What do windscreen wipers, grocery bags, Kevlar, fire escapes and jockstraps all have in common?

If you are talking about the jockstrap you wear, gmack, they don't have anything in common. The others are all large objects.

A tad below the belt there, shady.

Kevlar is a large object?
And I'll have you know, Shady, I'm a big strapping lad.

All were invented by women.

Joe Cartledge invented the jockstrap.

Jock Strap

In 1920, Joe Cartledge the Owner and founder of the Guelph Elastic Hosiery Company invented the first jock strap or athletic supporter. The jock strap was marketed under the name Protex.
http://inventors.about.com/library/inventors/blclothing.htm

I am having trouble authenticating the references I have seen for women inventing the jockstrap as none actually name a woman. In fact I have seen one site list a Charles Bennett as its inventor.
A few names are given in the site below:
http://www.factmonster.com/ipka/A0768070.html


The jockstrap was invented in 1874 by C.F. Bennett of a Chicago sporting goods company, Sharp & Smith, to provide comfort and support for bicycle jockeys riding the cobblestone streets of Boston. In 1897 Bennett's newly-formed Bike Web Company patented and began mass-producing the Bike Jockey Strap. The Bike Web Company later became known as the Bike Company. Today, Bike is still the market leader in jockstrap sales.

https://en.wikipedia.org/wiki/Jockstrap

Besides the jockstrap inventor, the names of the women involved are:

Windscreen wipers: Mary Anderson designed them to clear snow off windscreens even before Ford had started his company.

Grocery bags: Margaret Knight - she invented the machine that glued and folded the paper to create these bags before moving on to developing aircraft rotary engines among other things.

Stephanie Kwolek: resarch chemist who first created Kevlar, used in such items as bulletproof vests.

Anna Connelly: Fire escapes on the outside of tall buildings.