Clamping collar
AssigneeEtablissements Caillau
InventorsBenoit Sidaine, Cyriaque Fouqueray, Patrick Goulet
Life of this patent
Estimating the term…
Abstract
A clamping collar having a hook (22) suitable for being clipped onto a lug (12) in the clamped state. The collar has a tongue (14) secured to the end that carries the hook (22). The lug (12) has a free edge (12A) which, when the collar is in the unclamped state, faces towards the hook (22), and the tongue carries at least one retaining member (26A, 26B) which, when the collar is in the unclamped state, lies in a cavity (28) provided under the lug (12) and co-operates with the free edge thereof. The tongue also has a guide embossed region (40) in alignment with the free edge of the lug to guide said lug during hooking and/or to form an abutment for the hook.
Claims33
A clamping collar comprising:
- a metal strip rolled up on itself into a generally annular form and having first and second ends respectively provided with a hook and with a lug each of which project radially outwards from the rolled up strip,
- said collar being constructed and arranged to assume one of a clamped position in which the hook is engaged with the lug such that the hook is radially outward of the lug, and an unclamped position in which the hook and the lug are disengaged from one another,
- the first end of the strip having a tongue portion secured thereto which, in the unclamped position extends along a circumferential periphery of the strip in the unclamped position between the hook and the lug,
- the lug having a free edge which opposes the hook in the unclamped position,
- the tongue including at least one retaining member which lies disposed in a cavity defined on a radially inward side of the lug in the unclamped position such that the at least one retaining member cooperates with the free edge of said lug to define pre-hooking means for retaining the tongue relative to the second end of the strip in the unclamped position in order to prevent opening of said collar.
A clamping collar comprising:
- a metal strip rolled up on itself and having first and second ends provided with a hook and with a lug, respectively, each of which projects radially outwards from the rolled up strip,
- said collar being constructed and arranged to assume one of a clamped position in which the hook is engaged with the lug, end an unclamped position in which the hook and the lug are disengaged,
- the first end of the strip having a tongue portion secured thereto and which extends substantially along a circumferential periphery of the strip between the hook and the lug in the unclamped position,
- wherein the lug has a free edge which faces towards the hook in the unclamped position the free edge being provided with a notch, the tongue carrying a guide piece which projects from its outside face and which is in alignment with said notch is along the direction in which the collar is clamped, means for accommodating said guide piece in the clamped position being provided under the engaged lug and hook,
- wherein the tongue includes at least one retaining member which, when the collar is in the unclamped state, lies in a cavity formed on a radially inward side of the lug and co-operates with the free edge of the lug, and
- the hook also having a radially inward facing cavity in which the lug is disposed in the clamping position.
A clamping collar comprising means forming a metal strip rolled up on itself and having first and second ends respectively equipped with a hook and with a lug which project outwards from the collar, said collar being suitable for taking up a clamped state in which the hook is clipped onto the lug, and an unclamped state in which the hook and the lug are spaced apart, the collar first end further comprising a tongue which is secured to the first end of the collar and which, in said unclamped state, extends substantially around the periphery of the collar, between the hook end the lug,
- the lug having a free edge which, when the collar is in the unclamped state, faces towards the hook, and the tongue carrying at least one retaining member which is formed by a tab cut out from said strip and upstanding relative to said strip so as to have a free end facing towards said hook and which, when the collar is in the unclamped state, lies in a cavity provided under the lug and co-operates with the free edge of said lug, so that when the collar is in the unclamped state, said tongue is retained relative to the second end of said collar in order to close said collar, and the hook further having a radially inward facing cavity for receiving the lug therein when the collar is in the clamped state.
A clamping collar comprising:
- means forming a metal strip rolled up on itself and having first and second ends respectively equipped with a hook and with a lug which project outwards from the collar, said collar being suitable for taking up a clamped state in which the hook is clipped onto the lug, and an unclamped state in which the hook and the lug are spaced apart, the collar first end further comprising a tongue which is secured to the first end of the collar and which, in said unclamped state, extends substantially around the periphery of the collar, between the hook and the lug.
- the lug having a free edge which, when the collar is in the unclamped state, faces towards the hook, and the tongue carrying at least one retaining member which, when the collar is in the unclamped state, lies in a cavity provided under the lug and co-operates with the free edge of said lug, so that, when the collar is in the unclamped state, said tongue is retained relative to the second end of said collar in order to close said collar, wherein the retaining member is deflectable substantially into the plane of the tongue under the effect of the pressure exerted on said member by the strip portion that is situated behind the lug while the collar is being clamped, and
- the hook further having a radially inwardly facing cavity, for receiving the lug therein.
A clamping collar comprising means forming a metal strip rolled up on itself and having first and second ends respectively equipped with a hook and with a lug which project outwards from the collar, said collar being suitable for taking up a clamped state in which the hook is clipped onto the lug, and an unclamped state in which the hook and the lug are spaced apart, the collar first end further comprising a tongue which is secured to the first end of the collar and which, in said unclamped state, extends substantially around the periphery of the collar, between the hook and the lug,
- the lug having a free edge which faces towards the hook when the collar is in the unclamped state, and which is provided with a notch, the tongue carrying a guide piece in relief which projects from its outside face and which is in alignment with said notch in the direction in which the collar is clamped, and the collar having means for accommodating said guide piece in relief when the collar is in the clamped state, under the assembly formed by the lug and by the hook clipped onto said tug,
- wherein a cavity is provided under the lug,
- wherein the lug is in the form of an undulation whose concave face faces towards the inside of the collar to form said cavity,
- the hook further having a cavity, wherein the hook cavity and the lug cavity receive the lug and retaining member, respectively, and
- wherein the collar has wedging surfaces constructed and arranged to cooperate with the guide piece in relief when the collar is in the clamped state so as to prevent the lug from moving relative to the tongue transversely to a direction in which the collar is clamped.
A clamping collar comprising means forming a metal strip rolled up on itself and having first and second ends respectively equipped with a hook and with a lug which project outwards from the collar, said collar being suitable for taking up a clamped state in which the hook is clipped onto the lug, and an unclamped state in which the hook and the lug are spaced apart, the collar further comprising a tongue which is secured to the first end of the collar and which, in said unclamped state, extends substantially around the periphery of the collar, between the hook and the lug,
- the latter having a free edge which faces towards the hook when the collar is in the unclamped state, and which is provided with a notch, the tongue carrying a guide piece in relief which projects from its outside face and which is in alignment with said notch in the direction in which the collar is clamped, and the collar having means for accommodating said guide piece in relief when the collar is in the clamped state, under the assembly formed by the lug and by the hook clipped onto said lug.
- wherein a cavity is provided under the lug, and
- wherein the lug has a back face for retaining the hook when the collar is in the clamped state and wherein, on said back lace, the lug has a wedging bulge which forms a setback under said lug, in which setback the guide piece in relief is engaged at least in part when the collar is in the clamped state.
A clamping collar comprising means forming a metal strip rolled up on itself and having first and second ends respectively equipped with a hook and with a lug which project outwards from the collar, said collar being suitable for taking up a clamped state in which the hook is clipped onto the lug, and an unclamped state in which the hook and the lug are spaced apart, the collar further comprising a tongue which is secured to the first end of the collar and which, in said unclamped state, extends substantially around the periphery of the collar, between the hook and the lug,
- the latter having a tree edge which faces towards the hook when the collar is in the unclamped state, and which is provided with a notch, the tongue carrying a guide piece in relief which projects from its outside face and which is in alignment with said notch in the direction in which the collar is clamped, and the collar having means for accommodating said guide piece in relief when the collar is in the clamped state, under the assembly formed by the lug and by the hook clipped onto said lug, wherein the guide piece in relief is suitable for co-operating in abutment with a region of the hook that is opposite to the free edge of said hook so as to limit a movement of the hook relative to the tongue during clamping.
Dependencies are inferred from the claim text.