Patents by Inventor Giancarlo Piretti

Giancarlo Piretti has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4915449
    Abstract: A chair comprises a base structure, a seat mounted on the base structure for pivoting about a transverse axis, travel limiting means which define the position of maximum rearward pivoting and the position of maximum forward pivoting of the seat, and resilient means which bias the seat towards its position of maximum rearward pivoting. The travel limiting means enable at least one of the end-of-travel positions to be adjusted.
    Type: Grant
    Filed: May 8, 1989
    Date of Patent: April 10, 1990
    Assignee: Pro-Cord S.r.l.
    Inventor: Giancarlo Piretti
  • Patent number: 4909472
    Abstract: A pivoting support for chairs, seats and the like comprises a main support member which is connected to the base structure of the chair and a seat support member which is pivotably connected to the main support member with the interposition of an auxiliary support member. The latter is articulated to the main support member about a first horizontal axis and to the seat support member about a second horizontal axis parallel to and in front of the first horizontal axis. First resilient means are interposed between the main support member and the seat support member for biassing the seat support member towards a position in which it is rotated upwardly relative to the auxiliary support element. Second resilient means are also interposed between the main support member and the auxiliary support member for biassing the auxiliary support member towards a position in which it is rotated upwardly relative to the main support member.
    Type: Grant
    Filed: May 10, 1988
    Date of Patent: March 20, 1990
    Assignee: Pro-Cord S.r.l.
    Inventor: Giancarlo Piretti
  • Patent number: 4848245
    Abstract: A table comprises a table-top and a plurality of legs fixed to the table-top by means of a plurality of joints which are also used for supporting and interconnecting a series of horizontal cross members extending beneath the table-top. Each joint comprises a base element fixed to the lower surface of the table-top and having a seat in which the upper end of the respective leg is received and clamped by means of a wedge, and a cover fixed to the base element. The facing surfaces of the base element and the cover have recesses which cooperate with each other to define one or more seats in which the corresponding parts of the horizontal cross members are received and clamped.
    Type: Grant
    Filed: September 9, 1988
    Date of Patent: July 18, 1989
    Assignee: B&B Italia S.p.A.
    Inventor: Giancarlo Piretti
  • Patent number: 4809619
    Abstract: A folding table (101) has a structure consisting of a plurality of mutually-articulated panels (104, 108, 109) which can be unfolded in an arc of a circle about an axis (105) corresponding to the central vertical axis of the table, from a folded configuration in which the structure is flattened in a meridian plane with respect to the above axis.
    Type: Grant
    Filed: July 31, 1987
    Date of Patent: March 7, 1989
    Assignee: Pro-Cord S.r.l.
    Inventor: Giancarlo Piretti
  • Patent number: 4796952
    Abstract: The chair is provided with a seat connected to a support structure of the chair by means of one or more hinged parallelograms consisting of pairs of tie-rods hinged to the seat and to the support structure. The structure of the chair backrest is integral with at least one of the tie-rods so as to allow the seat to be raised when the backrest is pushed backwards. Provision is also made for elastic means which are designed to counteract the backwards movement of the backrest.
    Type: Grant
    Filed: May 18, 1987
    Date of Patent: January 10, 1989
    Inventor: Giancarlo Piretti
  • Patent number: 4718354
    Abstract: An extensible table comprises a rigid panel defining the working plane of the table in a condition of minimum extension thereof and at least one structure for extending the panel including a frame connected to the panels so as to be slidable in a direction parallel to the plane of the panel and movable between an extreme retracted position within the panel and an extreme extended position in which the frame projects from one side of the panel.
    Type: Grant
    Filed: September 19, 1985
    Date of Patent: January 12, 1988
    Assignee: Castilia S.p.A.
    Inventor: Giancarlo Piretti
  • Patent number: 4618027
    Abstract: A ladder comprises a pair of main stiles, a series of centrally-hinged rungs with ends articulated to the two main stiles, whereby the ladder can adopt a folded inoperative configuration in which the main stiles are alongside each other and an extended operative configuration in which the main stiles are spaced from each other, and means for stopping the ladder in the extended operative configuration. The main stiles are articulated together at their upper ends and the ladder further includes a single auxiliary stile articulated at its upper end to the two upper ends of the main stiles about an axis substantially perpendicular to the articulation axis of the two main stiles. The auxiliary stile is movable between a position alongside the two main stiles, corresponding to the folded inoperative condition of the ladder, and a position spaced from the main stiles, corresponding to the extended operative condition of the ladder.
    Type: Grant
    Filed: October 22, 1985
    Date of Patent: October 21, 1986
    Assignee: Castilia S.p.A.
    Inventor: Giancarlo Piretti
  • Patent number: 4345733
    Abstract: A chair seat mounting device comprises a platelike support bracket that can be fastened to a chair base and a mounting plate that can be fastened to the underside of the chair seat. The plate automatically tilts forward on an axle on the bracket when the person sitting in the chair leans forward and his or her weight overcomes a spring mechanism that yieldably restrains the seat in the normal, upright position.
    Type: Grant
    Filed: April 28, 1980
    Date of Patent: August 24, 1982
    Assignee: Center for Design Research and Development N.V.
    Inventors: Emilio Ambasz, Giancarlo Piretti
  • Patent number: 4117784
    Abstract: A disassemblable table comprising at least a vertical column carrying the table-top and connected thereto in any detachable manner and provided at its lower end with a number of foot members extending radially outwardly from the base of said column, characterized by the fact that said foot members are connected to said column by means of a replaceable base mounting comprising a number of joint members augularly spaced away from each other and adapted to engage complementary joint members, each arranged at the inner end of foot member, and wherein at least one of said foot members may be substituted by a horizontal cross bar, having ends shaped as joint members and designed to connect one column to another in the case that the table has at least two columns, dismountable means connecting together said frame, to each column and relative mounting, extending axially thereacross.
    Type: Grant
    Filed: July 26, 1976
    Date of Patent: October 3, 1978
    Assignee: Societa Anonima Castelli s.a.s. Di C. Castelli & C.
    Inventor: Giancarlo Piretti
  • Patent number: 3944281
    Abstract: Modular parallelepiped members for composing disassemblable pieces of furniture as padded chairs, easy chairs, divans and the like comprising a first main modular member having a square open base and a height less than the base side length, a second main modular substantially identical to said first, said second modular member having an open rectangular base; and a third main member having a square open base the length of the sides thereof being equal to the height of the first main member, each main modular member comprising an inner carrying box-like rigid outwardly padded and lined structure, at least the lower portion of which has a horizontal rectangular cross section, and inwardly extending with vertical channels arranged having lower open ends spaced away from the floor plane, each channel being positioned so as to be distant from the closest vertical corner of the modular member of a value which is equal to 1/4 of the length of the side of the square base of the first modular member, said modular memb
    Type: Grant
    Filed: July 18, 1974
    Date of Patent: March 16, 1976
    Inventor: Giancarlo Piretti
  • Patent number: D273823
    Type: Grant
    Filed: February 14, 1983
    Date of Patent: May 15, 1984
    Assignee: Center for Design Research and Development NV
    Inventors: Emilio Ambasz, Giancarlo Piretti
  • Patent number: D274771
    Type: Grant
    Filed: April 3, 1981
    Date of Patent: July 24, 1984
    Assignee: Center for Design Research and Development NV
    Inventors: Emilio Ambasz, Giancarlo Piretti
  • Patent number: D281941
    Type: Grant
    Filed: April 15, 1983
    Date of Patent: December 31, 1985
    Assignee: Center for Design Research and Development N.V.
    Inventors: Emilio Ambasz, Giancarlo Piretti
  • Patent number: D283277
    Type: Grant
    Filed: April 15, 1983
    Date of Patent: April 8, 1986
    Assignee: Center for Design Research and Development N.V.
    Inventors: Emilio Ambasz, Giancarlo Piretti
  • Patent number: D284048
    Type: Grant
    Filed: April 15, 1983
    Date of Patent: June 3, 1986
    Assignee: Center for Design Research and Development N.V.
    Inventors: Emilio Ambasz, Giancarlo Piretti
  • Patent number: D305284
    Type: Grant
    Filed: December 2, 1986
    Date of Patent: January 2, 1990
    Inventor: Giancarlo Piretti
  • Patent number: D305285
    Type: Grant
    Filed: December 2, 1986
    Date of Patent: January 2, 1990
    Inventor: Giancarlo Piretti