Patents by Inventor Curt Falk
Curt Falk 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: 11965564Abstract: A clutch for a rotary shaft includes an annular pressure chamber with a sleeve surface engaging a surface to drivingly connect the shaft to the clutch, and further includes a trigger device and a channel system activatable by the trigger device upon a relative angular movement between the shaft and the chamber to release the shaft from the housing. The trigger device has a cam wheel having a constant first radius across a first angular interval and a second, smaller, radius across a second angular interval. The cam wheel is supported on an envelope surface within the first angular interval and rotating in relation to the envelope surface when the shaft rotates in relation to the housing. When a contact point reaches the second angular interval, the cam wheel is displaced to activate said channel system.Type: GrantFiled: August 30, 2023Date of Patent: April 23, 2024Assignee: C FALK REMOTE CONTROL ABInventor: Curt Falk
-
Publication number: 20230407925Abstract: A clutch for a rotary shaft includes an annular pressure chamber with a sleeve surface engaging a surface to drivingly connect the shaft to the clutch, and further includes a trigger device and a channel system activatable by the trigger device upon a relative angular movement between the shaft and the chamber to release the shaft from the housing. The trigger device has a cam wheel having a constant first radius across a first angular interval and a second, smaller, radius across a second angular interval. The cam wheel is supported on an envelope surface within the first angular interval and rotating in relation to the envelope surface when the shaft rotates in relation to the housing. When a contact point reaches the second angular interval, the cam wheel is displaced to activate said channel system.Type: ApplicationFiled: August 30, 2023Publication date: December 21, 2023Inventor: Curt FALK
-
Patent number: 11773924Abstract: A clutch for a rotary shaft includes an annular pressure chamber with a sleeve surface engaging a surface to drivingly connect the shaft to the clutch, and further includes a trigger device and a channel system activatable by the trigger device upon a relative angular movement between the shaft and the chamber to release the shaft from the housing. The trigger device has a cam wheel having a constant first radius across a first angular interval and a second, smaller, radius across a second angular interval. The cam wheel is supported on an envelope surface within the first angular interval and rotating in relation to the envelope surface when the shaft rotates in relation to the housing. When a contact point reaches the second angular interval, the cam wheel is displaced to activate said channel system.Type: GrantFiled: July 26, 2019Date of Patent: October 3, 2023Assignee: C FALK REMOTE CONTROL ABInventor: Curt Falk
-
Patent number: 11338466Abstract: The present invention refers to a motor saw arrangement comprising a support plate attached to the motor saw chassis or motor saw motor, a detachable clamping plate and a detachable guide bar arranged between the support plate and the clamping plate. The support plate is provided with two first recesses and at least one threaded hole, while the clamping plate is provided with two protrusions adapted to fit inside the respective two first recesses when the clamping plates is attached to the support plate and the protrusions each have a height that exceeds a corresponding height of the guide bar. The guide bar is provided with two keyhole-shaped slots and with a longitudinal slit between the two keyhole-shaped slots and the support plate is further provided with an alignment means. The invention further relates to a method to remove and/or replace a saw chain from a guide bar and to a guide bar intended and adapted for the motor saw arrangement described herein.Type: GrantFiled: June 4, 2018Date of Patent: May 24, 2022Assignee: JPS TEKNIK ABInventors: Curt Falk, Peter Sörell, Torbjörn Gustafsson
-
Publication number: 20210293288Abstract: Clutch (100) for a rotary shaft (10), said clutch comprising an annular pressure chamber (110) with a sleeve surface (131) engaging a surface (11) to drivingly connected the shaft to the clutch, further comprising a trigger device (140) and a channel system (150) activatable by said trigger device upon a relative angular movement between the shaft and the chamber to release the shaft from the housing. The trigger device comprises a cam wheel (141) having a constant first radius (R1) across a first angular interval (All) and a second, smaller, radius (R2) across a second angular interval (AI2), the cam wheel being supported on an envelope surface (12) within the first angular interval and rotating in relation to the envelope surface when the shaft rotates in relation to the housing. When a contact point reaches the second angular interval, the cam wheel is displaced to activate said channel system.Type: ApplicationFiled: July 26, 2019Publication date: September 23, 2021Inventor: Curt FALK
-
Publication number: 20210129371Abstract: The present invention refers to a motor saw arrangement comprising a support plate attached to the motor saw chassis or motor saw motor, a detachable clamping plate and a detachable guide bar arranged between the support plate and the clamping plate. The sup-port plate is provided with two first recesses and at least one threaded hole, while the clamping plate is provided with two protrusions adapted to fit inside the respective two first recesses when the clamping plates is attached to the support plate and the protrusions each have a height that exceeds a corresponding height of the guide bar. The guide bar is pro-vided with two keyhole-shaped slots and with a longitudinal slit between the two keyhole-shaped slots and the support plate is further provided with an alignment means. The invention further relates to a method to remove and/or replace a saw chain from a guide bar and to a guide bar intended and adapted for the motor saw arrangement described herein.Type: ApplicationFiled: June 4, 2018Publication date: May 6, 2021Applicant: JPS TEKNIK ABInventors: Curt FALK, Peter SÖRELL, Torbjörn GUSTAFSSON
-
Patent number: 8276730Abstract: A clutch of hydraulic-pressure type comprising a linearly controlled piston (300) that is movable in a channel in the clutch and that carries a pivotally mounted support leg (208) that is spring biased into axial alignment with the piston, the side of which facing away from the support leg is loaded by the hydraulic pressure. The clutch is annular and co-operates with a shaft shank (1), and the free end of the support leg rests against a support surface carried by the shaft shank (1) upon rotation between the shaft shank (1) and the clutch (4), the support leg is turned away, whereby the piston (300) is displaced and opens a valve through which the hydraulic pressure is evacuated.Type: GrantFiled: December 21, 2007Date of Patent: October 2, 2012Assignee: Hudiksvalls Teknik Centrum ABInventor: Curt Falk
-
Patent number: 8257182Abstract: A torque transmitting cardan shaft including within the shaft an adapted intermediate member or shaft, which has a first end section, that is intended for a rotationally rigid co-action with a first universal joint yoke and a second end section, opposite the first end section, intended for a rotationally rigid co-action with a second universal joint yoke. The intermediate member or shaft and its end section is configured as and comprises two parts or subsections, which are mutually joined via a safety coupling arrangement, by means of which a free coupling of the subsections from one other can be ensured immediately after the torque, between the subsections, exceeds a predetermined value, determined by the construction of the safety coupling arrangement. An end section and its universal joint yoke includes an axially orientated cylindrical groove or recess, which has a center axis that is co-ordinated with or aligned with a rotational axis of the first end section and its co-ordinated universal joint yoke.Type: GrantFiled: October 2, 2008Date of Patent: September 4, 2012Assignee: Voith Turbo Safeset ABInventor: Curt Falk
-
Publication number: 20100273562Abstract: The present invention relates to a torque transmitting cardan shaft, and, in principle, includes within the shaft an adapted intermediate member or shaft, which has a first end section, that is intended for a rotationally rigid co-action with a first universal joint yoke and a second end section, opposite the first end section, intended for a rotationally rigid co-action with a second universal joint yoke. The intermediate member or shaft and its end section is configured as and includes two parts or sub-sections, which are mutually joined via a safety coupling arrangement, by which a free coupling of the subsections from one other can be ensured immediately after the torque, between said subsections, exceeds a predetermined value, determined by the construction of the safety coupling arrangement.Type: ApplicationFiled: October 2, 2008Publication date: October 28, 2010Applicant: VOITH TURBO SAFESETInventor: Curt Falk
-
Publication number: 20100089716Abstract: A clutch of hydraulic-pressure type comprising a linearly controlled piston (300) that is movable in a channel in the clutch and that carries a pivotally mounted support leg (208) that is spring biased into axial alignment with the piston, the side of which facing away from the support leg is loaded by the hydraulic pressure. The clutch is annular and co-operates with a shaft shank (1), and the free end of the support leg rests against a support surface carried by the shaft shank (1) upon rotation between the shaft shank (1) and the clutch (4), the support leg is turned away, whereby the piston (300) is displaced and opens a valve through which the hydraulic pressure is evacuated.Type: ApplicationFiled: December 21, 2007Publication date: April 15, 2010Applicant: HUDIKSVALLS TEKNIK CENTRUM ABInventor: Curt Falk
-
Publication number: 20080200264Abstract: The present invention relates to a coupling arrangement adapted for inclusion in a universal-joint-related arrangement (A), comprising a first axle (1) or the like having on one end a U-shaped forked unit (10), and further comprising an “X”-shaped torque transmission member (3) and a second axle (2) or the like having on one end a U-shaped forked unit (20), wherein the forked unit (10) assigned to the first axle and the cross-member-related and mutually opposing legs (11, 12) of said forked unit (10) are able to co-act with two, of a total of four, mutually opposite arm parts (3a, 3c) of said cross-member (3) and wherein the forked unit (20) of the second axle (2) and its cross-member-related and mutually opposite legs (21, 22) are able to co-act over radial bearing means with two, of a total of four, mutually opposite arm parts (3b, 3d) of said cross-member (3).Type: ApplicationFiled: January 17, 2006Publication date: August 21, 2008Inventor: Curt Falk
-
Publication number: 20070068510Abstract: The present invention relates to a safety coupling arrangement (10) comprising a first coupling part (11, that can be adapted for fixed co-action with a shaft, axle or the like that functions to transfer torque and rotary movement to said safety coupling, and a second coupling part (12) which is adapted for fixed co-action with a shaft, axle or the like to transfer torque and rotational movement from the safety coupling, and further comprising a safety unit (13). The safety unit is adapted to take one of two settings, a first setting, in which torque and rotary movement can be transferred between said two coupling parts (11, 12) and a second setting, in which no torque and rotational movement can be transferred between said two coupling parts.Type: ApplicationFiled: December 20, 2004Publication date: March 29, 2007Inventor: Curt Falk
-
Patent number: 6908393Abstract: A torque-limiting coupling device including a cylindrical sleeve and a cylindrical shaft in radially tensioned frictional engagement for transferring torque up to a torque limit that corresponds to the radial tension and at which the sleeve begins to rotate relative to the shaft. The device also includes at least one pump mechanism which is adapted to be driven to pump liquid to the interface between co-acting surfaces of the sleeve and shaft upon relative rotation between the sleeve and the shaft. The shaft includes a surface layer that defines one of the co-acting surfaces and that is made of a material, e.g. tombak, whose plasticizing limit is lower than the plasticizing limit of the material in the co-acting surface of the sleeve. The surface layer may include cavities which enable the surface layer to take a smaller radial thickness after plasticization thereof.Type: GrantFiled: October 27, 2000Date of Patent: June 21, 2005Assignee: Curt Falk ABInventor: Curt Falk
-
Patent number: 6761256Abstract: A clutch arrangement for rapid disengagement of two elements in a transmission system when a chosen torque is exceeded. The first element is a conical shaft end that carries a corresponding sleeve which, in turn, carries externally at its ends two mutually separated ball bearings with a force transmission ring disposed therebetween. The second element, an annular force transmission body, surrounds and is carried by the ball bearings and includes a pressurisable hydraulic chamber which, when pressurised, causes a reduction in the inner surface diameter of the body so that the body is brought into force transmitting engagement with the outer surface of the ring. The sleeve carries a dogging element which is adapted to act on an element carried by the body for depressurising the hydraulic chamber upon relative rotation between the body and the sleeve such that, when the chosen torque is exceeded resulting in the relative rotation, the chamber is depressurised, and the ring and the body pass free from each other.Type: GrantFiled: September 27, 2002Date of Patent: July 13, 2004Assignee: Voith Safeset ABInventor: Curt Falk
-
Publication number: 20030047404Abstract: A clutch arrangement for rapid disengagement of two elements in a transmission system when a chosen torque is exceeded. The one element is a conical shaft-end which carries a corresponding sleeve (1). The sleeve carries externally at its ends two mutually separated ball bearings (5) and a force transmission ring (20) disposed therebetween. An annular force transmission body (7) surrounds and is carried by the ball bearings and includes a pressurisable hydraulic chamber which when pressurised through the medium of a valve on said body causes a reduction in the diameter of the inner surface of the body (7) so that said body will be brought into force transmitting engagement with the outer surface of the ring. The sleeve (1) carries a dogging element (14) which is adapted to act on an element (10) carried by the body (7) for depressurising the hydraulic chamber (8) upon relative rotation between the body (7) and the sleeve (1).Type: ApplicationFiled: September 27, 2002Publication date: March 13, 2003Inventor: Curt Falk
-
Patent number: 6126549Abstract: A coupling arrangement for coupling a driving unit (1) to a driven unit (2) includes a combination of a shear coupling (7) which acts between the units and which fails immediately an overload occurs, and a brake coupling (13) which is adapted to become active between the units (1, 2) when the shear coupling (7) fails.Type: GrantFiled: June 3, 1998Date of Patent: October 3, 2000Assignee: Voith Safeset ABInventors: Bo Appell, Curt Falk
-
Patent number: 5069320Abstract: A torque-limiting clutch arrangement which comprises a cylindrical part (3) forming part of one clutch element and having shrink-fitted thereon a cylindrical sleeve (5) which forms part of the other clutch element. The clutch arrangement also includes a pump which when one clutch element (3) rotates relative to the other clutch element (5), when the torque on the clutch exceeds a given value, functions to pump oil into the domain of engagement between the cylindrical part (3) and the sleeve (5), so as to form a hydrostatic layer therebetween, the hydrostatic layer essentially negating the friction between the engagement surfaces while the relative movement continues.Type: GrantFiled: December 21, 1990Date of Patent: December 3, 1991Assignee: Metalform Safeset ABInventor: Curt Falk
-
Patent number: 5051018Abstract: A coupling for coupling together two mutually coaxial, rotatable parts, comprising a substantially cylindrical coupling member which is intended to be mounted between the parts to be coupled together and which is expandable both radially outwards and radially inwards so as to exert on the parts a coupling pressure through the intermediary of the coupling member. The coupling member incorporates a pressure chamber which is intended to be supplied with pressure fluid for expansion of the coupling member and which is provided with a pressure relief device which is triggered upon relative rotation of the aforementioned parts. The coupling member is configured to exert a greater coupling force on a first of the aforementioned parts than on the other of these parts, and the pressure relief device is intended to be activated upon relative rotation between the first part and the coupling member, but to permit rotation between the other of the parts and the coupling member.Type: GrantFiled: September 18, 1990Date of Patent: September 24, 1991Assignee: Metalform Safeset ABInventors: Bo Appell, Curt Falk