Braking retardation apparatus for doors, windows or the like
AssigneeArturo Salice S.p.A.
InventorLuciano Salice
Life of this patent
Estimating the term…
Abstract
A braking retardation apparatus for doors, windows or the like has a piston pressable into a cylinder against the force of an expelling spring, with the element to be braked acting on the piston rod of said piston. To provide such a braking retardation apparatus with a reduced effort, a grease with high viscosity is applied to the wall of the cylinder.
Claims18
A braking retardation apparatus for doors (15) or windows, comprising
- a piston (2) pressable into a cylinder (1) against force of an expelling spring (12),
- with an element to be braked acting upon a piston rod (3) of said piston (2),
- wherein grease (13) of high viscosity is applied to a wall (8) of the cylinder (1), and
- said wall (8) of said cylinder (1) is provided with annular or spiral channels or grooves.
A braking retardation apparatus for doors (15) or windows, comprising
- a piston (2) pressable into a cylinder (1) against force of an expelling spring (12),
- with an element to be braked acting upon a piston rod (3) of said piston (2),
- wherein grease (13) of high viscosity is applied to a wall (8) of the cylinder (1), and
- said wall (8) of said cylinder (1) has an irregular surface.
A braking apparatus for doors (15) or windows, comprising
- a piston (2) pressable into a cylinder (1) against force of an expelling spring (12),
- with an element to be braked acting upon a piston rod (3) of said piston (2),
- wherein grease (13) of high viscosity is applied to a wall (8) of the cylinder (1), and
- an outer circumferential surface of said piston (2) is provided with annular or spiral channels or grooves.
A braking retardation apparatus for doors (15) or windows, comprising
- a piston (2) pressable into a cylinder (1) against force of an expelling spring (12),
- with an element to be braked acting upon a piston rod (3) of said piston (2),
- wherein grease (13) of high viscosity is applied to a wall (8) of the cylinder (1), and
- an outer circumferential surface of said piston (2) is provided with irregularities.
A braking retardation apparatus for doors (15) or windows, comprising
- a piston (2) pressable into a cylinder (1) against force of an expelling spring (12),
- with an element to be braked acting upon a piston rod (3) of said piston (2),
- wherein grease (13) of high viscosity is applied to a wall (8) of the cylinder (1), and,
- said grease (13) of high viscosity comprises at least one of a base oil of high viscosity, an adhesive polymer and synthetic hydrocarbons with high viscosity, such that said grease adheres well to the wall (8) of said cylinder (1) without being displaced, there being play between the wall (8) of the cylinder (1) and said piston (2) such that said grease (13) develops the effect of a sliding guide without being displaced to any real extent.
A braking retardation apparatus in accordance with claimed 8, wherein an axial front wall of said cylinder (1) is provided with a borehole (7) therethrough and arranged such that said piston rod (3) penetrates said borehole (7).
A braking retardation apparatus for doors (15) or windows, comprising
- a piston (2) pressable into a cylinder (1) against force of an expelling spring (12),
- with an element to be braked acting upon a piston rod (3) of said piston (2),
- wherein grease (13) of high viscosity is applied to a wall (8) of the cylinder (1),
- said cylinder (1) is closed at one axial end thereof by a cover (10), and
- said cover (10) is provided with a venting borehole.
A braking retardation apparatus for doors (15) or windows, comprising
- a piston (2) pressable into a cylinder (1) against force of an expelling spring (12),
- with an element to be braked acting upon a piston rod (3) of said piston (2),
- wherein grease (13) of high viscosity is applied to a wall (8) of the cylinder (1),
- an axial front wall of said cylinder (1) is provided with a borehole (7) therethrough and arranged such that said piston rod (3) penetrates said borehole (7), and
- additionally comprising
- a journal (4) positioned on an axial end of said piston (2),
- a journal (5) position ed on an opposite axial end of said piston rod (3),
- an axial rear end of said cylinder (10) being closed by a cover (10) in turn provided with a journal (11), such that said journals (4, 11) of said piston (2) and cover (11) are structured and arranged to retain said spring (12) which is a compression spring being clamped between said cover (10) and piston (2), and
- a head (6) positioned upon said journal (5) on said axial end of said piston rod (3) and arranged to extend beyond said bore- hole (7) in said front wall of said cylinder (1) and outside of an interior of said cylinder (1).
Dependencies are inferred from the claim text.