1. A heat sink assembly comprising:
a socket;
an electronic package mounted on the socket;
a heat sink; and
a clip comprising a pressing member engaged with the socket, and an operating member comprising a pair of resilient portions, the pressing member comprising a pair of opposite pressing portions pressing the heat sink against the electronic package, a pair of cutouts being defined in the pressing member at a side thereof, the resilient portions snappingly engaged with the pressing member in the cutouts.
2. The heat sink assembly as described in claim 1, wherein two catches are provided on opposite sides of the socket, latching legs with fixing holes defined therein extend downwardly from the clip, the fixing holes engagingly receiving the catches therein respectively.
3. The heat sink assembly as described in claim 1, wherein a handle is bent from a top of the operating member, for facilitating operation.
4. The heat sink assembly as described in claim 1, wherein a pair of shoulders is formed at opposite sides of a top portion of the heat sink, the pressing portions of the clip being engaged on the shoulders.
5. The heat sink assembly as described in claim 2, wherein the pressing member further comprises opposite first and second beams interconnecting corresponding opposite ends of the pressing portions.
6. The heat sink assembly as described in claim 5, wherein a tab extends upwardly from a middle portion of the first beam.
7. The heat sink assembly as described in claim 5, wherein the cutouts are defined in a top of a middle portion of the second beam, and the resilient portions are formed inwardly from opposite sides of the operating member.
8. The heat sink assembly as described in claim 5, wherein a first latching leg extends downwardly from a bottom of the operating member, and a second latching leg extends downwardly from a middle portion of the first beam, the first and second latching legs engaging with the catches of the socket.
9. The heat sink assembly as described in claim 5, wherein the pressing portions are each substantially M-shaped.
10. The heat sink assembly as described in claim 5, wherein the pair of cutouts is defined in the pressing portions at opposite sides of the pressing member near the second beam, and upper portions of the resilient portions are received in the cutouts.
11. The heat sink assembly as described in claim 10, wherein a notch is defined in an outer edge of each of the resilient portions.
12. A heat sink assembly comprising:
a socket;
an electronic package mounted on the socket;
a heat sink; and
a clip for pressing the heat sink against the electronic package, the clip comprising an operating member and a pressing member, wherein
the operating member comprises a main body, at least two fastening means are provided in opposite sides of the main body, a first latching leg extends downwardly from a bottom of the main body, and the pressing member comprises a pair of opposite pressing portions pressing the heat sink against the electronic package, the fastening means of the operating member snappingly engages with at least one side of the pressing member, and a second latching leg extends downwardly from the pressing member distal from the first latching leg.
13. The heat sink assembly as described in claim 12, wherein two catches are provided on opposite sides of the socket, the first and second latching legs each define a fixing hole, and the fixing holes engagingly receiving the catches therein respectively.
14. The heat sink assembly as described in claim 12, wherein a handle is bent from a top of the operating member, for facilitating operation.
15. The heat sink assembly as described in claim 12, wherein the pressing member further comprises opposite first and second beams interconnecting corresponding opposite ends of the pressing portions.
16. The heat sink assembly as described in claim 15, wherein two cutouts are defined in a top of a middle portion of the second beam, and the fastening means is snappingly engaged with the second beam in the cutouts.
17. The heat sink assembly as described in claim 15, wherein two cutouts are respectively defined in the pressing portions near the second beam; and the fastening means is engaged with the pressing portions in the cutouts.
18. A heat sink assemble comprising:
a socket sub-assembly;
a heat generating device located on the socket sub-assembly;
a heat sink seated upon said heat generating device, said heat sink defining two side regions;
a clip including a pressing member and an operating member discrete from each other, said pressing member originally configured with a rectangular frame and later bent to form a final curved shape with thereof two opposite pressing portions abutting against said two side regions, a first beam integrally connected between two ends of said two pressing portions and including a first latch leg to fasten to one side the socket sub-assembly; and a second beam integrally connected between other two ends of said two pressing portions in parallel to said first beam,
said operating member attached to the pressing member around said second beam, said operating member including a second latch leg to fasten to the other side of the socket sub-assembly and a handle opposite to said second latch leg; wherein
said two opposite pressing portions, said first beam and said second beam commonly define generally a periphery of said heat sink.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An emergency shutoff valve comprising:
a fluid conduit;
a frangible area defined in said conduit;
a valve member operably connected to said conduit upstream of said frangible area;
an expansible chamber, said frangible area being disposed in said expansible chamber;
a movable member defining at least a portion of said expansible chamber; and
a linkage operably coupled to said movable member and said valve member for shutting said valve upon movement of said movable member in response to leakage of fluid through said frangible area.
2. The emergency shutoff valve of claim 1, wherein said movable member comprises a sleeve disposed in surrounding relationship with said fluid conduit, said sleeve being sealed to said fluid conduit upstream and downstream of said frangible area.
3. The emergency shutoff valve of claim 2, wherein said sleeve is formed from an elastomeric material.
4. The emergency shutoff valve of claim 3, wherein said sleeve is made of a material selected from the group consisting of fluro silicone rubber, BUNA-N rubber, and fluro elastomer rubber.
5. The emergency shutoff valve of claim 2, further comprising:
a rotatable shaft having one end projecting outwardly from said fluid conduit, said valve member being coupled to said shaft for rotation therewith; and
a biasing member, said biasing member cooperating with said rotatable shaft to bias said valve member toward a closed position.
6. The emergency shutoff valve of claim 5, wherein said linkage further comprises:
a first link having a proximal end removably coupled to said fluid conduit and a distal end; and
a second link having a proximal end pivotally coupled to said distal end of said first link and a distal end operatively coupled to said rotatable shaft.
7. The emergency shutoff valve of claim 6, wherein a first failure mode is defined by cracking or breaking of said fluid conduit at said frangible area, wherein fluid from said fluid conduit leaks into said expansible chamber and moves said movable member such that said first link is disengaged from said fluid conduit, thereby allowing rotation of said second link and said rotatable shaft such that said valve member closes.
8. The emergency shutoff valve of claim 7, wherein said first link includes a fusible area disposed between said proximal and distal ends, and a second failure mode is defined by a fire near said fluid conduit, wherein said fusible area is adapted to melt in the presence of fire and thereby release said second link and said rotatable shaft such that said valve member closes.
9. The emergency shutoff valve of claim 5, wherein said linkage further comprises:
a first link pivotally coupled to said fluid conduit and including a proximal end operatively coupled to said movable member and a distal end including a slot; and
a second link having a proximal end including a pin adapted to engage said slot of said first link and a distal end operatively coupled to said rotatable shaft.
10. The emergency shutoff valve of claim 9, wherein a first failure mode is defined by cracking or breaking of said fluid conduit at said frangible area, wherein fluid from said fluid conduit leaks into said expansible chamber and moves said movable member such that said first link is rotated, thereby allowing said pin of said second link to disengage from said slot and allow said valve member to close.
11. The emergency shutoff valve of claim 2, wherein said sleeve is configured to prevent fluid spillage from said fluid conduit to the outside environment when failure of said fluid conduit occurs.
12. The emergency shutoff valve of claim 2, wherein said frangible area comprises a groove formed in said fluid conduit, said groove configured to fail before any other part of said fluid conduit when said fluid conduit is stressed.
13. The emergency shutoff valve of claim 1, further comprising:
a second valve member disposed downstream of said frangible area and biased towards a closed position when fluid flow in said fluid conduit is stopped, said second valve member adapted to prevent backflow of liquid from downstream of said fluid conduit into said expansible chamber when said second valve member has closed.
14. An emergency shutoff valve comprising:
a housing having a weakened portion to define a predetermined failure site;
an expansible member at least partially surrounding said weakened portion; and
a valve member, wherein said expansible member is operatively coupled to said valve member to close the valve member when said expansible member is expanded.
15. The emergency shutoff valve of claim 14, wherein said valve member is adapted to close in response to a first failure mode where said housing is cracked, thereby allowing expansion of said expansible member.
16. The emergency shutoff valve of claim 14, wherein said valve member is adapted to close in response to a second failure mode where said housing is exposed to fire.
17. The emergency shutoff valve of claim 14, wherein said housing is coupled to an upstream fluid source and a downstream fluid pump, the emergency shutoff valve further comprising:
a second valve member disposed downstream of said valve member and said weakened portion, said second valve member biased to close automatically when said valve member closes,
wherein said valve member and said second valve member cooperate when each is closed to isolate said housing and said expansible member from the upstream fluid source and the downstream fluid pump.
18. A method of shutting off fuel flowing through a conduit defining a frangible area therein, the method comprising:
defining an expansible chamber about the frangible area for capturing fuel leaking through the frangible area;
moving a member defining at least a portion of the expansible chamber in response to the leaking fuel; and
shutting off a fuel valve in response to said moving of the movable member.
19. The method of claim 18, further comprising:
moving the expansible member in response to the leaking fuel; and
engaging the expansible member with the linkage in response to moving the expansible member.
20. The method of claim 19, wherein moving the expansible member further comprises elastically deforming the expansible member.
21. The method of claim 19, further comprising using the engagement between the expansible member and the linkage to uncouple the linkage.
22. The method of claim 18, further comprising using fluid pressure to move the expansible member.
23. The method of claim 18, further comprising:
sealing a first end of an elastomeric sleeve to the housing upstream of the weakened portion; and
sealing a second end of an elastomeric sleeve to the housing downstream of the weakened portion.
24. A method of shutting off fuel flowing through a conduit defining a frangible area therein, said method comprising:
defining a chamber about the frangible area having an expansible member forming at least a portion of the chamber; and
using fluid pressure in the conduit line to actuate the expansible member to shut off fuel flow through the conduit.