Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 7419146 | Composite leaf spring geometry with an interlocking interface A suspension system includes a composite leaf spring having a mounting segment of a tapered width combined with an expanding depth. Any position along the longitudinal length of the mounting segment provides a singular cross-sectional shape taken parallel to an axle... | 09/02/2008 |
| 7284308 | Method for manufacturing a leaf spring Leaf springs have improved durability in spite of using inexpensive spring steel such as SUP9 and SUP11 as materials. While a spring main body, made of the spring steel in which Brinell hardness is under 555 HBW and not less than 388 HBW (corresponding to a diameter... | 10/23/2007 |
| 6920965 | Spot-type disc brake with a spring assembly for a brake pad The present invention relates to a spot-type disc brake with a brake housing straddling a brake disc, with at least one brake pad that is arranged in the brake housing so as to be slidable in the actuating direction and cooperates tribologically with the brake disc ... | 07/26/2005 |
| 6478321 | Rubber shear spring assembly for tandem axle trailer A rubber shear spring assembly for mounting between inner ends of adjacent leaf springs of a tandem axle including a hanger for mounting on a vehicle frame, hanger sides on the hanger, a rubber shear spring assembly between the hanger sides, the rubber sh... | 11/12/2002 |
| 6406008 | Axle clamp attachment system The invention relates to suspensions for trucks and trailers and to systems for clamping an axle housing to a combination suspension support member and spring in such a way that the axle housing is clamped and compressed uniformly on all four sides whereb... | 06/18/2002 |
| 5531284 | Powered wheelchair with a detachable power drive assembly A wheelchair (20) including a wheelchair frame (22) and a seat assembly (24) carried by the wheelchair frame (22). A detachable power drive assembly (32) having power driven wheels (40, 40') is releasably coupled to the wheelchair frame (22) and is mounte... | 07/02/1996 |
| 5505479 | Anti-roll system for vehicle An anti-roll system for a vehicle includes a pair of front lower control arms positioned in transverse alignment between opposing front or rear wheels of the vehicle. Each control arm is pivotally connected to a subframe of the vehicle and further connect... | 04/09/1996 |
| 5427404 | Stiff beam suspension system A suspension system in which a relatively lightweight stiff beam connects the axle to the frame via a connection at one end with a resilient link that allows vertical motion of the end of the stiff beam and transverse motion of the stiff beam to reduce th... | 06/27/1995 |
| 5351774 | Powered wheelchair with a detachable power drive assembly A wheelchair (20) including a wheelchair frame (22) and a seat assembly (24) carried by the wheelchair frame (22). A detachable power drive assembly (32) having power driven wheels (40, 40') is releasably coupled to the wheelchair frame (22) and is mounte... | 10/04/1994 |
| 5251886 | Semi-elliptical spring suspension with automatic spring rate varying capacity A semi-elliptical spring suspension system is provided in conjunction with a trailing arm and the suspension system may be readily mounted from the longitudinal side members of a vehicle frame. The suspension system semi-elliptical spring comprises a comp... | 10/12/1993 |
| 5244190 | Vehicle wheel suspension method The invention has for its object a suspension with dynamically variable flexibility or stiffness. The suspension process uses one or several elastic elements mounted opposite each other, so as to impress on the vehicle suspension a variation of stiffness ... | 09/14/1993 |
| 5103638 | Mounting arrangement A mounting arrangement for a composite material flameholder in teh reheat system of a gas turbine engine provides for a flameholder to be suspended from a flameholder bracket in the jet pipe by a means of pivotal mounting and to be restrained from movemen... | 04/14/1992 |
| 4972920 | Wheel suspension of a motorcycle A wheel suspension of a motorcycle comprises a resilient element (1) C-shaped in the flexure plane and pivotably connected by ends thereof to a swinging arm (5) carrying the wheel, and to the frame (3) of the motorcycle. The resilient element (1) of the s... | 11/27/1990 |
| 4927124 | Spring assemblies Assembly comprising a spring in the form of a zig-zag strip of fibre reinforced plastics material with limbs (10-16) connected by reflex portions (17,22), wherein end limbs (10,16) of the spring are mounted at an attitude they would adopt when loaded if t... | 05/22/1990 |
| 4763885 | Planar spring A spring is constructed as a resilient U-shaped piece comprising a middle portion and leg portions disposed in the same plane, the leg portions including a bearing for taking an external load. The bearings are disposed on the leg portions in such a manner... | 08/16/1988 |
| 4725074 | Vehicle suspension A suspension for a pair of wheels of a motor vehicle, comprising a pair of pivoted arms (14) supporting the wheels (10) relative to the vehicle, and a leaf spring (16) extending transversely of the vehicle and connected to the arms. The leaf spring is sup... | 02/16/1988 |
| 4533157 | Rear offset axle suspension system for vehicle A suspension system for the rear wheels of a motor vehicle includes a pair of leaf springs having their fore and aft ends pivotally mounted to the vehicle frame or body. The leaf springs flexibly support a tubular rear axle member forwardly and downwardly... | 08/06/1985 |
