| 摘要 |
<p>A latch includes an angled bracket having a front flange and a rear flange, each flange defining a hole, a cylindrical bolt having a front end and a rear end with an orthogonal bolt handle located intermediate of the front and rear ends, and a coil spring. The angled bracket includes at least two substantially orthogonal contiguous sides which extend from the front flange to the rear flange where these sides contain a substantially U-shaped slot, a portion of which lies on one of the sides and a portion of which lies on the other side. The bolt is arranged relative to the angled bracket such that the bolt handle extends through the slot and the ends of the bolt extend through the respective holes in the flanges. The spring is arranged coaxial to the bolt and biases the bolt forward to a latched position. In order to move the bolt to the unlatched position, the bolt must be both rotated and translated for the bolt handle to move through the U-shaped slot. The substantially U-shaped slot is preferably formed with an additional forward bend so that the bolt must be translated, rotated, and translated again to be moved from the latched position to an unlatched position. The angled bracket is preferably formed with five sides and is provided with mounting holes for attaching it to a cage. The disclosed bolt is formed as a stepped cylinder to provide a point of annular engagement with the spring.</p> |
