Pressure relief latch

Patent metadata

Field	Value
Publication number	US-10604977-B2
Application number	US-201615224026-A
Country	US
Kind code	B2
Filing date	Jul 29, 2016
Priority date	Aug 4, 2015
Publication date	Mar 31, 2020
Grant date	Mar 31, 2020

Abstract

A latch including a housing having side members each having an elongated slot, a bolt mounted rotatably to the housing and positioned between the side members of the housing, a trigger mounted rotatably to the housing, and a pin and roller positioned slidably within the elongated slots of the side members of the housing. The bolt is moveable between a first, closed position and a second open position. The trigger is moveable between a first position, in which the pin and roller are engaged with the bolt when the bolt is in its first position, and a second position, in which the pin and roller are disengaged from the bolt. The latch can be opened automatically when a defined load is provided on the bolt, or manually by depressing the trigger to disengage the pin and roller from the bolt.

First claim

What is claimed is:

1. A latch, comprising:
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 latch is adapted to be operated manually by providing a force on the first end of the trigger to rotate the trigger 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.

2. The latch of claim 1 , wherein 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.

3. The latch of claim 2 , wherein the bolt is mounted rotatably to the housing by a rivet.

4. The latch of claim 3 , wherein 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.

5. The latch of claim 4 , wherein the trigger is mounted to the housing by a rivet.

6. The latch of claim 5 , wherein the pin and roller are disengaged from the bolt notch of the bolt when the trigger is in its second position.

7. The latch of claim 6 , wherein the bolt is retained in its second position by the torsion spring.

8. The latch of claim 7 , wherein 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.

9. The latch of claim 4 , wherein 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.

10. The latch of claim 9 , wherein the bolt is retained in its second position by the torsion spring.

11. The latch of claim 10 , wherein 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.

Assignees

• Arconic Inc

Inventors

• Do Thai

Classifications

• E05B15/04

  Spring arrangements in locks {(E05B3/065, E05B15/101, E05B15/143, E05C19/06 take precedence)} · CPC title

• Y10S292/49

  Toggle catches · CPC title

• B64D29/06 Primary

  Attaching of nacelles, fairings or cowlings · CPC title

• E05B2015/0448

  Units of springs; Two or more springs working together · CPC title

• E05C19/02 Primary

  Automatic catches, i.e. released by pull or pressure on the wing (E05C19/06 takes precedence {; with locking means E05B63/22}) · CPC title