MALCOLM HOWARD RAY
Engineers in Canton, ME
License number
Pennsylvania PE085829
Category
Engineers
Type
Professional Engineer
Address
Address
2
Canton, ME 04221
Pennsylvania
Pennsylvania
Personal information
See more information about MALCOLM HOWARD RAY at radaris.comName
Address
Phone
31 Doughty Rd, North Yarmouth, ME 04097
186 Staples Hill Rd, Canton, ME 04221
13 Egypt Rd, Damariscotta, ME 04543
13 Egypt Rd, Damariscotta, ME 04543
1602 State Ave, Coraopolis, PA 15108
Professional information
Reusable High Molecular Weight/High Density Polyethylene Guardrail
US Patent:
6637971, Oct 28, 2003
Filed:
Nov 1, 2001
Appl. No.:
10/000620
Inventors:
Malcolm H. Ray - Canton ME
Assignee:
Worcester Polytechnic Institute - Worcester MA
International Classification:
E01F 1500
US Classification:
404 6, 404 10, 256 131
Abstract:
The present invention provides a reusable high molecular weight, high density polyethylene guardrail designed for economical construction and rapid replacement of the elements comprising the guardrail system. This guardrail system is energy absorbing and comprises a plurality of stanchions, a plurality of connector sleeves, a horizontal barrier engaging the connector sleeves, and a plurality of location devices containing a contact surface used to support the connector sleeves. In the guardrail system, the stanchions engage the ground while the connector sleeves encompass a portion of the stanchion protruding from the ground. The horizontal barrier traverses consecutive connector sleeves by passing through from the exterior to the interior and back to the exterior of a connector sleeve. The location devices support the connector sleeves, which in turn locate the horizontal barrier, on stanchions at the proper height to engage vehicles alighting from the driving surface, yet enable, the sleeve to move up along the stanchion upon impact of a vehicle with the barrier.
Variable Force Energy Dissipater And Decelerator
US Patent:
6962245, Nov 8, 2005
Filed:
May 22, 2003
Appl. No.:
10/443660
Inventors:
Malcolm H. Ray - Canton ME, US
Chuck A. Plaxico - Westerville OH, US
Chuck A. Plaxico - Westerville OH, US
Assignee:
Worcester Polytechnic Institute - Worcester MA
International Classification:
E01F009/018
US Classification:
188377, 188372, 188374, 404 10
Abstract:
Tunable pull-through energy attenuator and decelerator devices is disclosed which provide for variable force-time profiles, deceleration and kinetic energy attenuation of moving objects so as to prevent damage or injury to impacting objects, vehicles or persons. The device employs either consumable inelastic or reusable, viscoelastic deforming elements, such as tubes, rods, plates or strips, which absorb substantial amounts of energy through repeated inelastic or viscoelastic deformation when the deforming element is pulled-through a tunable array of rigid pins having a variety of configurations and settings. The disclosed devices provide for variable force-time profiles which control the cumulative deformation and thereby the amount of energy absorbed and rate of deceleration of impacting objects. The device may be readily adapted and deployed as highway vehicle guardrails, road barriers or crash cushions for frontal and side impacts and as load attenuators for crash-resistant aircraft seats, spacecraft landing pods, crash-resistant aircraft landing gear, aircraft and vehicle passenger restraint harnesses, cargo tie-downs, vehicle bumpers and collapsible vehicle steering columns.