James A. Westhoff
31Patents
13h-index
11Co-inventors
78Inventor score
Filing activity: May 5, 1982 → Oct 28, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4387900A | Method and apparatus for providing watertight seal for manhole pipe connection | Emerging Cross-Sectional Technologies | 66 | Expired |
| US4621941A | Manhole riser having integral flexible waterlock for manhole covers and having a water tight seal for sealed manhole covers | Fixed Constructions | 44 | Expired |
| US5081802A | Method and apparatus for lining manhole assemblies and the like | Fixed Constructions | 35 | Expired |
| US4746127A | Adjustable clamping band for gaskets and method for using same | Fixed Constructions | 32 | Expired |
| US4737220A | Method of making a manhole riser having integral flexible waterlock for manhole covers and having a water tight seal for sealed manhole covers | Emerging Cross-Sectional Technologies | 32 | Expired |
| US4890863A | Metallic adjustable clamping band for gaskets | Mechanical Engineering; Lighting; Heating | 31 | Expired |
| US5299884A | Water lock method and apparatus | Fixed Constructions | 31 | Expired |
| US5248154A | Bidirectional gasket | Mechanical Engineering; Lighting; Heating | 28 | Expired |
| US5054794A | Clamping band for gaskets and the like and expansion means therefor | Emerging Cross-Sectional Technologies | 23 | Expired |
| US6126173A | Extruded gasket for cored manholes | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US4903970A | Apparatus for providing a watertight seal for manhole pipe connections including a foldable gasket and clamping band assembly and expansion means for installing the gasket and clamping band assembly | Emerging Cross-Sectional Technologies | 21 | Expired |
| US4711455A | Gasket for use in manholes and including clamping band having cooperating projections and grooves for preventing relative axial movement of the opposing ends of the clamping band during installation and for facilitating expansion by an expansion jack | Emerging Cross-Sectional Technologies | 18 | Expired |
| US7108101B1 | Manhole insert for manufacture of a cast member and to provide a step insert having increased structural and holding strength | Performing Operations; Transporting | 16 | Expired |
| US6651949B1 | Apparatus for casting a gasket and associated positioning member into an opening and a cast member for receiving a conduit | Performing Operations; Transporting | 13 | Expired |
| US6406025B1 | Gasket and method for fabrication and use with corrugated pipe | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US6568691B1 | Method and apparatus for forming cast members having embedded boot type gaskets | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US7677829B2 | Inserts and reusable holder therefor | Emerging Cross-Sectional Technologies | 9 | Active |
| US5997006A | Bidirectional gasket having water energizing pockets | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US5884438A | Lift insert assembly and fabrication assembly method therefore | Performing Operations; Transporting | 7 | Expired |
| US6607219B2 | Expansion type clamping band characterized by simplified design and ease of use | Emerging Cross-Sectional Technologies | 7 | Expired |
| US6371436B1 | Placement ring assembly having magnetic securing means | Performing Operations; Transporting | 6 | Expired |
| US6921085B2 | Packaging design incorporating gasket clamping assemblies and installation instructions | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US5217237A | Bidirectional gasket having water energizing pockets | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| USRE34787E | Bidirectional gasket having water energizing pockets | General | 4 | Expired |
| US8794639B2 | Sealing assembly having liquid-filled seal | Mechanical Engineering; Lighting; Heating | 4 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.