RANDALL FRANK CHAPMAN
Pilots at Old Elk Nck Rd, Elkton, MD
License number
Maryland A2529600
Issued Date
Mar 2015
Expiration Date
Mar 2017
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
1039 Old Elk Neck Rd, Elkton, MD 21921
Professional information
Heat-Shrinkable Uhmv Polymer Film, Tubing, And Roll Covers
US Patent:
2002009, Jul 25, 2002
Filed:
Dec 3, 1998
Appl. No.:
09/194858
Inventors:
FRANK M. CHAPMAN - ELKTON MD, US
RANDALL F. CHAPMAN - ELKTON MD, US
RANDALL F. CHAPMAN - ELKTON MD, US
International Classification:
F16C013/00
US Classification:
492/056000
Abstract:
PTFE and other ultra high melt viscosity (UHMV) polymeric materials, such as TFM, and UHMW polyethylene are used, rather than FEP or PFA, in the HST process as it has been found that UHMV polymers may be readily substituted for FEP in the HST process with little significant change in the existing process steps. Appropriate expansion of a PTFE tube, after fabricating to the proper dimensions, may be obtained with pressure and heat treatment at a temperature of the order of 200° F., rather than 600-700° F. and the resulting tube is sufficiently stable to be shipped for later shrink application at comparable temperatures onto a roll at a mill. The resulting roll cover has improved mechanical properties at high temperatures and man be reinforced with a conductive additive for providing anti-static qualities or other additives to improve its wear and compressive strength. Also, the UHMV polymers may be processed in the form of film to produce improved heat-shrinkable film that is shrinkable at comparatively low temperatures and particularly heretofore unrealized UHMWPE heat-shrinkable film
Covered Marine Deck Structure For Rope Contact
US Patent:
8333162, Dec 18, 2012
Filed:
Aug 12, 2010
Appl. No.:
12/806403
Inventors:
Randall F. Chapman - Elkton MD, US
Frank M. Chapman - Elkton MD, US
Paul Lippman - Linconville ME, US
Frank M. Chapman - Elkton MD, US
Paul Lippman - Linconville ME, US
Assignee:
Fluoron Inc. - Elkton MD
International Classification:
B63B 21/04
US Classification:
114218
Abstract:
A marine deck structure for rope contact having an impermeable cover for the purpose of preventing chaffing and wear of ropes is disclosed. Provided is a marine deck structure, such as a bullnose, or H-Bit covered with a durable impermeable cover that protects the structure from the harsh elements and provides a smooth low abrading surface. In another embodiment, rope chaffing surfaces on a marine vessel or dock are covered with an impermeable cover to reduce rope wear. The impermeable cover in one embodiment comprises ultra high molecular weight polyethylene (UHMWPE). A number of ways of covering the marine deck structures are provided, such as positioning cover sheets around or on the support member and attaching the cover by, for example, welding, adhering, or thermally shrinking.