Abstract: An electrical connector includes a base, a contact housing plate and a cover. The contact housing plate is coupled to the base and includes an electrical receptacle which is adapted to engage an electrical plug. The cover is also coupled to the base and overlies the contact housing plate. The cover has an inclined surface which extends toward the base and an opening therein forming a recess for receiving the electrical plug that is engageable with the electrical receptacle. The cover also includes a lid, which is movable between an open position and a closed position. When the lid is in the open position, the contact housing plate is exposed, facilitating access to the electrical receptacle. When the lid is in the closed position, the lid protects the electrical plug from debris and dislodgement from the electrical receptacle. The electrical connector may further include a plurality of electrical receptacles and openings for receiving multiple electrical plugs.

Abstract: A dental wrench is described having a structure which permits application of differing torques to the bur securing collet of a dental handpiece and the end cap of the turbine housing in a single wrench assembly. The wrench combines a shaft, for engaging the bur securing collet, supported rotatively in a frame member and secured to a support member which has means for engaging the end cap of the turbine housing. Interlocking means are provided between the support member and the frame member so that the wrench can be rotated as a unitary assembly to secure or remove the end cap of a turbine housing. The interlocking means are releaseable so that the shaft can be rotated independently within the frame member to secure or remove a dental bur in or from the collet of the handpiece housing.