Patent Description:
Cast in place anchors are intended to be cast into concrete, and to provide an anchor point for a rod once the cast concrete has hardened. Some types of cast in place anchors, an example of which is shown in <CIT>, are intended to be nailed to a wooden shuttering before the concrete is cast so as to position the anchor with respect to the concrete body.

Nailing of a cast in place anchor to a wooden shuttering can, in a simple embodiment, be achieved by using a conventional manual hammer. <CIT> describes a pneumatic hammer tool for installing cast in place anchors. Purpose-built manual hammer tools for installing cast in place anchors are known from <CIT>, <CIT>, <CIT>, <CIT>, <CIT>, <CIT>, <CIT>, <CIT>, <CIT>, <CIT>, and <CIT>.

<CIT> describes a hammer-like tool for remotely radially expanding an anchor.

<CIT> discloses an apparatus for driving nails using an impact hammer.

<CIT> discloses an automated power actuated gun having a fastener feeding track with guides for holding a fastener assembly having a plate and attached stud in a firing position.

<CIT> describes an adaptor for a fastener driver assembly, which employs a bi-positionable angle guide assembly mounted to a head having an entry reference surface de fining an opening for a fastener.

<CIT> discloses an adapter to transfer torque, for installing fasteners.

It is an object of the invention to provide means which allow nailing cast in place anchors to a shuttering, in particular wood shuttering, in a particularly easy, reliable, fast and versatile manner.

This object is achieved by a device according to claim <NUM>.

A device for nailing cast in place anchors, in particular to a shuttering, is proposed, the device comprising:.

Accordingly, the device provides an energy transfer mechanism, which transfers hammer energy from the nail gun as an energy source to the cast in place anchor, so as to hammer the cast in place anchor into a shuttering, which can in particular be a wood form shuttering. The ram provides a second accelerated mass, which is actuated by the striker, wherein the striker provides a first accelerated mass.

Cast in place anchors are anchors that are intended to be cast into concrete before the concrete hardens. In particular, a cast in place anchor might have at least one rod retainer for engaging a rod, and at least one nail for penetrating a shuttering, in particular a wood shuttering, so as to fix the rod retainer to the shuttering before the concrete is cast. The rod retainer might have at least on mating thread for engaging a correspondingly threaded rod. Alternatively or additionally, the rod retainer might have a quick lock mechanism that allows the rod to be axially pushed into the rod retainer, but prevents axial withdrawal of the rod from the rod retainer. Such a quick lock mechanism might for example include wedge segments that engage the rod and/or it might include spring elements. The at least one nail could for example have a generally circular cross section, but could also have an elongate, blade-like cross-section. The at least one nail has at least one tip that is able to penetrate the shuttering when hammer blows are imparted on the nail. The at least one cast in place anchor might also have a head, connected to the rod retainer, for anchoring the cast in place anchor within the concrete, in particular if the rod retainer has a sleeve-like outer contour. In a particularly preferred embodiment, the cast in place anchor comprises a metallic rod retainer, a metallic head attached thereto, and a plastic nail holder, in which the rod retainer is embedded, and which holds a plurality of nails, preferably three of them, for penetrating a wood shuttering so as to fix the rod retainer to the shuttering. The tip of the at least one nail might project from the cast in place anchor, or it might be countersunk, before the anchor is nailed to the shuttering.

The housing of the device for nailing cast in place anchors at least partly surrounds the anchor receptacle and/or the ram. The housing could for example include plastic sections and/or metal sections. The cast in place anchor can be inserted into the anchor receptacle. When the cast in place anchor is disposed within the anchor receptacle, the cast in place anchor might be completely embedded in the housing (flush or countersunk), or it might stick out of the housing. In order to temporarily fix the cast in place anchor in the anchor receptacle, at least one snap element or other locking elements might be provided. Advantageously, the housing is narrow in the vicinity of the anchor receptacle in order to provide sufficient clearance to access tight spaces. Communication items, such as reflectors or transducers, for communicating with layout tools or measurement devices (e.g. total stations), might be provided on the device. A holder for a tablet computer might also be provided on the device.

The nail gun abutment provides an interface for connecting the device to a nail gun. In particular, the nail gun abutment might have at least one connector, such as a connector clip or a connector tab, for, preferably releasably, but alternatively also permanently, fixing the nail gun abutment to the nail gun. The nail gun abutment is intended to abut against the nail gun, in particular against the housing of the nail gun, so that when the nail gun (in particular its housing) is displaced, in particular axially forwardly, the nail gun abutment follows this movement due to geometric interlock between the nail gun (in particular its housing) and the nail gun abutment.

The nail gun might be for example gas actuated, powder actuated or pneumatically actuated. Preferably, it is battery actuated.

The ram is intended to transfer energy from the striker of the nail gun to the cast in place anchor, in particular to the at least one nail thereof. Preferably, the ram consists, at least partly, of a metal material. The ram can be axially guided at the housing of the device. In particular, the ram can be axially displaceable with respect to the nail gun abutment. In particular, the striking surface is intended for striking the at least one nail of the cast in place anchor, directly or also indirectly, for example via the head of the cast in place anchor. The striking surface might be flat or also non-flat, in particular in order to correspond to the geometry of the cast in place anchor. The striker abutment is intended to be located face-to-face with respect to the striker, so that the striker hits the striker abutment when the nail gun is fired. In particular, the striker abutment can be intended to be inserted into a muzzle of the nail gun. In particular, the striker and the ram are arranged coaxially when the device is connected to the nail gun.

Throughout this document - wherever the terms "axially", "longitudinally", "radially" and "circumferentially" are used, they can refer, in particular, to the longitudinal axis of the ram.

It is particularly preferred that the striking surface is disposed at a proximal end of the ram and the striker abutment is disposed at a distal end of the ram, wherein the proximal end of the ram and the distal end of the ram, respectively, are opposite ends of the ram. This can allow to keep the ram particularly short and can thus provide a particularly compact device.

According to a preferred embodiment, the device comprises a ram return spring, which rests on the ram, for biasing the ram axially away from the anchor receptacle and/or towards the striker. The ram return spring can provide that the ram rests on the striker in a particularly easy and reliable manner, thereby providing particularly efficient energy transfer. The ram return spring can consist of a plurality of separate spring elements, or it may comprise a single spring element only.

Advantageously, the device comprises an unlocking pushrod, which is axially displaceable with respect to the housing and with respect to the nail gun abutment, wherein the unlocking pushrod has an anchor probe surface located at the anchor receptacle and a lock abutment for abutting against a proximity plunger of the nail gun. Such an unlocking pushrod allows probing for the presence of an anchor within the anchor receptacle in a particularly efficient manner. Depressing of the proximity plunger can unlock a lock provided in the nail gun, which when locked prevents the nail gun from being fired. Accordingly, a cast in place anchor located within the anchor receptacle might act against the anchor probe surface of the unlocking pushrod so as to displace the unlocking pushrod, causing the lock abutment of the unlocking pushrod to act against the proximity plunger of the lock provided in the nail gun. The unlocking pushrod might be a simple bar, but it might also have more complex shapes. In particular, the unlocking pushrod can extend parallel to the ram. The unlocking pushrod is preferably located within the housing at least in parts. The lock provided in the nail gun can prevent firing of the nail gun when the anchor receptacle is empty. The anchor probe surface can be a single continuous surface, but it can also consist of at least two separate partial surfaces. These partial surfaces might e.g. be formed at the tips of anchor probe pins. The unlocking pushrod and the ram are preferably arranged coaxially, at least in regions.

Preferably, the anchor probe surface is disposed at a proximal end of the unlocking pushrod and the lock abutment is disposed at a distal end of the unlocking pushrod, wherein the proximal end of the unlocking pushrod and the distal end of the unlocking pushrod, respectively, are opposite ends of the unlocking pushrod. This can allow to keep the unlocking pushrod particularly short and can thus provide a particularly compact device.

As already hinted at above, the unlocking pushrod can advantageously comprise at least one anchor probe pin, wherein the anchor probe surface is arranged at the at least one anchor probe pin, more preferably at the tip thereof. Preferably, the unlocking pushrod can comprise a plurality (e.g. two) anchor probe pins. In this case, each of the anchor probe pins can comprise a partial surface of the anchor probe surface. Preferably, the at least one anchor probe pin penetrates the striking surface of the ram, which can provide a particular compact and/or robust device. Preferentially, the ram can form a guide for the at least one anchor probe pin.

Advantageously, the unlocking pushrod comprises at least one tube that surrounds the ram. This can provide a particular compact device.

It is particularly preferred that the unlocking pushrod has at least one guide sleeve for guiding the ram. This can keep the ram straight and prevent it from buckling as it is driven by the nail gun, in a particularly easy and reliable manner. The at least one guide sleeve can e.g. be a proximal sleeve or/and a distal sleeve.

The ram return spring can, advantageously, rest on the unlocking pushrod, in particular at a proximate end of the ram return spring. This can further facilitate the design of the device.

It is particularly preferred that the nail gun abutment can be axially advanced towards the housing. Advancing the nail gun abutment towards the housing can operate the unlocking pushrod for probing for the presence of an anchor within the anchor receptacle in a particularly easy manner. Moreover, a particularly compact device can be obtained. For example, the nail gun abutment and the housing can form a telescope arrangement, which might additionally guide the nail gun abutment as it is axially advanced towards the housing.

Preferably, the device can further comprise an abutment return spring for pushing the nail gun abutment away from the housing. Accordingly, the nail gun abutment is spring mounted on the housing. The abutment return spring is compressed when the nail gun abutment is advanced towards the housing, so as to return the nail gun abutment to its original, idle position when the nail gun abutment is released. This can further facilitate handling. The abutment return spring can consist of a plurality of separate spring elements, or it may comprise a single spring element only.

Advantageously, the ram has a mass ranging from <NUM> to <NUM>. Thus, the ram has a weight that is greater than or equal to <NUM> and smaller than or equal to <NUM>. This can be advantageous in view of energy transfer and robustness.

The device can, in another preferred embodiment, comprise a feed tube for feeding cast in place anchors into the anchor receptacle. In particular, the feed tube can be connected to the housing. The feed tube can further facilitate operation of the device. The feed tube might have an anchor insertion opening that can e.g. be located in the vicinity of the nail gun abutment, and an output opening that is located adjacent to the anchor receptacle. In particular, the feed tube might extend generally parallel to the ram. In operation, cast in place anchors might be dropped into the feed tube, and the feed tube guides the cast in place anchors into the anchor receptacle. Additionally or alternatively, the device might comprise a magazine for accommodating a plurality of cast in place anchors to be successively fed into the anchor receptacle. Accordingly, the magazine can take up a plurality of cast in place anchors, and the device is configured to feed these cast in place anchors successively into the anchor receptacle.

At least one guide ring (preferably two of them) may be advantageously arranged at the nail gun abutment, for axially guiding the nail gun abutment at the feed tube, wherein the feed tube extends through the guide ring. This can further improve reliability.

The invention also relates to a system comprising a device as described and a nail gun having a striker, wherein the nail gun is positioned at the nail gun abutment so that the striker faces the striker abutment of the ram. In particular, the nail gun, more particularly the housing of the nail gun, abuts against the nail gun abutment. Preferably, a proximity plunger of the nail gun faces the lock abutment of the unlocking pushrod. Accordingly, the nail gun is arranged with respect to the device in its intended operation position.

Preferentially, the ram return spring pushes the ram into contact with the striker, which is the intended configuration. Preferentially, constant contact between the striker and the ram is provided by the ram return spring.

Advantageously, the striker has a mass ranging from <NUM> to <NUM>, i.e. the mass of the striker is greater than or equal to <NUM> and smaller than or equal to <NUM>. This can be advantageous in view of energy transfer and robustness.

The nail gun is preferably configured to provide a setting energy of <NUM> Joules or more on the striker, which can allow particularly efficient installation of usual cast in place anchors.

The system may further comprise a cast in place anchor, which is positioned within the anchor receptacle. Accordingly, the cast in place anchor is positioned as intended, awaiting to be installed by means of the device and the nail gun. The distance between the striking surface and the cast in place anchor positioned within the anchor receptacle can preferentially range from <NUM> to <NUM>, when the cast in place anchor is positioned as intended awaiting to be installed by means of the device and the nail gun, i.e. when the system is in its idle position.

Features that are described here in connection with the device can also be used in connection with the system and features that are described here in connection with the system can also be used in connection with the device.

The invention is explained in greater detail below with reference to preferred exemplary embodiments, which are depicted schematically in the accompanying drawings. Individual features of the exemplary embodiments presented below can be implemented either individually or in any combination within the scope of the present invention.

The figures show an example of a system which comprises, amongst others, a nail gun <NUM> having a housing <NUM> and a striker <NUM> (shown only highly schematically), wherein the striker <NUM> can be axially fired (i.e. moved explosively axially forwardly) with respect to the housing <NUM>. In the present embodiment, the striker <NUM> is battery actuated, but this is an example only and other actuation modes can also be envisaged. The nail gun <NUM> has a trigger <NUM> which causes the striker <NUM> to be fired when the trigger <NUM> is pressed. The nail gun <NUM> further has a lock mechanism comprising a proximity plunger <NUM>, wherein the lock mechanism prevents the striker <NUM> from being fired, even when the trigger <NUM> is pressed, until the proximity plunger <NUM> is depressed into the housing <NUM>. The lock can thus ensure that the striker <NUM> is not fired before the striker is located proximate to a working surface. In the present case, the proximity plunger <NUM> is a sleeve, wherein the striker <NUM> projects into the proximity plunger <NUM>, at least when the striker <NUM> is fired.

The system further comprises a device <NUM> for nailing cast in place anchors <NUM> to a shuttering. The device <NUM> is mechanically connected to the nail gun <NUM> and comprises a nail gun abutment <NUM> and a housing <NUM>, which is mechanically connected to the nail gun abutment <NUM>.

The housing <NUM> is generally tubular and has an anchor receptacle <NUM>, in which a cast in place anchor <NUM> can be positioned.

The nail gun abutment <NUM> is generally tubular. At least one connector for permanently or, advantageously, temporarily connecting the nail gun abutment <NUM> to the nail gun <NUM> is provided on the nail gun abutment <NUM>. This connector could for example include not shown snapping tabs.

The nail gun abutment <NUM> and the housing <NUM> are telescopically nested. In the shown embodiment, the nail gun abutment <NUM> is nested within the housing <NUM>, but this is an example only, and an arrangement in which the housing <NUM> is nested within the nail gun abutment <NUM> is also feasible. The device <NUM> further comprises an abutment return spring <NUM>. The abutment return spring <NUM> is a compression spring and can be in particular a helical spring. The abutment return spring <NUM> is arranged between the housing <NUM> and the nail gun abutment <NUM> so as to bias the nail gun abutment <NUM> away from the housing <NUM>. Accordingly, the abutment return spring <NUM> rests on one side on the housing <NUM> and on the other side on the nail gun abutment <NUM>, and the abutment return spring <NUM> tends to telescope out the arrangement consisting of the nail gun abutment <NUM> and the housing <NUM>.

The device <NUM> further comprises an elongate ram <NUM>, which extends into the housing <NUM> and into the nail gun abutment <NUM>, and which is axially displaceable with respect to the housing <NUM> and with respect to the nail gun abutment <NUM>. The ram <NUM> has a proximal end <NUM>, which is located within the housing <NUM>, namely adjacent to the anchor receptacle <NUM>, and a distal end <NUM>, which is located remote from the anchor receptacle <NUM>, wherein the proximal end <NUM> and the distal end <NUM> are opposite ends of the ram <NUM>. The longitudinal axis of the ram <NUM> extends through the proximal end <NUM> and through the distal end <NUM>. The distal end <NUM> of the ram is arranged within the nail gun abutment <NUM>.

The ram <NUM> has a striking surface <NUM> which is intended for striking the cast in place anchor <NUM> that is arranged within the anchor receptacle <NUM>, so as to nail the cast in place anchor <NUM> into a shuttering, in particular a wood shuttering, located adjacent to the anchor receptacle <NUM>. The striking surface <NUM> forms an end face of the ram <NUM> and is located at the proximal end <NUM> of the ram <NUM>. The striking surface <NUM> faces the anchor receptacle <NUM> and is located adjacent to the anchor receptacle <NUM>. In the present embodiment, the striking surface <NUM> is generally flat, since the corresponding hitting surface of the cast in place anchor <NUM> is correspondingly flat, but non-flat geometries of the striking surface <NUM> can also be envisaged.

The ram <NUM> moreover has a striker abutment <NUM>, which is located at the distal end <NUM> of the ram <NUM>. The striker abutment <NUM> points away from the anchor receptacle <NUM>. When the device <NUM> is mounted on the nail gun <NUM> as intended, the striker abutment <NUM> faces the striker <NUM> of the nail gun <NUM> so that striker <NUM> can act against the striker abutment <NUM> to axially drive the ram <NUM> towards the anchor receptacle <NUM> when the striker <NUM> is fired. The ram <NUM> thus provides an energy transfer mechanism to transfer energy from the striker <NUM> to the cast in place anchor <NUM>. In particular, the striker abutment <NUM> can be intended to be placed within the proximity plunger <NUM> of the nail gun <NUM>, with the proximity plunger <NUM> being sleeve-like.

In the present embodiment, the ram <NUM> comprises a head piece <NUM>, which forms the proximal end <NUM> of the ram, and on which the striking surface <NUM> is provided, and an elongate rear piece <NUM>, which forms the distal end <NUM> of the ram <NUM>, and on which the striker abutment <NUM> is provided. The head piece <NUM> and the rear piece <NUM> are non-monolithic with respect to one another, but mechanically fixed to one another. In the present embodiment, mechanical fixation is achieved by means of at least one transverse bolt, but other connections, such as threaded connections or others could also be envisaged.

The device <NUM> further comprises an unlocking pushrod <NUM>, which extends essentially parallel to the ram <NUM>, from the housing <NUM>, in particular from the anchor receptacle <NUM> into the nail gun abutment <NUM>. The unlocking pushrod <NUM> is axially displaceable with respect to the housing <NUM>, with respect to the nail gun abutment <NUM> and with respect to the ram <NUM>.

The unlocking pushrod <NUM> comprises an anchor probe surface <NUM>, wherein the anchor probe surface <NUM> is disposed at a proximal end of the unlocking pushrod <NUM>, wherein the anchor probe surface <NUM> is located adjacent to the anchor receptacle <NUM> and wherein the anchor probe surface <NUM> faces the anchor receptacle <NUM>. The unlocking pushrod <NUM> further comprises a lock abutment <NUM>, which is disposed at a distal end of the unlocking pushrod <NUM>, and which faces away from the anchor receptacle <NUM>. When the device <NUM> is mounted on a nail gun <NUM> as intended, the anchor probe surface <NUM> faces the proximity plunger <NUM> of the nail gun <NUM>, so as to be able to depress the proximity plunger <NUM> so as to unlock the lock of the nail gun <NUM>. The proximal end of the unlocking pushrod <NUM> and the distal end of the unlocking pushrod <NUM>, respectively, are opposite ends of the unlocking pushrod <NUM>.

In the present embodiment, the unlocking pushrod <NUM> comprises at least one elongate anchor probe pin <NUM> (namely two anchor probe pins, by way of example, in the shown embodiment), projecting at the proximal end of the unlocking pushrod <NUM>. The anchor probe pin <NUM> penetrates the head piece <NUM> and the striking surface <NUM> of the ram <NUM> and projects towards the anchor receptacle <NUM>. The anchor probe surface <NUM> is constituted by the end face of the at least one anchor probe pin <NUM>.

In the present embodiment, the unlocking pushrod <NUM> further comprises a proximal sleeve <NUM>, which adjoins the at least one anchor probe pin <NUM>, an intermediate tube <NUM>, which adjoins the proximal sleeve <NUM>, and a distal sleeve <NUM>, which adjoins the intermediate tube <NUM>. The intermediate tube <NUM> thus extends in the middle of the unlocking pushrod <NUM>, i.e. between the proximal end and the distal end thereof and between the proximal sleeve <NUM> and the distal sleeve <NUM>. The at least one anchor probe pin <NUM> projects from the proximal sleeve <NUM>. The lock abutment <NUM> is provided on the distal sleeve <NUM>. The proximal sleeve <NUM> is transverse bolted to the intermediate tube <NUM> and the intermediate tube <NUM> is transverse bolted to the distal sleeve <NUM>.

The proximal sleeve <NUM>, the intermediate tube <NUM> and the distal sleeve <NUM> each surround the ram <NUM>. The proximal sleeve <NUM> and the distal sleeve <NUM> each form a guide sleeve for guiding the ram <NUM>, thus supporting the ram <NUM> against radial buckling when the ram <NUM> is axially driven by the nail gun <NUM>.

The abutment return spring <NUM> surrounds both the ram <NUM>, in particular the rear piece <NUM> thereof, and the unlocking pushrod <NUM>, in particular the intermediate tube <NUM> and/or the distal sleeve <NUM> thereof.

The device further comprises a ram return spring <NUM>, which biases the ram <NUM> away from the anchor receptacle <NUM> towards the striker <NUM>. Due to the action of the ram return spring <NUM>, the striking surface <NUM> is spaced from the cast in place anchor <NUM> that is held within the anchor receptacle <NUM> when the device <NUM> is in an idle state (shown in <FIG>) before the nail gun <NUM> is fired, wherein said spacing is preferably in a range from <NUM> to <NUM>. Additionally or alternatively, due to the action of the ram return spring <NUM>, the ram <NUM> (with its striker abutment <NUM>) may abut against the striker <NUM> in the idle state before the nail gun <NUM> is fired.

On its one (proximal) end, the ram return spring <NUM> rests on the unlocking pushrod <NUM>, in particular on the proximal sleeve <NUM> thereof, and on its other (distal) end, the ram return spring <NUM> rests on the ram <NUM>, for example on a shoulder ring <NUM> provided at the rear piece <NUM> of the ram <NUM>. In the present embodiment, the ram return spring <NUM> is, by way of example, a coil spring that surrounds the ram <NUM>. The ram return spring <NUM> extends within the unlocking pushrod <NUM>, namely within the intermediate tube <NUM> thereof.

The device <NUM> moreover has a feed tube <NUM> for feeding cast in place anchors <NUM> into the anchor receptacle <NUM>. In the present embodiment, the feed tube <NUM> extends parallel to the ram <NUM>, but other orientations could also be envisaged. Two guide rings <NUM> are provided on the nail gun abutment <NUM>, wherein the feed tube <NUM> extends through the guide rings <NUM>. By means of the guide rings <NUM>, the nail gun abutment <NUM> is axially guided on the feed tube <NUM> and thus indirectly axially guided on the housing <NUM>, which is connected to the feed tube <NUM>.

The device <NUM> further comprises a reflector prism <NUM>, which is, in the present embodiment, connected to the feed tube <NUM> by way of example.

In use, the nail gun <NUM> is connected to the nail gun abutment <NUM> of the device <NUM>. A cast in place anchor <NUM> is fed into the anchor receptacle <NUM>, in particular via the feed tube <NUM>, and the device <NUM> is placed at a working surface, which is in particular a surface of a shuttering (e.g. a wood shuttering), so that anchor receptacle <NUM> and the cast in place anchor <NUM> arranged within the anchor receptacle <NUM> are located adjacent to the working surface. The resulting configuration is shown in <FIG>. Intended positioning of the device <NUM> on the working surface could be assisted by the reflector prism <NUM>.

The nail gun <NUM> is then pushed axially towards the working surface and towards the housing <NUM> resting on the working surface. This will cause the nail gun abutment <NUM> that abuts against the housing <NUM> of the nail gun <NUM> to approach the working surface and further cause the arrangement consisting of the nail gun abutment <NUM> and the housing <NUM> to telescope in, thereby compressing the abutment return spring <NUM>. In the process of telescoping-in, the nail gun abutment <NUM> is guided on the feed tube <NUM> by means of the guide rings <NUM>.

The nail gun abutment <NUM>, together with the nail gun <NUM> resting thereon, approaching the housing <NUM> with the cast in place anchor <NUM> located therein will cause the unlocking pushrod <NUM> to become confined between the cast in place anchor <NUM> located in the anchor receptacle <NUM> on the one side and the proximity plunger <NUM> of the nail gun <NUM> on the other side. Eventually, the unlocking pushrod <NUM> abutting on the cast in place anchor <NUM> at the anchor probe surface <NUM> will thus depress the proximity plunger <NUM> at the lock abutment <NUM>, so that the lock mechanism of the nail gun <NUM> becomes unlocked. The resulting configuration is shown in <FIG>.

Subsequently, the trigger <NUM> is operated and the - now unlocked - striker <NUM> of the nail gun is thereby caused to be fired, i.e. to be explosively axially advanced towards the ram <NUM>. This causes the striker <NUM> to hit the striker abutment <NUM> of the ram <NUM>, which causes the ram <NUM> to be pushed axially towards the cast in place anchor <NUM> located in the anchor receptacle <NUM>. Axial advancement of the ram <NUM> will eventually cause the striking surface <NUM> of the ram <NUM> to hit the cast in place anchor <NUM>, which will hammer the cast in place anchor <NUM> into the working surface. The resulting configuration is shown in <FIG>.

After firing of the striker <NUM> and nailing-in of the cast in place anchor <NUM>, the ram return spring <NUM> returns the ram <NUM> back into its original, idle position. The resulting configuration is shown in <FIG>.

Claim 1:
Device (<NUM>) for nailing cast in place anchors (<NUM>), comprising
- a housing (<NUM>), which has an anchor receptacle (<NUM>) for receiving a cast in place anchor (<NUM>),
- a nail gun abutment (<NUM>) for abutting against a nail gun (<NUM>), and
- a ram (<NUM>), which extends into the housing (<NUM>) towards the anchor receptacle (<NUM>), and which is axially displaceable with respect to the housing (<NUM>), wherein the ram (<NUM>) has a striking surface (<NUM>) facing the anchor receptacle (<NUM>) for striking the cast in place anchor (<NUM>) disposed in the anchor receptacle (<NUM>), and wherein the ram (<NUM>) further has a striker abutment (<NUM>) for abutting against a striker (<NUM>) of the nail gun (<NUM>) that is positioned at the nail gun abutment (<NUM>).