Abstract: The present invention consists in an anchoring device (a) for fastening laces which, in general terms, comprises a structure with a supporting base (4) and a pair of overlapping throats (14) (16) which can hold sections of a fastening lace (b); the bottom throat (14) forms a reel (12) able to hold a winding section of the lace (b) with retention ledges (21), and the bottom throat (16) forms another reel (12) with retention means (19) for the same lace (b); inside reel (12) there is an anchoring means (5) for one end of the lace (b), which applied to eyelets, has an exit (9) and an entry (11) on said supporting base (4). This anchoring device (a) replaces tying laces with knots, which are generally unsafe and difficult to tie, and which ties laces safely preventing them from loosening. It is very easy to manipulate, enabling the user to use only one hand.

Abstract: This injecting unit (1) comprises a tubular body (2) with a receptacle (6) containing a solution; this receptacle (6) is delimited by an impelling plunger (4) and a drillable bottom (5); the drillable bottom (5) faces a perforating means (7) communicated with an injection nozzle (3); the impelling plunger (4) can be connected to automatic or manual action rods (10). Therefore, the injecting unit (1) may be used both in machines and devices [dispensers, fractionators, mixers, dosing apparatus] and manually. The rod (10) may include stroke stops (14) which allow dispensing medication in doses.

Abstract: The present invention is related to a demountable tire rim (1) with a spare inner wheel (3) with antifriction systems which allow running with tubeless tires, without their deterioration; the demountable tire rim (1) comprises two complementary annular parts (4)(5) provided with reciprocal threaded coupling means (10). The body of the demountable tire (1) comprises two complementary annular parts (4)(5) which consist of a first part (4) and a second part (5). Both complementary annular parts (4)(5) are provided with each side holding rims (6) (13) for the tire (2). The modifications of the tires (2) have the purpose of adapting them to run under flat condition and determine a guided movement on it, and in relation to the tire rim, it decreases the rotating displacement on it.