106results about How to "Increase the extension length" patented technology

A golf club head includes a striking plate component and a rear-assembling component mechanically connected thereto. The striking plate component provides with a striking face and a rear-connecting wall. The rear-connecting wall is bent rearward and extended a rearward extended length from the striking face. The rear-assembling component provides with a sidewall corresponding to the rear-connecting wall of the striking plate component. In assembling, the rear-connecting wall of the striking plate component connects with the sidewall of the rear-assembling component by means of an upstanding bent edge or a rear-assembling flange such that the rear-connecting wall separates the striking face from the rear-assembling component for permitting elastic deformation.

A lens barrel has its collapsed length which can be further decreased and its extended length which can be further increased. A photographic apparatus incorporates the lens barrel into its body. A lens barrel is equipped with a first gear which is rotatably supported by a straight-ahead key ring and rotates being driven by rotation of a middle tube and a second gear which receives driving force from the first gear and retracts a second lens group to a predetermined retracted position off the optical axis of a zoom lens during collapse and advances the second lens group onto the optical axis during extension. The second gear lacks teeth in that part which faces the first gear when the second lens group is at the retracted position during collapse. Consequently, the first gear runs idle while facing that part thereby holding the second lens group at the retracted position.

A vehicle occupant safety system has at least one restraint device having at least one adjustable parameter, a vehicle seat having at least one seat sensor detecting the sitting position of a vehicle occupant, a seatbelt system having at least one belt extension sensor detecting the belt extension length, and a control unit determining from the values from the seat sensor and from the belt extension sensor whether a vehicle occupant is in a forward-leaning position. The control unit then specifies the value of the adjustable parameter of the restraint device as a function of a forward-leaning position of the vehicle occupant.

Disclosed is a valve arrangement for underground control of a fluid flow and an associated method, the arrangement including a valve having a valve housing containing fluid control means for controlling a flow of fluid through pipe means arranged below the surface of the ground, where the fluid control means is actuated by means of mechanical manipulation of an operating device of the valve and the operating device is coupled to the fluid control means, the valve having valve identification means including data regarding the specific valve type, where the valve arrangement further includes an extension device including an extension device housing surrounding an extension rod, where the extension rod is rotatably supported by the extension device housing, where the extension rod is mechanically coupled to the operating device to enable the mechanical manipulation being performed at the ground surface, and the extension device further includes dedicated connection means extending between a valve end and a ground surface end of the extension device, and the valve end is arranged at the valve housing and the ground surface end is arranged at the opposite end of the extension device, where the dedicated connection means enable that the data regarding the specific valve type may be communicated to the ground surface.

The invention discloses a mobile terminal. The mobile terminal comprises: a first terminal body and a second terminal body; a flexible screen which covers the surfaces of the first terminal body and the second terminal body; a telescopic structure, wherein the first terminal body is connected with the second terminal body through the telescopic structure, under the condition that the angle betweenthe first terminal body and the second terminal body is a first angle, the telescopic structure is in a first state, and the length of the telescopic structure is a first length; and under the condition that the angle between the first terminal body and the second terminal body is a second angle, the telescopic structure is in a second state, and the length of the telescopic structure is a secondlength. When the telescopic structure is in the second state, the relative distance between the first terminal body and the second terminal body can be increased when the first terminal body and thesecond terminal body are unfolded, so that the flexible screen is prevented from wrinkling at the folded part when in the unfolded state, and the display effect of the display screen is improved.

The invention discloses a down-hole hydraulic power pulse staged fracturing permeability-increasing device and method. The device comprises a down-hole pulse fracturing device, a controllable hydraulic packer, a continuous oil pipe, a fluid control valve and a fracturing truck. The fracturing truck is connected with the controllable hydraulic packer and the down-hole pulse fracturing device through the continuous oil pipe. The controllable hydraulic packer is connected to the back end of the down-hole pulse fracturing device. The fluid control valve is arranged at the connecting opening of the continuous oil pipe. The down-hole pulse fracturing device comprises a first cylinder body, a second cylinder body, a mandrel, a sliding sleeve, a sealing ring, a spring, a nozzle and the like. Under the condition that certain construction parameters such as pumping pressure and displacement are provided for the ground fracturing truck, large-displacement low-frequency pulse fluid is generated at the shaft bottom and is injected in, and a water hammer effect is formed. The down-hole hydraulic power pulse staged fracturing permeability-increasing device is simple in structure, durable and easy to adjust, low-frequency large-displacement pulse energy can be generated, the construction technology is simple, pulse energy can be well used for breaking rocks, net-shaped complex cracks with wide extending ranges are generated, and reservoir stratum permeability is effectively improved.

The invention provides a method of forming fractures by means of hydrofracturing assisted by alternate spraying of high- and low-temperature fluids in deep hot dry rock. The method herein includes: setting out a well network, and performing primary hydrofracturing to form main fractures; injecting a high-temperature high-pressure fluid and low-temperature water alternately into the main fractureswithin short alternate time; forming micro fractures in the rock at the surface of the main fractures under the thermodynamic action of a great temperature difference and the impact action of a jet; allowing multilevel fracturing to enable the micro fractures to further expand and form more micro fractures under the action of a low-temperature waterborne fracturing fluid and the action of high pressure; repeating until the main fractures and the micro fractures are in mutual lap joint and communication so that a fracture cluster and / or a fracture belt is formed between injection wells and production wells; injecting a sand-carrying fluid, a proppant and a displacing fluid, and closing the wells to complete fracture forming so as to construct an efficient heat exchange reservoir. The methodenables the quantity of the fractures to be significantly increased via the thermal stress action of the temperature difference, so that a fracture network is formed; heat exchange efficiency of a heat storage space is improved.