An advanced laptop Bag that can converts into a portable work desk via extendable and adjustable legs housed on all 4 sides at the bottom of the laptop bag so it can turn into a sturdy work desk and has a waterproof PORTABLE USB charging station, anti-theft unit, and a cup holder. The Portable Desk Laptop Bag will be designed comparable to most Laptop Bag but will separate itself from all Laptop Bags as it can turn into a work desk. Prior designs of Laptop Bag stopped at being a housing unit for laptops and supplies where mine has advanced the Laptop Bag by adding adjustable legs at all sides of the bottom of the Laptop Bag to enable the Laptop Bag to be used as a work desk for the laptop while also being a housing unit for the laptop and supplies.

An advanced backpack that converts into a sturdy, potable, student desk via adjustable legs housed on all four sides at the bottom of the Backpack and a HARD desk top surface that can be extended out to create a larger desk top. The backpack will have a 360 degree zipper on compartment #4 of the backpack so the backpack can be completely detached from the base of the Potable Desk backpack if desired. The Backpack will be designed comparable to most Backpack but will separate itself from ALL Backpacks as it can turn into a Potable Desk. Prior designs of backpack stopped at being a housing unit for books and supplies but mine has advanced the backpack by adding adjustable legs on all 4 sides of the bottom of the backpack to enable the backpack to be used as a Potable Desk along with being a housing unit for books and supplies. The Backpack's Potable Desk will be designed so it can be used by a customer standing up or sitting down. The Backpack's Potable Desk surface will be adjustable so it can be extended and/or retracted to create a larger work desk. The backpack will also have a water proof UBS charging port to house two USB charging station and a charging port, a cup holder, an anti-theft device, a pencil holder on the desk and some backpacks will have wheels and a walking handle for travel conveyance.

An advanced backpack that converts into a sturdy, potable, student desk via adjustable legs housed on all four sides at the bottom of the Backpack and a HARD desk top surface that can be extended out to create a larger desk top. The backpack will have a 360 degree zipper on compartment #4 of the backpack so the backpack can be completely detached from the base of the Potable Desk backpack if desired. The Backpack will be designed comparable to most Backpack but will separate itself from ALL Backpacks as it can turn into a Potable Desk. Prior designs of backpack stopped at being a housing unit for books and supplies but mine has advanced the backpack by adding adjustable legs on all 4 sides of the bottom of the backpack to enable the backpack to be used as a Potable Desk along with being a housing unit for books and supplies. The Backpack's Potable Desk will be designed so it can be used by a customer standing up or sitting down. The Backpack's Potable Desk surface will be adjustable so it can be extended and/or retracted to create a larger work desk. The backpack will also have a water proof UBS charging port to house two USB charging station and a charging port, a cup holder, an anti-theft device, a pencil holder on the desk and some backpacks will have wheels and a walking handle for travel conveyance.

An advanced Briefcase that converts into a desk via retractable leg and a front, left, and right side walls of the briefcase that folds down to create a desk top surface. This surface can also expand out to create a larger desk top surface. It also has a PORTABLE USB charging station and a cup holder. The portable briefcase will be designed comparable to most Briefcase but will separate it's self from all Briefcases as it can turn into a work desk. Prior designs of Briefcase stopped at being a housing unit for paper work and supplies where mine has advanced the Briefcase by adding adjustable legs on all sides of the bottom of the Briefcase to enable the Briefcase to be used as a work desk and the ability for the front and both sides of the briefcase to fold down to create a desk top surface that can be extended out to create a larger desk to surface along with being a housing unit for paper work and supplies.

A height-adjustable table structure includes: a tabletop, a first support frame, a second support frame, a first spring, an adjustment unit, a linkage group, and a positioning member. The adjustment member is disposed to the top surface of the tabletop for the user to observe. When the adjustment member is driven to move, the locking member of the linkage group is moved from the locking position to the releasing position, so that the first and support frames are free to rotate. When the adjustment member is released, the locking member will be moved from the releasing position to the locking position, so as to maintain the adjusted height of the table structure. By such arrangements, during the height adjustment of the table structure, the user can clearly see the position of the adjustment member, leading to more intuitive use, achieving easy operation and improved safety.

A height-adjustable table structure includes: a tabletop, a first support frame, a second support frame, a first spring, an adjustment unit, a linkage group, and a positioning member. The adjustment member is disposed to the top surface of the tabletop for the user to observe. When the adjustment member is driven to move, the locking member of the linkage group is moved from the locking position to the releasing position, so that the first and support frames are free to rotate. When the adjustment member is released, the locking member will be moved from the releasing position to the locking position, so as to maintain the adjusted height of the table structure. By such arrangements, during the height adjustment of the table structure, the user can clearly see the position of the adjustment member, leading to more intuitive use, achieving easy operation and improved safety.

An etching easel apparatus includes an easel backboard having a board front side, a board back side, and connecting edges that, together, define a recessed area. A bottom lip is coupled to the board bottom edge of the easel backboard portion and extends perpendicularly from the board front side and laterally between the left and right edges. A top lip is pivotally coupled to the board top edge of the easel backboard portion and extends perpendicularly from the board front side. The top lip is configured to secure an etching plate against the board front side and the bottom lip. A wall mount is coupled to the board back side of the easel backboard portion and has a pair of mounting apertures configured to receive hardware inserted into a wall. The apparatus includes a height adjustable table stand configured to support the backboard.

An etching easel apparatus includes an easel backboard having a board front side, a board back side, and connecting edges that, together, define a recessed area. A bottom lip is coupled to the board bottom edge of the easel backboard portion and extends perpendicularly from the board front side and laterally between the left and right edges. A top lip is pivotally coupled to the board top edge of the easel backboard portion and extends perpendicularly from the board front side. The top lip is configured to secure an etching plate against the board front side and the bottom lip. A wall mount is coupled to the board back side of the easel backboard portion and has a pair of mounting apertures configured to receive hardware inserted into a wall. The apparatus includes a height adjustable table stand configured to support the backboard.

An electric lifting platform retractable upon hitting an obstruction includes a lifting column, a platform, a controller, and a manipulator. The controller comprises a main control unit and a motor driving circuit. An output end of the main control unit is connected to the motor driving circuit. The electric lifting platform further includes a multi-axis sensor module for acquiring obstruction-hitting data of the platform. As the multi-axis sensor module is connected to an input end of the main control unit, the main control unit transmits a control signal to the motor driving circuit after processing the obstruction-hitting data, and the motor driving circuit controls the lifting column to execute a corresponding retracting movement.

An electric lifting platform retractable upon hitting an obstruction includes a lifting column, a platform, a controller, and a manipulator. The controller comprises a main control unit and a motor driving circuit. An output end of the main control unit is connected to the motor driving circuit. The electric lifting platform further includes a multi-axis sensor module for acquiring obstruction-hitting data of the platform. As the multi-axis sensor module is connected to an input end of the main control unit, the main control unit transmits a control signal to the motor driving circuit after processing the obstruction-hitting data, and the motor driving circuit controls the lifting column to execute a corresponding retracting movement.