Abstract: A jack assembly including a base for contacting a support surface and a shaft having a first end coupled to the base and a second end, wherein the shaft includes a power screw disposed therein; and a coupling head pivotally coupled to the second end of the shaft, wherein the coupling head is adapted to be coupled to an object to be lifted.

Abstract: A jack assembly including a base for contacting a support surface and a shaft having a first end coupled to the base and a second end, wherein the shaft includes a power screw disposed therein; and a coupling head pivotally coupled to the second end of the shaft, wherein the coupling head is adapted to be coupled to an object to be lifted.

Abstract: A device for retaining a visored cap upon a wearer's head under high wind conditions includes a strap member and a pair of clamp members that directly engage the strap member and a portion of a visor on a cap. The direct coupling between the strap member and the visor on the cap, which is maintained by the clamp members, is particularly advantageous for maintaining a cap in a desired position on a wearer's head under high wind conditions. The retaining device of this invention also includes an adjustment member that allows a wearer to vary the effective length of the strap member to ensure a snug fit. Each of the clamp members and the adjustment member include a housing having a cavity and an opening formed therein, a pin member slidable in the cavity and having an opening formed therein and a spring to bias the pin member thereby clamping the strap member in the openings.

Abstract: A mailbox delivery signal apparatus includes a signal assembly coupled to a detection assembly. The signal assembly has a signal mast attached at one end to a wheel biased to an upright position by a torsion spring. The wheel is pivotally mounted on a hub attached to a housing attached to an outer surface of a sidewall of the mailbox. The housing includes a stop for engaging the signal mast and preventing further rotation past the upright "mail present" signalling position. The signal mast is maintained in the down "mailbox empty" signalling position by a spring biased pin which engages a detent recess formed in the periphery of the wheel. The detection assembly includes an arm pivotally mounted within the mailbox which arm rotates when an object is placed in the mailbox. The arm is coupled to the pin so that rotation of the arm moves the pin out of engagement with the detent recess in the wheel, permitting the torsion spring to rotate the signal mast to the upright signalling position.