Issued Patents All Time
Showing 1–25 of 76 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12410879 | Latch assembly for use with an inversion drum | Craig Lawrence Noggle, Robert F. Crane, Mark D. Randa | 2025-09-09 |
| 12281726 | Pipe extraction assisted by pre-stressed strand | Robert F. Crane, Mark D. Randa | 2025-04-22 |
| 12092257 | Lead pipe spudding prior to extraction or remediation | Robert F. Crane, Mark D. Randa | 2024-09-17 |
| 11913570 | System for applying torsional force to a buried pipe to facilitate extraction | Mark D. Randa, Robert F. Crane | 2024-02-27 |
| 11619336 | Pipe slitting machine with rope storage reel | Mark D. Randa, Robert F. Crane, Kelvin C. Aus | 2023-04-04 |
| 11112033 | Pipe extraction assisted by pre-stressed strand | Robert F. Crane, Mark D. Randa | 2021-09-07 |
| 10969053 | Lead pipe spudding prior to extraction or remediation | Robert F. Crane, Mark D. Randa | 2021-04-06 |
| 10927602 | Reversible pneumatic pipe ramming tool | Robert F. Crane, Mark D. Randa, Kelvin C. Aus | 2021-02-23 |
| 10883628 | Extraction of ductile pipe | Robert F. Crane, Mark D. Randa | 2021-01-05 |
| 10584807 | Extraction of ductile pipe | Robert F. Crane, Mark D. Randa | 2020-03-10 |
| 10550989 | Latch assembly for use with an inversion drum | Craig Lawrence Noggle, Robert F. Crane, Mark D. Randa | 2020-02-04 |
| 10415722 | Split ring ram adapter with cam adjustment | Robert F. Crane, Mark D. Randa | 2019-09-17 |
| 10246949 | Slip style rod spinner for pipe bursting machine | Robert F. Crane, Walter George Thompson | 2019-04-02 |
| 10161201 | Powered slip actuation | Robert F. Crane, Mark D. Randa | 2018-12-25 |
| 9915109 | Slip style rod spinner for pipe bursting machine | Robert F. Crane, Walter George Thompson | 2018-03-13 |
| 9328760 | Quick connect rods | Robert F. Crane | 2016-05-03 |
| 8979435 | Rod pulling and pushing machine for pipe bursting | Robert F. Crane | 2015-03-17 |
| 8955586 | Beacon assembly | Mark D. Randa, Robert F. Crane | 2015-02-17 |
| 8789891 | Method and apparatus for creating a planar cavern | Samuel T. Ariaratnam, Robert F. Crane | 2014-07-29 |
| 8646846 | Method and apparatus for creating a planar cavern | Samuel T. Ariaratnam, Robert F. Crane | 2014-02-11 |
| 8640793 | Dynamic steering tool | — | 2014-02-04 |
| 8225885 | Joint for use in back reaming | Robert F. Crane | 2012-07-24 |
| 8157478 | Rod pushing and pulling machine | Robert F. Crane | 2012-04-17 |
| 7909539 | Rod pulling and pushing machine for pipe bursting | Robert F. Crane | 2011-03-22 |
| 7828903 | Method and apparatus for removing tuberculation from sanitary water pipelines | — | 2010-11-09 |