Support spring blocking structure, and spring-structure combination

Support spring blocking structure (1, 10) for, and in combination with, a spring support,

• wherein the spring support comprises
• means for defining an essentially tubular housing (8, 8a, 8b, 8c);
• a spring (15) located in the housing;
• a spring plate (7) bearing against one end of the spring,
• said means for defining the tubular housing having abutment means (8b) for supporting the other end of the spring;
• means (16) for coupling a load (L) to the spring plate which upon application of the load, tends to deflect the spring from a quiescent position to a deflected position;
• the means for defining the tubular housing being formed with an opening (8e) extending in the direction of deflection of the spring;
• and wherein the support spring blocking structure (1, 10) comprises
• a plurality of superposed holding plates (2, 9), stacked above each other, positionable in interfering relation with respect to the spring plate (7), and movable out of interfering relation with respect thereto;
• and a plate holder structure (1a, 10a) selectively separable from and attachable to said means for defining said essentially tubular housing (8, 8a, 8b, 8c) and engageable in the opening (8e) of the means defining the essentially tubular housing, said plate holder structure securing said holding plates (2, 9) in superposed, stacked relation;
• and wherein
• said plate holding structure and said housing plates are dimensioned and located for non-rotatable sliding movment of said holding plates in said plate holding structure;
• wherein the holding plates (2, 9) each define a holding plate surface;
• essentially rectangular notches or recesses (2a, 9a) are formed on two opposite regions of the holding plates,
• and wherein the plate holder structure comprises an elongated element extending over the length of the stacked holding plates, and having at least one engagement portion fitting against an edge surface of the plate and within, and engaging said notches or recesses (2a, 9a) of the holding plates.