and a mounting portion positioned at the first end and including a second slot and extending to the space; a bolt mounted rotatably to the housing proximate to the first end thereof and positioned between the first and second side members of the housing, the bolt including a curvilinear portion, a first end located on the curvilinear portion, a linear portion, and a second end located on the linear portion, the bolt
- the bolt includes a notch formed within the linear portion thereof and adjacent to one end of the curvilinear portion, and wherein the bolt notch is adapted to receive the pin and roller when the bolt is in its first position.
- the bolt is mounted rotatably to the housing by a rivet.
- the bolt includes a slot formed within the first end of the bolt and a torsion spring positioned on the rivet and within the slot of the bolt.
- the trigger is mounted to the housing by a rivet.
- the latch is adapted to be operated manually by providing a force on the first end of the trigger to rotate the trigger from its first position to its second position, thereby disengaging the pin and roller away from the bolt notch of the bolt.
- the bolt is retained in its second position by the torsion spring.
- the bolt is adapted to be rotated from its second position to its first position by providing pressure on the first end of the bolt and rotating the bolt to make contact with the pin and roller and pushing to pin and roller away until the pin and roller engages the notch of the bolt.
- the bolt is adapted to be rotated from its first position to its second position when a defined load is provided on the first end of the bolt, such that the bolt pushes the pin and roller in the elongated slots of the side members of the housing and loaded by the compression springs.
- the bolt is retained in its second position by the torsion spring.
- the bolt is adapted to be rotated from its second position to its first position by providing pressure on the first end of the bolt and rotating the bolt to make contact with the pin and roller and pushing to pin and roller away until the pin and roller engages the notch of the bolt.
- a latch in another embodiment, includes a housing having a first end, a second end opposite the first end, first and second side members, each of which includes an outer surface, an inner surface, and an elongated slot extending from the outer surface to the inner surface and between the first and second ends, the first and second side members forming a space between the inner surfaces thereof, a base portion positioned at the second end and including first and second coves, each of which is positioned adjacent to an outer surface of a corresponding one of the first and second side members, the base portion including a first slot located intermediate the first and second coves and extending to the space, and a mounting portion positioned at the first end and including a second slot extending to the space; a bolt mounted rotatably to the housing proximate to the first end thereof and positioned between the first and second side members of the housing, the bolt including a curvilinear portion, a first end located on the curvilinear portion, a linear portion, and a second end located on the linear portion, the bolt being
- FIG. 1 is a top perspective view of an embodiment of a pressure relief latch shown in a closed position
- FIG. 2 is a bottom perspective view of the pressure relief latch shown in FIG. 1 ;
- FIG. 3 is a side cross-sectional view of the pressure relief latch shown in FIG. 1 ;
- FIG. 4 is a top perspective view of the pressure relief latch shown in FIG. 1 , showing areas for opening the latch from its closed position;
- FIG. 5 is a top perspective view of the pressure relief latch shown in FIGS. 1 through 3 , with the latch shown in an open position;
- FIG. 6 is a side cross-sectional view of the pressure relief latch shown in FIG. 5 ;
- FIG. 7 is a side cross-sectional view of the pressure relief latch shown in FIG. 2 , with a trigger employed by the latch shown in a depressed position.
- a pressure relief latch 10 includes a housing 12 having a first end 14 and a second end 16 opposite the first end 14 .
- the housing 12 includes first and second side members 18 , 20 , each of which extends from the first end 14 to the second end 16 and includes an outer surface 21 , an inner surface 23 opposite the outer surface 21 , and an elongated slot 22 extending from the outer surface 21 to the inner surface 23 and intermediate the first and second ends 14 , 16 .
- Each of the side members 18 , 20 further includes a tab 24 having a first hole 26 extending from the outer surface 21 to the inner surface 23 and a second hole 28 located proximate to the first end 14 and extending from the outer surface 21 to the inner surface 23 .
- the housing 12 further includes a base portion 32 formed at the second end 16 thereof.
- the base portion 32 includes first and second coves 34 , 36 each of which is positioned adjacent to the outer surface 21 of a corresponding one of the first and second side members 18 , 20 .
- the base portion 32 further includes a slot 38 located intermediate the coves 34 , 36 and extending from an upper surface 39 of the base portion 32 to the space 30 .
- the slot 38 is substantially rectangular in shape.
- the housing 12 further includes a mounting portion 40 having a slot 42 that extends from an upper surface 43 of the mounting portion 40 to the space 30 , and a plurality of mounting holes 44 .
- the slot 42 is substantially rectangular in shape.
- the pressure relief latch 10 includes a bolt 46 .
- the bolt 46 is J-shaped. In other embodiments, the bolt 46 can have a U-shape or any other suitable shape.
- the bolt 46 includes a first end 48 located on an arcuate/curvilinear portion 50 and a second end 52 located on a linear portion 54 .
- the bolt 46 includes a bolt notch 56 formed within the linear portion 54 and adjacent to one end of the curvilinear portion 50 .
- a slot 58 is formed within the first end 48 of the bolt 46 .
- the bolt 46 is mounted rotatably to the housing 12 such that the first end 48 of the bolt 46 is mounted to the first end 14 of the housing 12 by a rivet 60 a , which is inserted within the hole 28 .
- the linear portion 54 of the bolt 46 extends through the space 30 when the bolt 46 is in a first position, and the second end 52 of the bolt 46 extends through and protrudes from the slot 42 of the mounting portion 40 when the bolt 46 is in its first position.
- a torsion spring 62 is positioned on the rivet 60 a and within the slot 58 of the bolt 46 .
- the pressure relief latch 10 includes a trigger 64 .
- the trigger 64 is substantially “Z” in shape. In other embodiments, the trigger 64 includes other suitable shapes and sizes.
- the trigger 64 includes a first end 66 and a second end 68 .
- the second end 68 of the trigger 64 includes trigger slot 70 and a hole 72 (see FIG. 3 ).
- the trigger 64 is mounted rotatably to the housing 12 such that the second end 68 of the trigger 64 is mounted to the holes 26 of the tabs 24 of the housing 12 by another rivet 60 b extending through the hole 72 , and a pin 74 having a roller 76 mounted thereon extending through the trigger slot 70 and the elongated slots 22 of the side members 18 , 20 .
- the first end 66 of the trigger 64 extends through and protrudes from the slot 38 of the base portion 32 .
- the pin 74 and the roller 76 combination are sized and shaped to engage the bolt notch 56 of the bolt 46 when the latch 10 is in its closed position.
- the pressure relief latch 10 includes first and second compression springs 78 , 80 each of which is positioned within a corresponding one of the coves 34 , 36 of the base portion 32 of the housing 12 .
- One end of each of the springs 78 , 80 is positioned against a rear interior portion 81 of a corresponding one of the coves 34 , 36 of the base portion 32 , while the other end of each of the springs 78 , 80 includes a corresponding side cap 82 mounted thereon, which receives the pin 74 and the roller 76 combination.
- FIG. 4 shows the areas on the latch 10 where it can be opened. That is, the latch 10 can be opened manually by a human finger (or other implement) on the first end 66 of the trigger 64 , or it can be opened automatically when a defined load is reached on the first end 48 on the bolt 46 .
- the latch 10 may be opened from its first, closed position to its second, open position under a defined load.
- a “defined load” when pressure builds up and reaches a defined pressure inside an engine compartment, the latch 10 pushes the engine compartment door open to release the pressure.
- the bolt 46 rotates clockwise and pushes the roller 76 , which is guided by the pin 74 , in the elongated slots 22 of the side members 18 , 20 of the housing 12 toward the second end 16 of the housing 12 , and loaded by the compression springs 78 , 80 away until the bolt 46 disengages the bolt notch 56 and stops.
- the bolt 46 is retained in its open position under the load of the torsion spring 62 acting thereon.
- the trigger slot 70 allows the pin 74 and the roller 76 to move only in one direction, which is a direction away from the bolt 46 and toward the second end 16 of the housing 12 .
- the latch 10 may be opened from its first, closed position to its second, open position manually. From its closed position, the latch 10 can be opened by finger pressure on the first end 66 of the trigger 64 , which pivots about the rivet 60 b and rotates counterclockwise. In this regard, the trigger 64 pulls the pin 74 and roller 76 away from the bolt notch 56 of the bolt 46 until they disengage one another, thereby enabling the bolt 46 to automatically rotate clockwise under the load of the torsion spring 62 and is retained in open position.
- the latch 10 can be closed manually by finger pressure on the second end 52 of the bolt 46 , which pivots about the rivet 60 a to rotate counterclockwise.
- the bolt 46 pushes the pin 74 and roller 76 away until the roller 76 engages the bolt notch 56 of the bolt 46 .
- the bolt 46 is then retained in closed position.
Abstract
Description
- This application is a continuation of U.S. patent application Ser. No. 15/224,026, filed Jul. 29, 2016, which is a Section 111(a) application relating to and claiming the benefit of commonly-owned, U.S. Provisional Patent Application Ser. No. 62/200,971, filed Aug. 4, 2015, entitled “PRESSURE RELIEF LATCH,” the content of each of which is incorporated herein by reference in its entirety.
- The present invention relates to latches and, more particularly, pressure relief latches.
- Removable and moveable elements installed on exterior surfaces of aerospace vehicles, such as hatches, doors, access panels, engine cowlings, nacelles, and radomes employ latches. What is desirable is a latch that can be opened or closed manually or it can be opened automatically when a defined load is reached.
- In an embodiment, a latch includes a housing having a first end, a second end opposite the first end, first and second side members, each of which includes an outer surface, an inner surface, and an elongated slot extending from the outer surface to the inner surface and between the first and second ends, the first and second side members forming a space between the inner surfaces thereof, a base portion positioned at the second end and including first and second coves, each of which is positioned adjacent to an outer surface of a corresponding one of the first and second side members, the base portion including a first slot located intermediate the first and second coves and extending to the space, and a mounting portion positioned at the first end and including a second slot and extending to the space; a bolt mounted rotatably to the housing proximate to the first end thereof and positioned between the first and second side members of the housing, the bolt including a curvilinear portion, a first end located on the curvilinear portion, a linear portion, and a second end located on the linear portion, the bolt being moveable rotatably between a first position, in which the linear portion of the bolt extends through the space and the second end of the bolt extends through and protrudes from the second slot of the mounting portion of the housing, and a second position, in which the curvilinear portion of the bolt extends through and protrudes from the second slot and the linear portion is positioned external of the second slot; a trigger mounted rotatably to the housing, the trigger including a first end protruding from the first slot of the base portion of the housing, a second end, and a trigger slot formed within the second end of the trigger; first and second compression springs, one of which is positioned within the first cove of the housing and the other of which is positioned within the second cove of the housing, each of the first and second compression springs including an end cap; and a pin and roller extending through the end caps of the first and second compression springs and the trigger slot of the trigger, the pin and roller being positioned slidably within the elongated slots of the first and second side members of the housing, wherein the trigger is moveable between a first position, in which the pin and roller is engaged with the bolt when the bolt is in its first position, and a second position, in which the pin and roller is disengaged from the bolt.
- In an embodiment, the bolt includes a notch formed within the linear portion thereof and adjacent to one end of the curvilinear portion, and wherein the bolt notch is adapted to receive the pin and roller when the bolt is in its first position. In an embodiment, the bolt is mounted rotatably to the housing by a rivet. In an embodiment, the bolt includes a slot formed within the first end of the bolt and a torsion spring positioned on the rivet and within the slot of the bolt. In an embodiment, the trigger is mounted to the housing by a rivet. In an embodiment, the latch is adapted to be operated manually by providing a force on the first end of the trigger to rotate the trigger from its first position to its second position, thereby disengaging the pin and roller away from the bolt notch of the bolt. In an embodiment, the bolt is retained in its second position by the torsion spring. In an embodiment, the bolt is adapted to be rotated from its second position to its first position by providing pressure on the first end of the bolt and rotating the bolt to make contact with the pin and roller and pushing to pin and roller away until the pin and roller engages the notch of the bolt. In an embodiment, the bolt is adapted to be rotated from its first position to its second position when a defined load is provided on the first end of the bolt, such that the bolt pushes the pin and roller in the elongated slots of the side members of the housing and loaded by the compression springs. In an embodiment, the bolt is retained in its second position by the torsion spring. In an embodiment, the bolt is adapted to be rotated from its second position to its first position by providing pressure on the first end of the bolt and rotating the bolt to make contact with the pin and roller and pushing to pin and roller away until the pin and roller engages the notch of the bolt.
- In another embodiment, a latch includes a housing having a first end, a second end opposite the first end, first and second side members, each of which includes an outer surface, an inner surface, and an elongated slot extending from the outer surface to the inner surface and between the first and second ends, the first and second side members forming a space between the inner surfaces thereof, a base portion positioned at the second end and including first and second coves, each of which is positioned adjacent to an outer surface of a corresponding one of the first and second side members, the base portion including a first slot located intermediate the first and second coves and extending to the space, and a mounting portion positioned at the first end and including a second slot extending to the space; a bolt mounted rotatably to the housing proximate to the first end thereof and positioned between the first and second side members of the housing, the bolt including a curvilinear portion, a first end located on the curvilinear portion, a linear portion, and a second end located on the linear portion, the bolt being moveable rotatably between a first position, in which the linear portion of the bolt extends through the space and the second end of the bolt extends through and protrudes from the second slot of the mounting portion of the housing, and a second position, in which the curvilinear portion of the bolt extends through and protrudes from the second slot and the linear portion is positioned external of the second slot; and a pin and roller positioned slidably within the elongated slots of the first and second side members of the housing.
-
FIG. 1 is a top perspective view of an embodiment of a pressure relief latch shown in a closed position; -
FIG. 2 is a bottom perspective view of the pressure relief latch shown inFIG. 1 ; -
FIG. 3 is a side cross-sectional view of the pressure relief latch shown inFIG. 1 ; -
FIG. 4 is a top perspective view of the pressure relief latch shown inFIG. 1 , showing areas for opening the latch from its closed position; -
FIG. 5 is a top perspective view of the pressure relief latch shown inFIGS. 1 through 3 , with the latch shown in an open position; -
FIG. 6 is a side cross-sectional view of the pressure relief latch shown inFIG. 5 ; and -
FIG. 7 is a side cross-sectional view of the pressure relief latch shown inFIG. 2 , with a trigger employed by the latch shown in a depressed position. - Referring to
FIGS. 1 through 3 , in an embodiment, apressure relief latch 10 includes ahousing 12 having afirst end 14 and asecond end 16 opposite thefirst end 14. Thehousing 12 includes first andsecond side members first end 14 to thesecond end 16 and includes anouter surface 21, aninner surface 23 opposite theouter surface 21, and anelongated slot 22 extending from theouter surface 21 to theinner surface 23 and intermediate the first andsecond ends side members tab 24 having afirst hole 26 extending from theouter surface 21 to theinner surface 23 and asecond hole 28 located proximate to thefirst end 14 and extending from theouter surface 21 to theinner surface 23. Aspace 30 is formed between theinner surfaces 23 of the first andsecond side members housing 12 further includes abase portion 32 formed at thesecond end 16 thereof. Thebase portion 32 includes first andsecond coves outer surface 21 of a corresponding one of the first andsecond side members base portion 32 further includes aslot 38 located intermediate thecoves upper surface 39 of thebase portion 32 to thespace 30. In an embodiment, theslot 38 is substantially rectangular in shape. Thehousing 12 further includes amounting portion 40 having aslot 42 that extends from anupper surface 43 of themounting portion 40 to thespace 30, and a plurality ofmounting holes 44. In an embodiment, theslot 42 is substantially rectangular in shape. - In an embodiment, the
pressure relief latch 10 includes abolt 46. In an embodiment, thebolt 46 is J-shaped. In other embodiments, thebolt 46 can have a U-shape or any other suitable shape. In an embodiment, thebolt 46 includes afirst end 48 located on an arcuate/curvilinear portion 50 and asecond end 52 located on alinear portion 54. In an embodiment, thebolt 46 includes abolt notch 56 formed within thelinear portion 54 and adjacent to one end of thecurvilinear portion 50. Aslot 58 is formed within thefirst end 48 of thebolt 46. In an embodiment, thebolt 46 is mounted rotatably to thehousing 12 such that thefirst end 48 of thebolt 46 is mounted to thefirst end 14 of thehousing 12 by arivet 60 a, which is inserted within thehole 28. In an embodiment, thelinear portion 54 of thebolt 46 extends through thespace 30 when thebolt 46 is in a first position, and thesecond end 52 of thebolt 46 extends through and protrudes from theslot 42 of themounting portion 40 when thebolt 46 is in its first position. Atorsion spring 62 is positioned on therivet 60 a and within theslot 58 of thebolt 46. - In an embodiment, the
pressure relief latch 10 includes atrigger 64. In an embodiment, thetrigger 64 is substantially “Z” in shape. In other embodiments, thetrigger 64 includes other suitable shapes and sizes. In an embodiment, thetrigger 64 includes afirst end 66 and asecond end 68. Thesecond end 68 of thetrigger 64 includestrigger slot 70 and a hole 72 (seeFIG. 3 ). In an embodiment, thetrigger 64 is mounted rotatably to thehousing 12 such that thesecond end 68 of thetrigger 64 is mounted to theholes 26 of thetabs 24 of thehousing 12 by anotherrivet 60 b extending through thehole 72, and apin 74 having aroller 76 mounted thereon extending through thetrigger slot 70 and theelongated slots 22 of theside members first end 66 of thetrigger 64 extends through and protrudes from theslot 38 of thebase portion 32. In an embodiment, thepin 74 and theroller 76 combination are sized and shaped to engage thebolt notch 56 of thebolt 46 when thelatch 10 is in its closed position. - In an embodiment, the
pressure relief latch 10 includes first andsecond compression springs coves base portion 32 of thehousing 12. One end of each of thesprings rear interior portion 81 of a corresponding one of thecoves base portion 32, while the other end of each of thesprings corresponding side cap 82 mounted thereon, which receives thepin 74 and theroller 76 combination. -
FIG. 4 shows the areas on thelatch 10 where it can be opened. That is, thelatch 10 can be opened manually by a human finger (or other implement) on thefirst end 66 of thetrigger 64, or it can be opened automatically when a defined load is reached on thefirst end 48 on thebolt 46. - Referring to
FIGS. 5 and 6 , in an embodiment, thelatch 10 may be opened from its first, closed position to its second, open position under a defined load. As an example of a “defined load,” when pressure builds up and reaches a defined pressure inside an engine compartment, thelatch 10 pushes the engine compartment door open to release the pressure. When the defined load is reached, thebolt 46 rotates clockwise and pushes theroller 76, which is guided by thepin 74, in theelongated slots 22 of theside members housing 12 toward thesecond end 16 of thehousing 12, and loaded by thecompression springs bolt 46 disengages thebolt notch 56 and stops. Thebolt 46 is retained in its open position under the load of thetorsion spring 62 acting thereon. In this regard, thetrigger slot 70 allows thepin 74 and theroller 76 to move only in one direction, which is a direction away from thebolt 46 and toward thesecond end 16 of thehousing 12. - Referring to
FIG. 7 , in an embodiment, thelatch 10 may be opened from its first, closed position to its second, open position manually. From its closed position, thelatch 10 can be opened by finger pressure on thefirst end 66 of thetrigger 64, which pivots about therivet 60 b and rotates counterclockwise. In this regard, thetrigger 64 pulls thepin 74 androller 76 away from thebolt notch 56 of thebolt 46 until they disengage one another, thereby enabling thebolt 46 to automatically rotate clockwise under the load of thetorsion spring 62 and is retained in open position. - In an embodiment, from its open position, the
latch 10 can be closed manually by finger pressure on thesecond end 52 of thebolt 46, which pivots about therivet 60 a to rotate counterclockwise. In this regard, when thebolt 46 makes contact with theroller 76, thebolt 46 pushes thepin 74 androller 76 away until theroller 76 engages thebolt notch 56 of thebolt 46. Thebolt 46 is then retained in closed position. - It should be understood that the embodiments described herein are merely exemplary and that a person skilled in the art may make many variations and modifications without departing from the spirit and scope of the invention. All such variations and modifications are intended to be included within the scope of the invention as defined in the appended claims.
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US16/797,306 US20200208449A1 (en) | 2015-08-04 | 2020-02-21 | Pressure relief latch |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US201562200971P | 2015-08-04 | 2015-08-04 | |
US15/224,026 US10604977B2 (en) | 2015-08-04 | 2016-07-29 | Pressure relief latch |
US16/797,306 US20200208449A1 (en) | 2015-08-04 | 2020-02-21 | Pressure relief latch |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US15/224,026 Continuation US10604977B2 (en) | 2015-08-04 | 2016-07-29 | Pressure relief latch |
Publications (1)
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US20200208449A1 true US20200208449A1 (en) | 2020-07-02 |
Family
ID=56800359
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US15/224,026 Active 2038-12-08 US10604977B2 (en) | 2015-08-04 | 2016-07-29 | Pressure relief latch |
US16/797,306 Abandoned US20200208449A1 (en) | 2015-08-04 | 2020-02-21 | Pressure relief latch |
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Application Number | Title | Priority Date | Filing Date |
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US15/224,026 Active 2038-12-08 US10604977B2 (en) | 2015-08-04 | 2016-07-29 | Pressure relief latch |
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EP (1) | EP3331760B1 (en) |
JP (1) | JP6522230B2 (en) |
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CA2992151C (en) | 2015-08-04 | 2020-01-21 | Arconic Inc. | Pressure relief latch |
US11702994B2 (en) | 2019-05-06 | 2023-07-18 | Rohr, Inc. | Pressure relief latch |
EP3950508A1 (en) * | 2020-08-07 | 2022-02-09 | SACS Aerospace GmbH | Locking device |
CN113944686B (en) * | 2021-10-18 | 2022-10-28 | 北京微纳星空科技有限公司 | Automatic triggering locking hinge |
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EP2663707B1 (en) * | 2011-01-10 | 2019-05-15 | Hartwell Corporation | Pressure relief latch mechanism |
FR2978424B1 (en) * | 2011-07-26 | 2014-05-16 | Lisi Aerospace | OVERPRESSURE LATCH |
US8646819B2 (en) | 2011-10-31 | 2014-02-11 | Alcoa Inc. | Rotary-handle latch |
FR3015952B1 (en) | 2014-01-02 | 2018-01-26 | Airbus Operations | HOOD LOCKING SYSTEM |
FR3015953B1 (en) | 2014-01-02 | 2016-02-12 | Airbus Operations Sas | HOOD LOCKING SYSTEM |
HUE033299T2 (en) * | 2014-02-16 | 2017-11-28 | Qrp Inc | Pressure release latch |
US9353559B2 (en) | 2014-04-22 | 2016-05-31 | Airbus Operations (Sas) | Latching system for securing two components |
CA2992151C (en) | 2015-08-04 | 2020-01-21 | Arconic Inc. | Pressure relief latch |
ES2709624T3 (en) * | 2015-08-26 | 2019-04-17 | Arconic Inc | Adjustable pressure relief closure |
-
2016
- 2016-07-29 CA CA2992151A patent/CA2992151C/en active Active
- 2016-07-29 BR BR112018001494-0A patent/BR112018001494A2/en not_active Application Discontinuation
- 2016-07-29 US US15/224,026 patent/US10604977B2/en active Active
- 2016-07-29 CA CA3062203A patent/CA3062203C/en active Active
- 2016-07-29 EP EP16757109.0A patent/EP3331760B1/en active Active
- 2016-07-29 WO PCT/US2016/044811 patent/WO2017023788A1/en active Application Filing
- 2016-07-29 JP JP2018505690A patent/JP6522230B2/en active Active
- 2016-08-04 CN CN201620836642.XU patent/CN205976826U/en not_active Withdrawn - After Issue
- 2016-08-04 CN CN201610632676.1A patent/CN106437364B/en active Active
-
2020
- 2020-02-21 US US16/797,306 patent/US20200208449A1/en not_active Abandoned
Also Published As
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CA2992151A1 (en) | 2017-02-09 |
CA3062203C (en) | 2023-04-25 |
CA3062203A1 (en) | 2017-02-09 |
EP3331760A1 (en) | 2018-06-13 |
US20170037667A1 (en) | 2017-02-09 |
JP2018526262A (en) | 2018-09-13 |
JP6522230B2 (en) | 2019-05-29 |
CN106437364A (en) | 2017-02-22 |
WO2017023788A1 (en) | 2017-02-09 |
CN106437364B (en) | 2018-01-12 |
BR112018001494A2 (en) | 2018-09-11 |
CA2992151C (en) | 2020-01-21 |
CN205976826U (en) | 2017-02-22 |
EP3331760B1 (en) | 2020-12-02 |
US10604977B2 (en) | 2020-03-31 |
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