Societe De Prospection Et D'inventions Techniques Spit

Gerard Revol

Jean-Paul Barthomeuf

Maxime Roillet

A coupling () is used for a fuel cartridge () outlet nozzle () designed to supply a compressed gas mounting device with compressed gas and an intake nozzle () on the device's intake system (). The coupling is a single piece formed to ensure a seal and maintain it between the two nozzles () of the cartridge () and the intake system ().

Coupling for compressed gas piston driven nailing and fuel cartridge

A peg for anchoring within a hole having an undercut portion comprises a body (1) with an external end (5) for mounting an element thereon and a tapered internal end (11) widening out towards the inside of the hole, a locking ring (2) formed from segments disposed about the body and intended to pivot within the undercut portion (10). The external diameter of the ring (2) is equal to that of the hole (8). Means (4,14,19) for temporarily immobilizing the segments of the ring are mounted upon the body. Means fixed upon the body may drive the ring (2) into the vicinity of the undercut portion of the hole and radially acting means (4) may cause the segments of the ring (2) to pivot into the undercut portion. A resilient annulus (4), by means of force exerted radially inwardly upon the ring (2), ensures the double function of pivoting the segments of the ring (2) and, prior thereto, temporary axial immobilization thereof in combination with a collar (3), which is provided in accordance with one embodiment of the present invention, for temporarily preventing the pivoting function.

Peg for anchoring in a hole with an undercut portion

A cone expansion wall-plug is provided comprising a shank (1), a spacer (13) disposed about the shank, an expandable socket (4) and, at the end (5) of the shank (1), a cone (3) for expanding the socket (4). In order to be able to secure an object to be fixed against the edge of the anchorage hole formed within a supporting material for housing the wall-plug, the socket (4) includes a compressible zone (8) in the form of a bellows and bent lugs providing expansion and guiding teeth (10). The socket (4) is formed by die-stamping a metal sheet blank.

Cone expansion wall-plug

A suspension peg is provied in which the wire, obtained by die stamping a metal strip and bonding the same, forms a securing eye and has at its end, to be introduced into an anchorage hole, a cylindrical portion formed by two shells and a truncated expansion cone adapted for cooperating with an expandable anchorage socket under the action of a retractive force exerted upon the eye.

Suspension peg

An expansion peg is provided including a tubular socket threaded at one end, and having a split and expandable portion at the other end thereof which is disposed inside the socket. A first wedge intended to come into abutment against the bottom of an anchorage hole and a second wedge detachably secured to the first wedge and intended, under the action of a striking tool, to become disengaged from the first wedge and to cooperate therewith for causing expansion of the split end of the socket, is disposed within the socket and split end portion thereof.

Growing community of inventors

Chateaudouble, France

Gerard Revol