Hartwell Corporation

Vsi Corporation

William R Bourne, Jr

L Richard Poe

Frank T Jackson

John C Stammreich

Frank Thomas Jackson

Darrell L James

William R McCown

Arthur W Dessenberger

Timothy A Carmody

Clifford A Davis

An extended reach latch for an engine cowling and the like, including a housing having a housing slot, a hook pin carried in the housing, a hook having a hook slot, with the hook pin in the hook slot for sliding of the hook relative to the housing, first, second and third links, a first link pin joining the hook and the first link and sliding in the housing slot, a second link pin joining the first and second links, a third link pin joining the second and third links, with the third link pivoting on the hook pin, an outer handle pivotally mounted on the first link pin for movement between an open position and a closed position, and having an outer handle slot for the second link pin, and an inner handle pivotally mounted on the first link pin for movement between an open position and a closed position, and having an inner handle slot for the third link pin, with movement of the inner handle from its open position to its closed position moving the hook into the housing a first distance, and with movement of the outer handle from its open position to its closed position moving the hook into said housing a second lesser distance.

Extended reach latch

Quick release latch for a bus seat or the like

A hook latch mechanism for joining two members of an engine cowl or the like, with the hook latch mechanism carried on one member on a mounting bolt and a keeper carried on the other member, and with a keeper engaging hook spaced from the handle. The hook latch includes a body, a hook carried in the body for engagement with a keeper, a handle pivotally mounted on the body at a first pivot axis for movement between latched and unlatched positions, a catch carried on the handle for engagement with the body when the handle is in the latched position, and first, second and third links, with the first link pivotally connected at one end to the body at a second pivot axis, the second link pivotally connected to the handle at a third pivot axis, and the third link pivotally connected to the second link at a fourth pivot axis and pivotally connected to the first link at a fifth pivot axis, with the third link including a mounting bolt opening for pivotally receiving a mounting bolt, and the body including a slot for slidingly receiving the mounting bolt.

Low profile hook latch assembly

A hold down device is provided using a drive knob having a clutch therein which turns a drive shaft for moving a pawl shaft in and out with respect to the drive shaft. A pawl on the end of the pawl shaft is provided with a cam-like surface which engages a cam-like aperture in a pawl receptacle. The pawl shaft has a cam follower which rides within a cam surface in a cam bracket that surrounds the shaft. Under the urging of a spring, the position of the pawl is controlled from its fully extended, unlocked position to a pre-capture position where the pawl is oriented at approximately 45.degree. to an aperture within the pawl receptacle. Insertion of the pawl into the pawl receptacle forces the pawl to rotate an additional 45.degree. against the urging of the spring. After full insertion of the pawl into the receptacle, the pawl rotates back to its 45.degree. position where it is captured therein. Further tightening of the knob will move the pawl to a locked, preload position under the control of the cam surface within the cam bracket.

Hold down device with extended capture pawl mechanism

A toggle latch is shown which retains a structure, such as an aircraft door, latched against a second structure, such as the fuselage. The latch includes a housing having a latch actuator joined to the housing a first pivot point and a latch member joined to the housing at a second pivot point. A linkage joins the latch actuator and latch member at third and fourth pivot points. In the latched position, the fourth pivot point is positioned past a center line between the first and third pivot points to create the over-center, toggle effect of the latch. A safety catch is pivoted within the latch actuator which extends into a passage in the actuator. The safety catch also engages the housing when the toggle latch is in its latched position to lock the latch closed. Insertion of a tool into the passage engages the safety catch to remove it from its locking contact with the housing and free the latch actuator for opening the latch.

Toggle latch with automatic safety catch

A rotary latch including a hook arm joined to a drive sleeve having an end flush with a surrounding surface, the sleeve having a tool receiving socket; the socket also receiving a reciprocal signal shaft occupying a flush position when the latch is secured but automatically movable to an extended position or retracted position to signal that the latch is not secured.

Signalling means for rotary latches

A rotary latch and its method of operation, the latch being caused to move between a position flush with a surrounding surface and a protruding position as the latch is moved between its latched position and its unlatched position, a rotary drive means, by reason of its protruding position, being readily visible to indicate the unlatched condition; the rotary drive means including a control sleeve having radially outwardly facing detent pockets engaged by a radially movable pin, one socket being engaged when the latch is in its flush-latched condition, second socket being engaged when in its fully unlatched condition, and a third socket being engaged as a secondary latch.

Rotary latch and method of operation

A separable fastener including a stud component and a latching sleeve component, the stud component being arranged for installation, in a sheet member having a rectangular opening, by limited insertion and rotation; the latching sleeve member being installed in a second sheet member, having a rectangular opening, by axial movement.

Growing community of inventors

Redondo Beach, CA, United States of America

William R Bourne, Jr