John Manufacturing Limited

John Se-Kit Yuen

A drink-item holding apparatus incorporates an upper flap and a lower flap which may be unfolded from a stowed configuration to a deployed configuration in which the upper flap is releasably latched in its horizontal position. Projections at the rear edge of the upper flap resiliently push in L-shaped arms against the biasing action of springs until the projections snap past the arms which then serve to latch the upper flap in its deployed configuration. The upper flap may be rotated in the reverse direction in order to unlatch the projections so as to return to the stowed configuration. The upper flap is therefore protected against inadvertent downward rotation. The lower flap folds away upwards, and the upper flap folds away downwards against the lower surface of the lower flap in order to produce a compact arrangement of the apparatus.

Drink-item holding apparatus and a portable cooler box incorporating the same

A photo-electronic air purifying disinfector firstly filters out airborne impurities using a washable filter screen. It then utilizes an activated carbon filter to filter out airborne bacteria and germs. The bacteria and germs which are capable of passing through the activated carbon filter are then eliminated by extreme-UV light emitted by extreme-UV light tubes. It also utilizes a negative ion generator to boost the level of anions in the air before being discharged. These two modes operate in the following manner: the first mode involves cathodic high-voltage output that is discharged via a carbonized fibre. The ionized air is then expelled by a fan. The second mode eliminates bacteria, germs and mould from air as it passes extreme-UV light tubes by exposure to extreme-UV light emitted by these extreme-UV light tubes.

Photo-electronic air purifying disinfector

A 4-in-1 photo-electronic air purifying and conditioning system, which utilizes alternating current suitable for use in all weather conditions has activated carbon filters used in the first stage to eliminate impurities, germs and bacteria in the air drawn into the system. The bacteria and germs which are capable of passing through the activated carbon filter are then eliminated by extreme-UV light emitted by extreme-UV light tubes. A negative ion generator is used to boost the level of anions in the air before being discharged. These two modes operate in the following manner: the first mode involves high-voltage cathodic output that is discharged via carbonized fibers. The ionized air is then expelled by a fan. The second mode eliminates bacteria, germs and mould from air as it passes extreme-UV light tubes by exposure to extreme-UV light emitted by these extreme-UV light tubes.

Photo-electronic air purifying and conditioning system

A 3-in-1 photo-electronic air purifying and disinfecting system, which utilizes alternating current, has an activated carbon filter used in the first stage to eliminate impurities, germs and bacteria in the air drawn into the system. The bacteria and germs which are capable of passing through the activated carbon filter are then eliminated by extreme-UV light emitted by extreme-UV light tubes. An anion generator is also included to boost the level of anions in the air before being discharged. These two modes operate in the following manner: the first mode involves high-voltage cathodic output that is discharged via a carbonized fiber. The ionized air is then expelled by a fan. The second mode eliminates bacteria, germs and mold from air as it passes extreme-UV light tubes by exposure to extreme-UV light emitted by these extreme-UV light tubes.

Photo-electronic air purifying and disinfecting system

A 4-in-1 photo-electronic air conditioning, dehumidifying, purifying and disinfecting system has an activated carbon filter in the first stage to eliminate impurities, germs and bacteria in the air drawn into the system. The bacteria and germs in the extracted air, which are capable of passing through the activated carbon filter, are then eliminated by extreme-UV light emitted by extreme-UV light tubes. The excessive moisture in the air is also removed. A negative ion generator is also used to boost the level of anions in the air. These two modes operate in the following manner: the first mode involves high-voltage cathodic output that is discharged via a carbonized fibre. The ionised air is then expelled by an air drum. The second mode eliminates bacteria, germs and mould from air as it passes extreme-UV light tubes by exposure to extreme-UV light emitted by these extreme-UV light tubes.

Photo-electronic air conditioning, dehumidifying, purifying and disinfecting system

Vacuum cleaner with integral air compressor, spotlight and flashing light

Rechargeable light

Rechargeable lantern

Cordless kettle

Lantern

Tool kit radio lantern

A personal security alarm device includes a flashlight having a main housing with a bulb and reflector, a battery compartment and an actuation switch. A sub-housing is pivotally mounted in an L-shaped cut out portion at the lower front end of the main housing. An audible alarm is mounted in the main housing and is energized by pulling a handle to extract a contact pin from the housing and close a pair of electrical contacts.

Personal security alarm with twin lights

In a portable device sensitive to a change in movement a switch inside the device has a movable slug which increases the electrical resistance in an electrical circuit when the device is disturbed. Such increase in resistance in the electrical circuit unbalances two inputs of a Schmitt trigger to cause an output of the Schmitt trigger to switch a switching transistor to cause an oscillator to drive an output transducer to give an alarm. A feedback loop limits the period for which the alarm is given and a delay circuit prevents an alarm being given when the device is initially energized and before the two inputs of the Schmitt trigger are balanced.

Growing community of inventors

Hong Kong, China

John Se-Kit Yuen