摘要:
An improved forced entry resistant sash lock comprises a housing, a shaft rotatably mounted thereto, a locking spring, and a locking cam and a delay cam rotatably and fixedly mounted to the shaft, respectively. The delay cam selectively engages and drives the locking cam between a locked position and an unlocked position. Locking spring biasing causes engagement with a locking cam opening to lock the cam when in the latch-locked position, with engagement to a depth permitting releasable detent engagement in a delay cam recess. Selective engagement and driving of the locking cam comprises a first portion of delay cam rotation being without driven locking cam rotation, and a second portion causing driven locking cam rotation from a retracted position into a protruding position. Selective engagement is by contact between corresponding protrusions on the delay and locking cams. Shaft/delay cam counter-rotation to unlock the latch proceeds in a reverse manner.
摘要:
A portable computer and a locking mechanism thereof are provided. The portable computer includes a battery, a host and a locking mechanism. The battery has a locking hole. The battery includes a restraining protrusion. The host has a receiving through. The locking mechanism is disposed in the receiving through. The locking mechanism includes a main body and a locking protrusion. The main body has a first restraining concave and a second restraining concave. The locking protrusion is connected to the main body. When the restraining protrusion is placed in the first restraining concave, the locking protrusion is locked in the locking hole, so that the battery is locked in the receiving through. When the restraining protrusion is placed in the second restraining concave, the locking protrusion leaves the locking hole, so that the battery is dismounted from the receiving through.
摘要:
An inertial latch assembly including a planar shaped sector pivotally mounted between a pair of spaced apart support plates. The sector exhibits a bottom including a central projecting shoulder separating first and second bottom surfaces. An arcuate interior channel in the sector is offset from its pivotal mounting location, a pin extending through a second channel defined in a selected support plate and seating within the arcuate channel so that the pin exerts a bias against the sector during travel along the arcuate interior channel. A pendulum is secured in sandwiching fashion between the support plates and proximate the bottom extending surface of the planar shaped sector, an arcuate edge thereof seating against a selected bottom extending surfaces of the rotatable sector, depending upon a pivoted position established between the sector and the support plates. The pendulum responds to an inertial impact condition by engaging against the underside shoulder of the sector and to prevent rotation of the sector relative to the support plates.
摘要:
A lightweight roll-up door comprises multiple lightweight panels that can be transversely installed/removed with a simple hinge assembly. The panels are hinged about one edge and have outer complementary arcuate portions that fill the gap at the edges of the door as the panels rotate about the hinge. The panels are extruded from a lightweight material. Additionally, the panels are structurally capable of supporting the necessary door hardware without deformation or breakage. A latch assembly is mounted to an extruded bottom panel forming a latch recess for receiving the latch assembly and with multiple mounting supports disposed within the hollow interior and extending between the latch recess and the interior wall.
摘要:
Apparatus for molding concrete columns wherein an elongated shell has a pair of longitudinal sectors which are hinged to swing between closed and open positions so that the finished concrete column may be removed from the shell. Latches are provided for temporarily locking the sectors in the closed position and the periphery of the shell is provided with hooks which enable the shell to be transported between concrete column processing stations. A supporting jig separate from the shell permits the shell to be supported on the cross members of the lifting track of a fork lift tractor.