Support

A support comprising

• a support pipe means defining an external thread and a pair of elongated holes at an upper end portion thereof, the elongated holes penetrating from a first outer peripheral surface of the support pipe means on one side thereof to a second outer peripheral surface of the support pipe means on another side thereof and extending in an axial direction of the support pipe means;
• a support ring means having an internal thread formed therein, the internal thread of the support ring means being engageable with the external thread of the support pipe means such that the support ring means is movable in the axial direction;
• a rotary operation handle means fitted to the support ring means;
• a primary insertion pipe means having a lower end portion movably insertable into the support pipe means and defining plural pairs of pin holes at intervals in the axial direction of the primary insertion pipe means which penetrate from a first outer peripheral surface of the primary insertion pipe means on one side thereof to a second out peripheral surface of the primary insertion pipe means on another side thereof;
• one or more secondary insertion pipe means, each of the secondary insertion pipe means defining plural pairs of pin holes intervals in an axial direction of the secondary insertion pipe means which penetrate from a first outer peripheral surface of the secondary pipe means on one side thereof to a second outer peripheral surface of the secondary pipe means on another side thereof, each of the secondary insertion pipe means being formed so that a lower end portion of the secondary insertion pipe means is insertable into an upper end portion of another insertion pipe means so as to form an upper secondary insertion pipe means and an adjacent lower insertion pipe means, the pairs of pin holes of each upper secondary insertion pipe means being positioned so as to be matchable with the pairs of pin holes of the adjacent lower insertion pipe means, axes of the pairs of pin holes formed in each of the secondary insertion pipe means being deviated by 90.degree. relative to each other in a circumferential direction of the secondary insertion pipe means;
• each of the insertion pipe means including an insertion pipe and a receiving plate secured to an upper end of the insertion pipe, the receiving plate defining a hole at a central portion thereof and having an inner diameter substantially the same as the inner diameter of the insertion pipe, such that an annular gap is formed between an outer diameter of the insertion pipe of each upper secondary insertion pipe means and an inner diameter of the insertion pipe of the adjacent lower insertion pipe means and between an outer diameter of the insertion pipe of each upper secondary insertion pipe means and an inner diameter of the hole of the receiving plate of the lower insertion pipe means, when the lower end portion of the upper secondary section pipe means is inserted into the upper end portion of the adjacent lower insertion pipe means;
• a plurality of couplings, each coupling having a cylindrical wedge split into two portions in an axial direction of the coupling, and flange portions formed at the upper ends of the wedge portions so as to outwardly extend in a radial direction of the coupling, each coupling being insertable into at least one of the annular gap;
• an upper support pin removably insertable into each of the pairs of pin holes of the primary insertion pipe means, the support pin having such a length that both ends thereof protrude beyond the pair of elongated holes when the support pin is inserted in one of the pairs of pin holes of the primary insertion pipe means through the pair of elongated holes formed in the support pipe means while the primary insertion pipe means is inserted in the support pipe means, wherein the primary insertion pipe means can be supported by the support pipe means in a manner such that a height of the primary insertion pipe means can be adjusted when both ends of the support pin are placed on an upper end surface of the support ring means;
• and
• at least two lower support pins removably insertable in corresponding pairs of pin holes of an upper secondary insertion means and an adjacent lower insertion pipe means when an upper secondary insertion pipe means is inserted in a lower insertion pipe means and the pairs of pin holes of the upper secondary insertion pipe means are matched with the pairs of pin holes of the lower insertion pipe means, such that the upper secondary insertion pipe means is supported by the lower insertion pipe means.

A support comprising:

• a support pipe means defining an external thread and a pair of elongated holes at an upper end portion thereof, the elongated holes penetrating from a first outer peripheral surface of the support pipe means on one side thereof to a second outer peripheral surface of the support pipe means on another side thereof and extending in an axial direction of the support pipe means;
• a support ring means having an internal thread formed therein, the internal thread of the support ring means being engageable with the external thread of the support pipe means such that the support ring means is movable in the axial direction;
• an insertion pipe means having a lower end portion movably insertable into the support pipe means and defining plural pairs of pin holes at intervals in the axial direction of the insertion pipe means which penetrate from a first outer peripheral surface of the insertion pipe means on one side thereof to a second outer peripheral surface of the insertion pipe means on another side thereof;
• a support pin removably insertable in each of the pairs of pin holes, the support pin having such a length that both ends thereof protrude beyond the pair of elongated holes when the support pin is inserted in one of the pairs of pin holes of the insertion pipe means through the pair of elongated holes formed in the support pipe means while the insertion pipe means is inserted in the support pipe means, wherein the insertion pipe means can be supported by the support pipe means in a manner such that a height of the insertion pipe means can be adjusted when both ends of the support pin are placed on an upper end surface of the support ring means, the support pin having an external thread portion formed at one end, and a plate portion formed at one end of the external thread portion, the plate portion having a width that is larger than an outer diameter of an opposite end of the support pin;
• and
• a rotary operation handle means fitted to the support ring means, the rotary operation handle means having at least one rotary operation handle with a first end thereof rotatably supported by an outer peripheral portion of the support ring means, the rotary operation handle including a round pipe member and an internal thread means formed in an inner peripheral portion at a second end the rotary operation handle opposite the first end, such that the support pin is insertable into the rotary operation handle from the second end in a manner that the external thread of the support pin is engaged with the internal thread means of the rotary operation handle so as to be removably held by the rotary operation handle.