Resources Contact Us Home
Browse by Category: Main > Construction
Class Information
Number: 182/157
Name: Fire escape, ladder, or scaffold > Unitary foldable, rigid scaffold or ladder > Collapsible ladder > Lazy tong type
Description: Device comprising lazy tong construction.

Sub-classes under this class:

Class Number Class Name Patents
182/158 Mechanical or power-extending means 1

Patents under this class:

Patent Number Title Of Patent Date Issued
6802393 Foldable ladder Oct. 12, 2004
5725069 Extendable pyramid ladder system Mar. 10, 1998
4733752 Extensible ladder for boats Mar. 29, 1988
4571144 Tailgate ramp for attaching to the tailgate of a truck Feb. 18, 1986
4527941 Expandable support structure usable as loading ramp Jul. 9, 1985
4076102 Trap door and folding ladder arrangement Feb. 28, 1978

  Recently Added Patents
Amnion-derived cells, methods of making and uses thereof
Automated incorporation of expert feedback into a monitoring system
Picture information coding device and coding method
MIM capacitor and associated production method
Signal apparatus for facilitating safe backup of vehicles
Use of tris(hydroxymethyl) aminomethane for the stabilization of peptides, polypeptides and proteins
Solid-state imaging device and method for manufacturing the same
  Randomly Featured Patents
Substituted furans and furanones for the treatment of inflammation
Ultrasonic nebulizer with metal coated ultrasonic generator
Hair styling iron with interchangeable combs
Austin triangle
Belt clip with low-friction lining
Statin derivatives
Loader for gear burnishing machine
Key chain box
Multi-layer orientation-changing password