Abstract: The contact switching device includes a first terminal, a first contact, a second terminal, and a base. The first contact is attached to the first terminal. The base includes a first attachment portion, a second attachment portion, and a groove portion. The first terminal is attached to the first attachment portion. The second terminal is attached to the second attachment portion. The groove portion is arranged between the first attachment portion and the second attachment portion. The groove portion has a shape in which the inside is larger than the entrance.

Abstract: The contact switching device includes a first terminal, a first contact, a second terminal, and a base. The first contact is attached to the first terminal. The base includes a first attachment portion, a second attachment portion, and a groove portion. The first terminal is attached to the first attachment portion. The second terminal is attached to the second attachment portion. The groove portion is arranged between the first attachment portion and the second attachment portion. The groove portion has a shape in which the inside is larger than the entrance.

Abstract: A differential pressure and pressure transmitting device includes a pressure detecting portion and a rupture state detecting portion. The pressure detecting portion includes a first diaphragm that receives indirectly a pressure of a process fluid and that transmits a pressure, a second diaphragm that receives directly a pressure of a process fluid, and an insulating fluid-filled portion positioned between the first and second diaphragms and filled with an insulating fluid, and provided with a pair of electrodes on a periphery thereof. The rupture state detecting portion applies an electropotential to the electrodes to measure the electrical conductivity of the insulating fluid and to monitor for a rupture of a diaphragm.

Abstract: A differential pressure and pressure transmitting device includes a pressure detecting portion and a rupture state detecting portion. The pressure detecting portion includes a first diaphragm that receives indirectly a pressure of a process fluid and that transmits a pressure, a second diaphragm that receives directly a pressure of a process fluid, and an insulating fluid-filled portion positioned between the first and second diaphragms and filled with an insulating fluid, and provided with a pair of electrodes on a periphery thereof. The rupture state detecting portion applies an electropotential to the electrodes to measure the electrical conductivity of the insulating fluid and to monitor for a rupture of a diaphragm.

Abstract: A device for preventing loss of golf tees in which, using a crude rubber or elastic resin material component, an upper side male bushing, which is provided at the center with a through hole into which a golf tee is inserted and held therein, and a bottom side female bushing, which can be fit on the shaft part of the above-described upper side male bushing, are provided; and one sheet of or a plural sheets of overlapping waterproof, lightweight loss prevention components, each of which is formed in a flower petal shape or wing shape or the like and has a through hole for the shaft part of the upper side male bushing, is/are provided between the upper side male bushing and the bottom side female bushing.

Abstract: To develop and provide a device for preventing loss of golf tees that makes it hard to lose a golf tee, reduces the impact on the tee itself during tee shots, makes it easier to find golf tees that have gone flying, and furthermore, when the golf tee is put in one's pocket, does not cause injuries due to the projecting part at the tip of the golf tee.