摘要:
A fixing element of metal, in particular for fixing facing panels, has a slotted expansible sleeve arranged to be expanded into an undercut of a drilled hole and having an inner bore with a slotted part, and an expander element effecting an expansion of the expansible sleeve and arranged to clamp an article to a facing panel. The expansible sleeve has a plurality of inwardly bent expansible segments having a leading end face and an outer surface and provided with a circumfernetial enlargement arranged on the outer surface of the expansible segment in the region of the leading end face. The expander element is formed as a blind rivet with a rivet shank and a clench head which is drawn with the rivet shank into the slotted part of the inner bore of the expansible sleeve and riveted.
摘要:
The anchor for anchoring in a drilled hole in concrete via a joining composition, includes a threaded bolt consisting of a straight shank portion having an expander cone at one end thereof to be inserted in the drilled hole and a threaded portion at the other end, the expander cone having an outer surface and an end face and widening toward the end face; an expandable sleeve arranged on the threaded bolt enclosing the expander cone and structured to be expanded by the expander cone and a plastic covering on the end face and the outer surface of the expander cone and an adjoining part of the straight shank portion. The complete plastic covering over the expander cone and the adjoining part of the straight shank portion ensures that the joining composition does not bond the expandable sleeve to the threaded bolt, thus hindering subsequent expansion of the expandable sleeve by the expander cone due to crack formation at the drilled hole.
摘要:
The fixing element for securing an article on a base material includes a shank having a shank portion for receiving an article to be fixed, a reduced diameter portion having opposite ends including a free end and an expander cone located at the free end; and an expansible resilient sleeve received on the reduced diameter portion and having at an end remote from the expander cone lugs which are bent inwards at one obtuse angle. The lugs have end surfaces facing a transition shoulder between the other end of the reduced diameter portion and the shank portion. The expansible resilient sleeve has a length greater than the length of the reduced diameter portion. The expandsible resilient sleeve also has, in an unstressed condition, a sleeve outer diameter larger than the shank portion diameter and a sleeve inner diameter larger than said reduced diameter portion diameter.
摘要:
A storage container for recording media such as magnetic tape cassettes, compact discs and the like comprises a housing and a slider member displaceable in the housing between storage and removal positions. A locking arrangement is provided for locking the slider member in the housing in the storage position of the slider member. The locking arrangement includes a resilient flexible bar and a latch formed at one of opposite ends of the resilient locking bar with another of the opposite ends being secured to the slider member. A side arm projects from the resilient flexible bar and engages with the slider member for displaceably supporting the latch on the slide member. The arrangement includes a press button which is supported on the front portion of the slide member and is pressed against the resilient flexible bar to provide for movement of the latch from its locking position to its unlocking position.
摘要:
The device for producing a drilled hole with an undercut includes a drilling tool having a shank and a drilling head faced with a plurality of diamond chips, a drilling tool-holder structured to hold the drilling tool and a rotatable sleeve having an axial throughgoing passage for the drilling tool and the drilling tool-holder and also having a lateral connecting pipe for a cooling and flushing liquid. So that the drilled hole with the undercut can be made in a single working step using the same drilling tool, the shank of the drilling tool (2) is provided with a stop collar (12) and also a cross-sectionally enlarged portion (17). The shank of the drilling tool (2) tapers uniformly toward the drilling head (11) and also tapers uniformly toward the stop collar (12). The shank is provided with a plurality of longitudinally extending helical grooves at least in the vicinity of the enlarged portion so that the enlarged portion can act together with the wall of the drilled hole as a pivot during formation of the undercut.
摘要:
An injection packer for injecting a synthetic resin into cracks in concrete has an elongate plastic body having a longitudinal injection channel, an injection nipple arranged at the rear end of the plastic body and communicating with the injection channel, and a sealing cuff made of a plastic material which is softer than a material the plastic body is made of, and fitted in a positive inter-engagement manner around the front end of the plastic body.
摘要:
A device for forming an undercut in a drill hole includes a drilling tool having a shank receivable in a chuck of a drilling machine and having a convex collar supported on a corresponding concave bearing surface of a bearing element of the device. The bearing element has a bore that communicates the bearing surface with an opening which communicates with a source of a lubricant liquid. The collar has at least one groove for conducting the liquid into the drill hole to the drill bit head of the tool.
摘要:
A driving-in device for fixing an anchor in a hole with an undercut and comprising a drill adapted to be received in a chuck of an impact drilling machine, and a drive-in sleeve-shaped member secured to the drill for joint rotation therewith. The drive-in sleeve-shaped member has at an end thereof remote from the end at which it is secured to the drill, a bolt portion that engages a threaded sleeve member of the anchor to screw it over a threaded portion of an expanding bolt to displace an expansible sleeve over an expander portion of the threaded bolt.
摘要:
A container for receiving a cassette with a tape-like recording medium, and comprising a rectangular housing, a transporting slide member for supporting the cassette and movable along the side wall of the housing for advancing the cassette to a position at which the cassette is removed and a spring supported in the housing for advancing the transporting slide member to the position at which the cassette is removed. A retaining arrangement is provided for retaining the transporting slide member. The retaining arrangement includes a leaf spring secured to the slider member, extending in a direction of movement thereof, and having a free end, a tooth secured at the free end of the leaf spring for engaging the housing to retain the transporting slide member therein, and a finger-actuatable push-button for releasing the transporting slide member upon application of finger pressure to the push-button. A counter-supporting member is secured to a portion of the side wall of the housing. A snap hook is arranged on the side of the push-button opposite the portion of the side wall of said housing to which the counter-supporting member is secured, for snapping over the counter-supporting member for holding the push-button in a disengaged position thereof and for snapping under the counter-supporting member when the transporting slide member is advanced into the housing.
摘要:
A dental prosthesis comprises an element fixed in a mouth, a removable dental porsthesis component placed on the element, and a removable connection of the dental prosthesis component with the element and including vertical groove formed in an adjacent surface in each of the element and the component, the grooves being located immediately opposite to one another and open into one another, the connection further including a resilient friction element engaging in the grooves.