Patents by Inventor Helmut Holl
Helmut Holl 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).
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Patent number: 9010502Abstract: A retaining formation defined on a brake lever of an air disc brake includes a push fit/snap fit connection for releasably securing a push rod to a brake lever. The retaining formation can include a pinned connection and a ball and socket joint, and a main axis of the pinned connection is coincident with a center of rotation of the ball and socket joint. The retaining formation can include a concave formation on one of the push rod and the brake lever and a corresponding convex formation on the other of the push rod and the brake lever. The concave formation at least partially surrounds the convex formation to prevent axial separation of the push rod and the brake lever. A method of assembling a brake subassembly includes the steps of assembling a push rod and a brake lever including a retaining formation such that at least a portion of the retaining formation deforms during assembly and resiles when the push rod is assembled to the brake lever to provide a snap fit connection therebetween.Type: GrantFiled: December 23, 2008Date of Patent: April 21, 2015Assignee: Meritor Heavy Vehicle Braking Systems (UK) LimitedInventors: Paul Roberts, Keith Niehorster, Martin P. Taylor, V. S. Arul Anand, Nagaraja Gargeshwari S, Pradeep D. Mirji, Herr Franz Helmut Holl
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Patent number: 8316916Abstract: A method for producing a pipe, a carrier element being coated by means of a thermal spraying method, the material of the pipe formed later being selected as the coating material, and the coating forming the pipe being detached from the carrier element, the spraying angle, at which the coating material is sprayed onto the carrier element, being selected such that a low level of adhesion of the coating on the carrier element is achieved.Type: GrantFiled: October 26, 2011Date of Patent: November 27, 2012Assignee: Linde AktiengesellschaftInventors: Peter Heinrich, Peter Richter, Helmut Höll, Erik Bahr
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Publication number: 20120273152Abstract: A method for producing a pipe, a carrier element being coated by means of a thermal spraying method, the material of the pipe formed later being selected as the coating material, and the coating forming the pipe being detached from the carrier element, the spraying angle, at which the coating material is sprayed onto the carrier element, being selected such that a low level of adhesion of the coating on the carrier element is achieved.Type: ApplicationFiled: October 26, 2011Publication date: November 1, 2012Inventors: Peter Heinrich, Peter Richter, Helmut Höll, Erik Bahr
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Publication number: 20090175677Abstract: A retaining formation defined on a brake lever of an air disc brake includes a push fit/snap fit connection for releasably securing a push rod to a brake lever. The retaining formation can include a pinned connection and a ball and socket joint, and a main axis of the pinned connection is coincident with a center of rotation of the ball and socket joint. The retaining formation can include a concave formation on one of the push rod and the brake lever and a corresponding convex formation on the other of the push rod and the brake lever. The concave formation at least partially surrounds the convex formation to prevent axial separation of the push rod and the brake lever. A method of assembling a brake subassembly includes the steps of assembling a push rod and a brake lever including a retaining formation such that at least a portion of the retaining formation deforms during assembly and resiles when the push rod is assembled to the brake lever to provide a snap fit connection therebetween.Type: ApplicationFiled: December 23, 2008Publication date: July 9, 2009Inventors: Paul Roberts, Keith Niehorster, Martin P. Taylor, V.S. Arul Anand, Nagaraja Gargeshwari S, Pradeep D. Mirji, Herr Franz Helmut Holl
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Patent number: 7380644Abstract: A brake system includes a brake disc having a first disc face and a second disc face on a first side and a second side, respectively, of the brake disc. The brake disc is mounted rotatably fast with but longitudinally slidable on a rotatable shaft. The brake disc is clampable between a first friction surface of a fixed brake pad positioned on the first side of the brake disc and a second friction surface of a moveable brake pad positioned on the second side of the brake disc. The system further includes a disc positioner operable to define a running clearance between the first disc face and the first friction surface. The disc positioner is adjustable to maintain the running clearance as the fixed brake pad wears. A biasing member located on the second side of the brake disc maintains contact between the disc positioner and first disc face of the brake disc.Type: GrantFiled: December 17, 2004Date of Patent: June 3, 2008Assignee: Meritor Heavy Vehicle Braking Systems (UK) Ltd.Inventors: Andrew John Ward, Franz Helmut Holl, Martin Pors Taylor, Denis John McCann, Stefano Cattaneo, Mark Anthony Norman, Jonathon Leslie Christopher Jackson, Carl Edward Heinlein
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Patent number: 7070026Abstract: A brake actuating apparatus includes a force transmission element operable to transmit a brake actuating force and an abutment member moveable to abut the force transmission element. A piezo-electric device operable on expansion applies a force between the abutment member and the force transmission element to move the force transmission element in a direction of brake actuation. A support member moveable independently of the abutment member supports the force transmission element in the new position following expansion of the piezo-electric device.Type: GrantFiled: March 27, 2001Date of Patent: July 4, 2006Assignee: ArvinMeritor Heavy Vehicle Braking Systems (UK) Ltd.Inventors: Roberto Conti, Denis John McCann, Paul Anthony Thomas, Franz Helmut Holl, Wilfried Giering, Markus Necknig, Dietmar Knoop, Andrew John Ward
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Publication number: 20050045434Abstract: A vehicle brake assembly includes a first brake housing portion having an assembly opening formed through a lower face. The lower face is substantially perpendicular to a front face which faces a brake rotor. Bearing blocks, needle bearings, and a lever assembly are passed through the assembly opening. A brake actuation mechanism, closing plate, and a second housing portion are assembled to the first housing. The addition of the assembly opening perpendicular to the front face provides greater flexibility with regard to accommodating specific assembly line sequence requirements.Type: ApplicationFiled: April 2, 2003Publication date: March 3, 2005Inventors: Franz-Helmut Holl, Juergen Dreher
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Patent number: 5520267Abstract: A first threaded member is supported for rotation about a screw axis (C; C'; C") parallel to the axis (A) of a brake disc in a casing which is disposed axially next to the brake disc when in built-in position. A second threaded member is fixed against rotation and connected to the first threaded member by a readjustment thread pair so that the two threaded members together form a longitudinally adjustable tappet for exerting an actuating force on a brake pad. A rotary member is rotatable about an axis of rotation (B) of its own which extends at least approximately parallel to the brake disc, for axially displacing the tappet by means of an actuator member. A gear connection is provided between the rotary member and the first threaded member, comprising an angle drive and a coupling arrangement to transmit a limited torque for readjustment of the brake pad mentioned.Type: GrantFiled: September 30, 1994Date of Patent: May 28, 1996Assignee: Lucas Industries public limited companyInventors: Wilfried Giering, Franz-Helmut Holl
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Patent number: 5117895Abstract: With a continuous casting mold, the mold side walls each are formed by a supporting wall and an internal plate fastened thereto and getting into contact with the metal melt. On the side of the internal plate facing the supporting wall parallely arranged coolant channels are provided, which are designed as slits open towards the supporting wall and whose width is smaller and whose depth is larger, than the width of the ribs located between the slits. In order to render the cooling performance particularly effective, the width of the cooling ribs is smaller than, or equal to, 13 mm and the flow speed of the coolant is adjusted such that the heat transmission coefficient alpha between the internal plate and the coolant is between 20 and 70 kW/m.sup.2 K, preferably between 25 and 50 KW/m.sup.2 K, such that the heat flow density for the internal plate is larger than the heat flow density for a smooth internal plate having no ribs.Type: GrantFiled: March 28, 1990Date of Patent: June 2, 1992Assignee: Voest-Alpine Industrieanlagenbau Gesellschaft m.b.H.Inventors: Reinhard Hargassner, Rudolf Scheidl, Helmut Holl
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Patent number: 4782924Abstract: At least one brake shoe (14) comprising a lining support member (16) and two lining sections (20) fastened one behind the other in circumferential direction to the support member (16) is arranged in a brake drum (10) which has a circular cylindrical internal braking surface (12). Each lining section (20) has an at least approximately circular cylindrical friction surface (22) the radius of curvature (R22) of which is smaller than the radius of curvature (R12) of the braking surface (12) and the center of curvature (M22) of which is located such that only a center portion of the friction surface (22) engages the braking surface (12) upon actuation of the brake.Type: GrantFiled: May 26, 1987Date of Patent: November 8, 1988Assignee: Lucas Industries public limited companyInventors: Wilfried T. Giering, Sigmar H. Micke, Franz-Helmut Holl, Jorg Thielecke