Abstract: A hand pump includes a piston slidably engaged in a housing and coupled to a piston rod, a handle attached to the piston rod for moving the piston along the housing in the reciprocating action in order to pump and generate a pressurized air and to supply the pressurized air out through the outlet port of the housing, and an electric generator is engaged in the housing for being actuated and operated by the pressurized air to generate an electrical energy. The electric generator includes a fan device for being actuated and operated by the pressurized air, and includes a rotor engaged in a coil for generating the electrical energy when the rotor is rotated relative to the coil.

Abstract: An air valve connecting device or attachment includes a housing having a tilted inner peripheral surface, a sliding member slidably engaged in the housing and having a pathway for receiving a pressurized air, a gripping device having two casing members slidably engaged with the tilted inner peripheral surface of the housing and having a passage formed in the casing members, and an inflation valve engageable into the passage of the casing members for moving the casing members into the housing and for allowing the casing members to be forced toward each other with the tilted inner peripheral surface of the housing and in order to grasp the inflation valve with the casing members.

Abstract: A hand pump includes a piston slidably engaged in a housing and coupled to a piston rod, a handle attached to the piston rod for moving the piston along the housing in the reciprocating action in order to pump and generate a pressurized air and to supply the pressurized air out through the outlet port of the housing, the piston is selected from a magnetic member, and a coil is engaged onto the housing and disposed around the piston for generating an electrical energy when the piston is moved relative to the housing and the coil. The piston includes one or more recesses for receiving the pressurized air and for buffering purposes. A cover is attached to the housing and includes a space for buffering purposes.

Abstract: An air valve connecting device or attachment includes a housing having a tilted inner peripheral surface, a sliding member slidably engaged in the housing and having a pathway for receiving a pressurized air, a gripping device having two casing members slidably engaged with the tilted inner peripheral surface of the housing and having a passage formed in the casing members, and an inflation valve engageable into the passage of the casing members for moving the casing members into the housing and for allowing the casing members to be forced toward each other with the tilted inner peripheral surface of the housing and in order to grasp the inflation valve with the casing members.

Abstract: A roof-rack mechanism includes one or more retaining devices attached to a track, and a lock device engaged with the track and the retaining device for detachably attaching the retaining device to the track. The retaining device includes a base member, and a bracket attached to the base member and mounted on the track. The bracket includes a recess formed between two legs for engaging with the track, and the lock device is engaged with the track and the legs of the bracket. The retaining device includes two flaps engaged onto the legs of the bracket and secured to the legs and the track with the lock device. The retaining device includes a cover pivotally attached to the base member with a coupler.

Abstract: A hand pump includes a piston slidably engaged in a housing and coupled to a piston rod, a handle having a compartment for receiving the piston rod at an inwardly folding position and having a guiding passage formed in one of the two end portions of the handle, a stud extended from a middle portion of the handle and having a slot communicating with the passage of the handle for allowing the piston rod to be rotated relative to handle between the inwardly folding position and an outwardly working position where the piston rod is engaged in the stud and perpendicular to the handle, and a control ferrule is attached onto the piston rod for anchoring the piston rod to the housing at the outwardly working position.

Abstract: An air valve connecting device or attachment includes a housing having an inlet barrel, a sliding member slidably engaged in the housing and having an upper portion extendible out of the housing, the sliding member includes a pathway for selectively aligning with the inlet barrel, a catching element is attached to the sliding member, a gasket is engaged in the catching element, and an inflation valve is engageable into the gasket for depressing the gasket and the catching element and the sliding member to engage into the housing and for moving the sliding member out of the housing, and the inflation valve is detachable from the housing by depressing the sliding member into the housing.

Abstract: A tool combination includes a housing having a casing engaged in a housing and having two chambers formed in the end portions and two spaces formed in the upper and the bottom portions of the housing, one or more tool elements pivotally attached to the housing with an axle and foldable and engageable into the chambers and the spaces of the housing, and one or more tool pivotally attached to the casing and foldable and engageable into the casing with a spindle which is perpendicular to the axle for allowing many more tool elements and tool members to be received and engaged in the housing and the casing and to be easily carried and operated by the user.

Abstract: A tilting inversion exerciser includes a table rotatably supported on a supporting stand, a foot support attached to an extension of the table, a carrier attached to the extension, and a foot retaining device having a lever pivotally attached to the carrier, a foot anchor device attached to the lever and movable toward and away from the foot support of the extension, a latch member attached to the lever for engaging with the carrier and for adjustably anchoring the lever and the foot anchor device to the foot support of the extension at a selected angular position, and a lock device for locking the latch member to the lever and for giving some security to the user while conducting the inversion exercises.

Abstract: A tilting inversion exerciser includes a carrier pivotally attached to a supporting stand for mounting a supporting table and for supporting a user, the supporting table includes a number of grooves, and a massage member is engaged with either of the grooves of the supporting table for attaching to the supporting table and for selectively engaging with the user to selectively massage the user. The massage member includes a catch engageable through the grooves of the supporting table for attaching to the supporting table, the catch is coupled to the massage member with a reduced neck member. The catch includes a length (L) greater than the width (D) of the grooves of the supporting table for engaging with the supporting table.

Abstract: An air pump device includes a housing having a barrel, a gasket engaged in the housing and having a cavity for engaging with an inflation valve, a pumping mechanism coupled to the barrel for generating and supplying a pressurized air to the barrel and the housing, the barrel includes an outer peripheral recess communicating with the chamber of the barrel for receiving the pressurized air from the barrel, and a pressure gauge includes a ring member engaged onto the barrel and includes an inlet formed in the pressure gauge and communicating with the outer peripheral recess of the barrel for receiving the pressurized air from the barrel and for indicating a pressure in the chamber of the barrel.

Abstract: An adjustable barbell or dumbbell or exercise device includes a handle having an end member, a spring biased latching element engaged in the end member, a weight member attached onto the end member and having an aperture for engaging with the spring biased latching element and for anchoring the weight member to the end member, a button is slidably engaged in the weight member for selectively depressing the spring biased latching element into the end member and for disengaging the spring biased latching element from the weight member and for allowing the weight member to be engaged onto and disengaged from the end member of the handle. The other outer weight members are attachable onto the weight member in series.

Abstract: An air valve connecting device or attachment includes a housing having an inlet barrel, a sliding member slidably engaged in the housing and having an upper portion extendible out of the housing, the sliding member includes a pathway for selectively aligning with the inlet barrel, a catching element is attached to the sliding member, a gasket is engaged in the catching element, and an inflation valve is engageable into the gasket for depressing the gasket and the catching element and the sliding member to engage into the housing and for moving the sliding member out of the housing, and the inflation valve is detachable from the housing by depressing the sliding member into the housing.

Abstract: A roof-rack mechanism includes one or more retaining devices attached to a track, and a lock device engaged with the track and the retaining device for detachably attaching the retaining device to the track. The retaining device includes a base member, and a bracket attached to the base member and mounted on the track. The bracket includes a recess formed between two legs for engaging with the track, and the lock device is engaged with the track and the legs of the bracket. The retaining device includes two flaps engaged onto the legs of the bracket and secured to the legs and the track with the lock device. The retaining device includes a cover pivotally attached to the base member with a coupler.

Abstract: An air valve connecting device or attachment includes a housing having an inlet mouth, a sliding member slidably engaged in the housing and extendible out of the housing, the sliding member includes two pathways and two chambers communicating with each other, two gaskets are engaged into the chambers of the sliding member respectively for engaging with different inflation valves, and the outer peripheral walls for forming the chambers of the sliding member are compressible to engage with the gaskets and to grasp and retain the inflation valves and the gaskets in the chambers of the sliding member respectively when either of the outer peripheral walls is engaged into the housing.

Abstract: An adjustable barbell or dumbbell or exercise device includes a handle having two end members, two carriers attached to the end members of the handle respectively, and a weight member having one or more latch members for detachably attaching to the end member of the handle, and a lock member slidably attached to the weight member and having a tongue for engaging with the carrier and for locking the weight member to the handle when the latch members of the weight member are rotated relative to the carrier, the other weight members are attachable to the weight member with the other latch members and the other lock member without supporting the weight members in a supporting base.

Abstract: An air valve connecting device or attachment includes a housing having an inlet mouth, a gasket engaged into the housing for engaging with an inflation valve, a casing engaged in the housing for compressing the gasket to grasp the inflation valve to the housing, and the casing includes a compartment communicative with the gasket for engaging with a valve piece which selectively blocks the casing, a spring biases the valve piece to engage with the casing, an actuator is engageble with the casing for compressing the gasket to grasp the inflation valve to the housing, and the actuator includes a valve member for preventing an air leaking problem from being occurred by the inflation valves.

Abstract: A hand pump includes a base having an inlet opening and an outlet opening, a manual pump disposed on the base and communicating with the inlet opening of the base, a receptacle disposed on the base and communicating with the outlet opening of the base, a casing disposed on the receptacle and having a passage coupled to the outlet opening of the base and having a channel coupled to the receptacle and having a pathway formed between the passage and the channel of the casing, and an outlet hole communicated with the channel of the casing, a valve shank is slidably engaged in the channel of the casing for selectively blocking and sealing the outlet hole of the casing.

Abstract: A hand pump includes a piston slidably engaged in a housing and coupled to a piston rod, a handle having a compartment for receiving the piston rod at an inwardly folding position and having a guiding passage formed in one of the two end portions of the handle, a stud extended from a middle portion of the handle and having a slot communicating with the passage of the handle for allowing the piston rod to be rotated relative to handle between the inwardly folding position and an outwardly working position where the piston rod is engaged in the stud and perpendicular to the handle, and a control ferrule is attached onto the piston rod for anchoring the piston rod to the housing at the outwardly working position.

Abstract: A tool combination includes a housing having a casing engaged in a housing and having two chambers formed in the end portions and two spaces formed in the upper and the bottom portions of the housing, one or more tool elements pivotally attached to the housing with an axle and foldable and engageable into the chambers and the spaces of the housing, and one or more tool pivotally attached to the casing and foldable and engageable into the casing with a spindle which is perpendicular to the axle for allowing many more tool elements and tool members to be received and engaged in the housing and the casing and to be easily carried and operated by the user.