PATENTS RELATED TO FIFTH WHEEL VEHICLES

Dr. Demchick has handled client patent matters related to fifth wheel vehicles. In addition, Dr. Demchick's parents are full-time fifth wheel residents.

Dr. Demchick is a scientist with a quarter of a century of research experience in academic, industrial and governmental settings.

If you are considering patent protection for an invention, Dr. Demchick will be glad to discuss the matter with you. There is no charge for an initial discussion.

The following sampling is to give you some sense of the types of fifth wheel vehicles related inventions which have received United States patent protection. The patent list is not exhaustive and is certainly not a substitute for a proper patent search . It should be noted that only U.S. Patents are included.

It should be noted that spelling, form and typographical errors in the original patents are preserved here.

Fifth wheel hitch requiring reduced or no lubricant (United States Patent 7,152,869)

Fifth wheel mounting and cross member assembly (United States Patent 7,140,633)

Device for indicating the locking state of a fifth wheel coupling and sensor arrangement (United States Patent 7,140,632)

Fifth wheel slide rail and related method of assembly (United States Patent 7,114,740)

Unitized fifth wheel and rear axle suspension (United States Patent 7,111,862)

Carrier assembly for movably supporting a fifth wheel assembly (United States Patent 7,108,274)

Fifth wheel hitch device with pivotal locking ramp (United States Patent 7,100,935)

Fifth wheel mounting frame (United States Patent 7,100,933)

Lift mechanism for fifth wheel trailer tube and foot pad (United States Patent 7,097,158)

Connection arrangement comprising a fifth wheel (United States Patent 7,044,492)

Fifth wheel lube plate having a perforated support member (United States Patent 7,036,839)

Fifth wheel pin box assembly (United States Patent 6,986,524)

Fifth wheel release lever (United States Patent 6,951,332)

Fifth wheel hitch with rocker (United States Patent 6,942,236)

Fifth wheel release tool (United States Patent 6,935,664)

Fifth wheel coupling (United States Patent 6,893,039)

Pivoting fifth wheel hitch trailer pin assembly (United States Patent 6,877,757)

Fifth wheel lubrication system (United States Patent 6,874,599)

Device for indicating the locking state of a fifth wheel coupling and sensor arrangement (United States Patent 6,866,283)

Hitch ball engaging assembly and apparatus usable to interconnect fifth wheel trailer coupling to a gooseneck tractor coupling (United States Patent 6,808,195)

Fifth wheel assembly for bed (United States Patent 6,792,630)

Self-lubricating trailer bearing plate for fifth wheel (United States Patent 6,773,023)

Force-sensing fifth wheel (United States Patent 6,739,611)

Carrier assembly for a fifth wheel (United States Patent 6,736,420)

Fifth wheel (United States Patent 6,729,635)

Shock absorber for fifth wheel trailer hitch (United States Patent 6,726,396)

Fifth wheel helper (United States Patent 6,726,179)

Fifth wheel for bed (United States Patent 6,725,956)

Pivotal pin lock for fifth wheel hitch (United States Patent 6,695,337)

Fifth wheel suspension (United States Patent 6,692,013)

Adjustable fifth wheel hitch with rollers (United States Patent 6,685,210)

Adjustable fifth wheel hitch with improved locking mechanism (United States Patent 6,682,089)

Fifth wheel for the tractor or the trailer of an articulated truck (United States Patent 6,672,608)

Fifth wheel trailer hitch adaptor system (United States Patent 6,659,490)

Mounting/bearing device for a fifth wheel having a stirrup-shaped bearing pedestal and a bridge (United States Patent 6,644,678)

Fifth wheel coupling (United States Patent 6,623,024)

Sliding device for a fifth wheel (United States Patent 6,592,140)

Semi-tractor fifth wheel sensor and rail car stanchion sensor for a trailer (United States Patent 6,587,041)

Motion-dampening fifth-wheel hitch (United States Patent 6,581,951)

Glider fifth wheel attachment (United States Patent 6,557,883)

Fifth wheel with rotatable bearing plate (United States Patent 6,554,310)

Fifth wheel kingpin retaining bar (United States Patent 6,547,270)

Air released fifth wheel assembly (United States Patent 6,520,527)

End dump fifth wheel trailer (United States Patent 6,505,891)

Under-bed fifth wheel mounting system (United States Patent 6,502,846)

Fifth wheel safety catch (United States Patent 6,491,317)

Carrier assembly for movably supporting a fifth wheel assembly (United States Patent 6,488,305)

Combination fifth wheel and gooseneck hitch (United States Patent 6,485,045)

Under-bed fifth wheel mounting system (United States Patent 6,467,791)

Electronic system for monitoring a fifth wheel hitch (United States Patent 6,452,485)

Covering for fifth wheel of a tractor trailer (United States Patent 6,443,476)

Chassis for a fifth wheel travel trailer (United States Patent 6,439,648)

Fifth wheel locking device (United States Patent 6,427,496)

Fifth wheel coupler (United States Patent 6,402,176)

Tilting fifth wheel trailer hitch (United States Patent 6,398,249)

Fifth wheel vehicle trailer (United States Patent 6,394,533)

Glider fifth wheel attachment (United States Patent 6,386,570)

Fifth-wheel hitch coupling adapter (United States Patent 6,386,569)

Fifth wheel (United States Patent 6,371,504)

Automatic glider fifth wheel attachment (United States Patent 6,357,777)

Fifth wheel coupler (United States Patent 6,352,277)

Double shear trailer bearing plate for fifth wheel (United States Patent 6,322,093)

Sliding hitch for fifth wheel trailers (United States Patent 6,308,977)

Force-sensing fifth wheel (United States Patent 6,302,424)

Method and apparatus for modifying a truck with a fifth wheel (United States Patent 6,302,423)

Electronic system for monitoring a fifth wheel hitch (United States Patent 6,285,278)

Air operated fifth wheel uncoupling apparatus (United States Patent 6,272,949)

Automatic fifth wheel loading and unloading system (United States Patent 6,250,650)

Glider fifth wheel attachment (United States Patent 6,247,720)

Unitary pedal control of brake and fifth wheel deployment via side and end articulation with additional unitary pedal control of height of patient support (United States Patent 6,240,579)

Chassis for a fifth wheel travel trailer (United States Patent 6,231,115)

Adaptor structure for towing a trailer having a pintle eye behind a truck having a fifth wheel mount (United States Patent 6,203,046)

Fifth wheel king pin release mechanism (United States Patent 6,201,252)

Reduced weight fifth wheel assembly (United States Patent 6,199,889)

Fifth wheel (United States Patent 6,182,996)

Stepped lock plunger fifth wheel hitch (United States Patent 6,179,316)

Tilting fifth wheel trailer hitch (United States Patent 6,170,851)

Fifth wheel type hitch (United States Patent 6,170,850)

Locking apparatus for fifth wheel king pin (United States Patent 6,161,402)

Fifth wheel hitch bumper (United States Patent 6,158,758)

Fifth wheel coupling safety system (United States Patent 6,100,794)

Pneumatic greasing system for a fifth wheel (United States Patent 6,098,754)

Fifth wheel hitch release (United States Patent 6,095,544)

Flatbar fifth wheel release handle (United States Patent 6,092,825)

Semitrailer fifth wheel coupling pin for semitrailer and attachment arrangement (United States Patent 6,073,952)

Converter dolly with adjustable fifth wheel and axle assembly for use in multiple trailer rigs (United States Patent 6,056,309)

Fifth wheel ball hitch latching assembly (United States Patent 6,050,588)

Fifth wheel rollback trailer (United States Patent 6,045,316)

Fifth wheel hitch requiring reduced or no lubricant (United States Patent 7,152,869)

Fifth wheel mounting and cross member assembly (United States Patent 7,140,633)

Device for indicating the locking state of a fifth wheel coupling and sensor arrangement (United States Patent 7,140,632)

Fifth wheel slide rail and related method of assembly (United States Patent 7,114,740)

Unitized fifth wheel and rear axle suspension (United States Patent 7,111,862)

Carrier assembly for movably supporting a fifth wheel assembly (United States Patent 7,108,274)

Fifth wheel hitch device with pivotal locking ramp (United States Patent 7,100,935)

Fifth wheel mounting frame (United States Patent 7,100,933)

Lift mechanism for fifth wheel trailer tube and foot pad (United States Patent 7,097,158)

Connection arrangement comprising a fifth wheel (United States Patent 7,044,492)

Fifth wheel lube plate having a perforated support member (United States Patent 7,036,839)

Fifth wheel pin box assembly (United States Patent 6,986,524)

Fifth wheel release lever (United States Patent 6,951,332)

Fifth wheel hitch with rocker (United States Patent 6,942,236)

Fifth wheel release tool (United States Patent 6,935,664)

Fifth wheel coupling (United States Patent 6,893,039)

Pivoting fifth wheel hitch trailer pin assembly (United States Patent 6,877,757)

Fifth wheel lubrication system (United States Patent 6,874,599)

Device for indicating the locking state of a fifth wheel coupling and sensor arrangement (United States Patent 6,866,283)

Hitch ball engaging assembly and apparatus usable to interconnect fifth wheel trailer coupling to a gooseneck tractor coupling (United States Patent 6,808,195)

Fifth wheel assembly for bed (United States Patent 6,792,630)

Self-lubricating trailer bearing plate for fifth wheel (United States Patent 6,773,023)

Force-sensing fifth wheel (United States Patent 6,739,611)

Carrier assembly for a fifth wheel (United States Patent 6,736,420)

Fifth wheel (United States Patent 6,729,635)

Shock absorber for fifth wheel trailer hitch (United States Patent 6,726,396)

Fifth wheel helper (United States Patent 6,726,179)

Fifth wheel for bed (United States Patent 6,725,956)

Pivotal pin lock for fifth wheel hitch (United States Patent 6,695,337)

Fifth wheel suspension (United States Patent 6,692,013)

Adjustable fifth wheel hitch with rollers (United States Patent 6,685,210)

Adjustable fifth wheel hitch with improved locking mechanism (United States Patent 6,682,089)

Fifth wheel for the tractor or the trailer of an articulated truck (United States Patent 6,672,608)

Fifth wheel trailer hitch adaptor system (United States Patent 6,659,490)

Mounting/bearing device for a fifth wheel having a stirrup-shaped bearing pedestal and a bridge (United States Patent 6,644,678)

Fifth wheel coupling (United States Patent 6,623,024)

Sliding device for a fifth wheel (United States Patent 6,592,140)

Semi-tractor fifth wheel sensor and rail car stanchion sensor for a trailer (United States Patent 6,587,041)

Motion-dampening fifth-wheel hitch (United States Patent 6,581,951)

Glider fifth wheel attachment (United States Patent 6,557,883)

Fifth wheel with rotatable bearing plate (United States Patent 6,554,310)

Fifth wheel kingpin retaining bar (United States Patent 6,547,270)

Air released fifth wheel assembly (United States Patent 6,520,527)

End dump fifth wheel trailer (United States Patent 6,505,891)

Under-bed fifth wheel mounting system (United States Patent 6,502,846)

Fifth wheel safety catch (United States Patent 6,491,317)

Carrier assembly for movably supporting a fifth wheel assembly (United States Patent 6,488,305)

Combination fifth wheel and gooseneck hitch (United States Patent 6,485,045)

Under-bed fifth wheel mounting system (United States Patent 6,467,791)

Electronic system for monitoring a fifth wheel hitch (United States Patent 6,452,485)

Covering for fifth wheel of a tractor trailer (United States Patent 6,443,476)

Chassis for a fifth wheel travel trailer (United States Patent 6,439,648)

Fifth wheel locking device (United States Patent 6,427,496)

Fifth wheel coupler (United States Patent 6,402,176)

Tilting fifth wheel trailer hitch (United States Patent 6,398,249)

Fifth wheel vehicle trailer (United States Patent 6,394,533)

Glider fifth wheel attachment (United States Patent 6,386,570)

Fifth-wheel hitch coupling adapter (United States Patent 6,386,569)

Fifth wheel (United States Patent 6,371,504)

Automatic glider fifth wheel attachment (United States Patent 6,357,777)

Fifth wheel coupler (United States Patent 6,352,277)

Double shear trailer bearing plate for fifth wheel (United States Patent 6,322,093)

Sliding hitch for fifth wheel trailers (United States Patent 6,308,977)

Force-sensing fifth wheel (United States Patent 6,302,424)

Method and apparatus for modifying a truck with a fifth wheel (United States Patent 6,302,423)

Electronic system for monitoring a fifth wheel hitch (United States Patent 6,285,278)

Air operated fifth wheel uncoupling apparatus (United States Patent 6,272,949)

Automatic fifth wheel loading and unloading system (United States Patent 6,250,650)

Glider fifth wheel attachment (United States Patent 6,247,720)

Unitary pedal control of brake and fifth wheel deployment via side and end articulation with additional unitary pedal control of height of patient support (United States Patent 6,240,579)

Chassis for a fifth wheel travel trailer (United States Patent 6,231,115)

Adaptor structure for towing a trailer having a pintle eye behind a truck having a fifth wheel mount (United States Patent 6,203,046)

Fifth wheel king pin release mechanism (United States Patent 6,201,252)

Reduced weight fifth wheel assembly (United States Patent 6,199,889)

Fifth wheel (United States Patent 6,182,996)

Stepped lock plunger fifth wheel hitch (United States Patent 6,179,316)

Tilting fifth wheel trailer hitch (United States Patent 6,170,851)

Fifth wheel type hitch (United States Patent 6,170,850)

Locking apparatus for fifth wheel king pin (United States Patent 6,161,402)

Fifth wheel hitch bumper (United States Patent 6,158,758)

Fifth wheel coupling safety system (United States Patent 6,100,794)

Pneumatic greasing system for a fifth wheel (United States Patent 6,098,754)

Fifth wheel hitch release (United States Patent 6,095,544)

Flatbar fifth wheel release handle (United States Patent 6,092,825)

Semitrailer fifth wheel coupling pin for semitrailer and attachment arrangement (United States Patent 6,073,952)

Converter dolly with adjustable fifth wheel and axle assembly for use in multiple trailer rigs (United States Patent 6,056,309)

Fifth wheel ball hitch latching assembly (United States Patent 6,050,588)

Fifth wheel rollback trailer (United States Patent 6,045,316)

Fifth wheel hitch requiring reduced or no lubricant (United States Patent 7,152,869)

Fifth wheel mounting and cross member assembly (United States Patent 7,140,633)

Device for indicating the locking state of a fifth wheel coupling and sensor arrangement (United States Patent 7,140,632)

Fifth wheel slide rail and related method of assembly (United States Patent 7,114,740)

Unitized fifth wheel and rear axle suspension (United States Patent 7,111,862)

Carrier assembly for movably supporting a fifth wheel assembly (United States Patent 7,108,274)

Fifth wheel hitch device with pivotal locking ramp (United States Patent 7,100,935)

Fifth wheel mounting frame (United States Patent 7,100,933)

Lift mechanism for fifth wheel trailer tube and foot pad (United States Patent 7,097,158)

Connection arrangement comprising a fifth wheel (United States Patent 7,044,492)

Fifth wheel lube plate having a perforated support member (United States Patent 7,036,839)

Fifth wheel pin box assembly (United States Patent 6,986,524)

Fifth wheel release lever (United States Patent 6,951,332)

Fifth wheel hitch with rocker (United States Patent 6,942,236)

Fifth wheel release tool (United States Patent 6,935,664)

Fifth wheel coupling (United States Patent 6,893,039)

Pivoting fifth wheel hitch trailer pin assembly (United States Patent 6,877,757)

Fifth wheel lubrication system (United States Patent 6,874,599)

Device for indicating the locking state of a fifth wheel coupling and sensor arrangement (United States Patent 6,866,283)

Hitch ball engaging assembly and apparatus usable to interconnect fifth wheel trailer coupling to a gooseneck tractor coupling (United States Patent 6,808,195)

Fifth wheel assembly for bed (United States Patent 6,792,630)

Self-lubricating trailer bearing plate for fifth wheel (United States Patent 6,773,023)

Force-sensing fifth wheel (United States Patent 6,739,611)

Carrier assembly for a fifth wheel (United States Patent 6,736,420)

Although his recognition as a registered patent agent permits him to represent others in all patent matters before the United States Patent and Trademark Office, Dr. Demchick limits his practice to patent matters involving inventions for which he is confident that his expertise will allow him to serve his client well. He will gladly discuss whether he is comfortable handling cases involving inventions in a particular field. He will err on the side of declining cases if he has uncertainty about his ability to do what is needed in the case. Dr. Demchick does not represent clients in court. However, he refers clients to a patent attorney who does represent others in court, if it appears likely that patent related representation in court is appropriate. Dr. Demchick prepares and files non-provisional (regular) patent applications and provisional patent applications. He prepares and files utility patent applications and design patent applications. He prepares and files U.S. patent applications and international patent applications under the Patent Cooperation Treaty (PCT). He prepares and files applications to enter the U.S. National Phase for inventions for which international patent applications (PCT) were already filed. One of the matters he discusses with each client or potential client is which type of application(s) best meets that client's needs. He usually does a patent search (patentability search) as part of the preparation of a patent application. He discusses the value of patent searching with each inventor before agreeing to prepare a patent application for that inventor.