Abstract: A self-defense device for use by a victim or intended victim of an attack or intended attack by an attacker and includes the use of an audible alarm and/or a disabling spray device which will discharge a disabling spray toward and onto the attacker. The audible alarm can be manually actuated by the victim or intended victim or automatically actuated if the self-defense device is pulled away from the victim by the attacker. The spray device is manually actuated. Automatic actuation of the audible alarm also disarms the spray device in response to the self-defense device being pulled away from the victim thereby preventing the attacker from using the disabling spray device to temporarily disable the victim.

Abstract: An automatic disarming device for use with self defense spray devices and other devices which have been taken from their owners or their normally stored position or location which renders such devices ineffective or inoperative until the devices are returned to their proper association with the disarming device or to their proper position. More specifically, the disarming device is adapted to but not limited to use with self defense spray devices as well as other useful or noxious spray devices when such devices are taken from their owners or from their proper place of storage thereby preventing such spray devices from being used against an owner or when such devices have been removed from a stored position by an unauthorized person or a person not familiar with appropriate procedures or precautions when actuating a spray device or other device.

Abstract: A plastic injection molding machine includes a quill secured to a plasticizing screw for rotatably driving the plasticizing screw. A quill insert is provided between a rotating motor ouptut and the quill to affect rotational movement of the plasticizing screw. An injection piston for axially displacing the quill and plasticizing screw is mounted on the quill so as to allow the quill to freely rotate within the injection piston.

Abstract: Disclosed is a portable hydroponic unit comprising a nutrient containing trough which supports an plant supporting aggregate filled tray. Liquid nutrient is carried to the aggregate through an upwardly directed conduit, with apertures in the aggregate, by air bubbles supplied at the conduit lower open end by an air source.