Abstract: A throwing dart provided with a tail portion which collapses into a smaller cross-sectional area to reduce interference with subsequently thrown darts. The tail portion includes a stem portion having an elongated cylindrical shaft provided with a disk-shaped cam member. A slotted tubular sleeve is slidably and rotatably affixed to the shaft, the slots opening to the axially rearward end of the sleeve. A shaped flight or vane is fitted to each slot and flexibly retained therein by a resilient holding ring which retains the forward ends of the flights to the sleeve. In operation, the tail portion is cocked by sliding the sleeve and flight assembly in a rearward direction such that the cam urges the flights into an extended, fanned position. When the dart is thrown and impacts the game board, the tail portion moves forwardly due to inertia, and the cam is received in angled recesses in the flights to permit them to retract toward the longitudinal axis of the dart.
Abstract: A portable hand control device for operating the brake and accelerator foot pedals of a motor vehicle is disclosed. The device comprises a pair of collapsible control rods, each swivelingly connected at one end to a respective foot pedal clamp and at the other end to an elongate handle adapted to be held in either hand of the user. The handle and control rods are free of any operative connection to the motor vehicle apart from the foot pedal clamps.
Abstract: 3H-1,2,3-Triazolo[4,5-b]pyridines substituted in the 3-position have utility as analgesic, anti-inflammatory and anti-pyretic agents. They are prepared by diazotization of a 3-amino-2-(substitute) aminopyridine.
Type:
Grant
Filed:
October 3, 1975
Date of Patent:
December 28, 1976
Assignee:
Merck & Co., Inc.
Inventors:
Robert L. Clark, Arsenio A. Pessolano, Tsung-Ying Shen
Abstract: Pharmaceutical Compositions based on 4-(Benzoxazol-2-yl)phenylacetic acids, alcohols, esters, amides and their non-toxic pharmaceutically acceptable salts and method of treating abnormal platelet aggregation.
Type:
Grant
Filed:
February 10, 1975
Date of Patent:
March 30, 1976
Assignee:
Merck & Co., Inc.
Inventors:
Tsung-Ying Shen, Jorge P. Li, Conrad P. Dorn, Jr.