A dyestuff of the formula ##STR1## in which R represents alkyl, alkenyl, cycloalkyl, aralkyl, aryl or, preferably, hydrogen, R.sub.1 represents alkyl, alkenyl, cycloalkyl, aralkyl, a heterocyclic structure or, preferably, aryl, X represents --COOH, --COO.sup..crclbar. cation.sup..sym., a modified carboxyl group, the radical --SO.sub.2 --T or a heterocyclic radical, T being alkyl, alkenyl or aryl, and M represents hydrogen or a cation and A and B can carry non-ionic substituents and/or a --COOH g...

A compound of the formula ##STR1## wherein R is a straight or branched chain alkyl group having 1 to 17 carbon atoms or a cycloalkyl group having 3 to 6 carbon atoms; as well as the physiologically acceptable acid addition salts thereof. A method of production of the compounds, pharmaceutical compositions containing them, and methods of use are also disclosed. The compounds of the present invention are useful in the treatment of angina pectoris, hypertension, and certain forms of arrhythmia.

A hydraulic exercise apparatus includes a hydraulic pump for pumping fluid through a fluid circuit in response to movement of an exercise member along an exercise stroke in such a manner that the force required to move the exercise member is dependent upon the pressure of fluid pumped. The fluid circuit includes valve means for allowing fluid to flow through the circuit only when a fluid pressure exceeds a selected pressure. The hydraulic exercise apparatus further includes pressure selection me...

Exercise equipment wherein a number of exercises can be performed, and wherein there is provided a frame having a base platform for standing and a seat which is movable between a forward and a rearward position. A long arm is provided with a handle at one end, and a short arm with leg engaging rollers at one end of the short arm, both arms being carried by a rotatable shaft coupled to an hydraulic pump. The height of the pump is adjustable.

An exercise device comprises an elastic loop having free ends spliced together, generally tubular handles disposed in diametrically opposed relation to one another on the loop and an elastic retainer sleeve surrounding intermediate portions of the loop between the handles. The device is conformable for use in performing a wide variety of exercises and for performing a selected number of repetitions of each exercise by grasping the handles and stretching against the resistance load of the loop an...

A weight bar assembly in which weight supporting elements at each end of a main bar support a variable number of weights. The weights have a center of gravity which is laterally displaced to one side of the main bar. The main bar of the assembly is supported at a distance vertically above the ground at all times, either by a vertical connection bar or by the weights themselves. The weight bar assembly further includes handles connected to the main bar and including gripping portions which are la...

A forearm exercising device having a support frame and a grip secured to one end of a shaft rotatably secured in said support frame and a crank arm secured on the opposite end of said shaft. A cylinder such as a shock absorber operably secured to the shaft controls the rate of movement of the shaft and the grip or crank arm to which the user applies his arm regardless of the force exerted thereon. An upper arm support and restraint member is adjustably secured to align the medial axis of the for...

In a weight raising exercise device a pair of upstanding lever assemblies, pivotally mounted on an open framework, are manually moved, alternately, toward one end of the frame in a push and pull action for raising and lowering framework guided weights selectively connected alternately with the respective lever assembly by chains entrained over sprockets and engaged with the weights by switch actuated solenoids. A fulcrum axle assembly, mounted on the framework between and pivotally connected wit...

An exercise device is disclosed that operates with a swinging door to assist one in doing situps and related exercises. The device has a pair of wedge stops and strap means are secured to the stops and extended therebetween. Adjustment connection means are formed in the strap means to allow the separation of the strap means into two separate pieces each secured to one of the stops, and further to allow for adjustment of the overall length of the strap means. The strap means is formed of an inela...

A adaptive deciding method and apparatus for frequency shift key signals are provided to sample the demodulated FSK signal, input the values of the sample points in sequence to a sample group, and compare at least a pair of the sample points, thereby finding out the central point of the FSK signal to improve decoding due to signal attenuation.