Abstract: A carpet putting surface having a longitudinal length longer than its lateral width and comprising a predetermined putting location marking, and a plurality of substantially “V” shaped markings placed apart from the predetermined putting location marking, with each substantially “V” shaped marking having the open end of the “V” closer to the predetermined putting location marking than the closed end of the “V.” An apparatus for practicing golf ball putting comprising a carriage having a spool of carpet putting surface and a golf ball retriever is also disclosed and adapted for use on a bowling alley lane.

Abstract: A carpet putting surface having a longitudinal length longer than its lateral width and comprising a predetermined putting location marking, and a plurality of substantially “V” shaped markings placed apart from the predetermined putting location marking, with each substantially “V” shaped marking having the open end of the “V” closer to the predetermined putting location marking than the closed end of the “V.” An apparatus for practicing golf ball putting comprising a carriage having a spool of carpet putting surface and a golf ball retriever is also disclosed and adapted for use on a bowling alley lane.

Abstract: Round spring wire (20) FIG. (1) formed into concave tri-elliptic wire (22) FIG. (2-A) and processed to include reversing wave crests (24) FIG. (3-A) having not opposed crest contact (28) FIG. (3-B) requires forming into ring or shape and heat treated as completed elastic form of locking ring device. Unique featured locking of joints and locking of standard fasteners is provided by continuous elastic internal beaming in combination with proportional penetration of joint surfaces by a multitude of relatively sharp reversing wave crests, which are always erect. Useful form is readily shaped and size configured in flat plane such as essentially round form of locking ring device (34) FIG. (4). The locking ring device is used for locking joint by curl formed flange (47b) FIG. (5-B), for plural use in locking of joint by single formed rivet (59) FIG. (6-B), for plural locking of joint by single screw thread fastener such as socket cap screw (78a) FIG.