US 2018/0015335 A1 · Self Locking Racket Stringing Machine Tensioner

Abstract

An automatically braking tensioner for a racket stringing machine is disclosed. The tensioner comprises a tensioner housing, a drum connected to the tensioner housing, a string gripper connected to the drum, a disk brake having an axle extending from an axis of the disc brake, a lever disposed in the tensioner housing, and a brake lever disposed in the tensioner housing. The disk brake is connected to a stringing machine body and is rotably stationary relative to the stringing machine body. As the tensioner is rotated about the disk brake, the brake lever is engaged with the disk brake when the tensioning force is equal to a desired force which can be established my means of a compression spring. In some embodiments the tension can be altered by varying the tension or position of the spring.

Claims20

Dependent claims

1) A tensioner arm for a racket stringing machine comprising

a) a tensioner housing;
b) a lever disposed in said tensioner housing;
c) a drum connected to said lever;
d) a string gripper connected to said drum;
e) a compression spring disposed between said lever and an internal portion of said tensioner housing.

2 more elements

17) A racket stringing machine comprising

a) a machine base;
b) a rotational plate base attached to said machine base;
c) a self-locking tensioner attached to said machine base, wherein said self-locking tensioner further comprises
i) a tensioner housing;
ii) a drum;
iii) a string gripper connected to said drum;
iv) a disk brake having an axle extending from an axis of said disc brake;
(1) wherein said disk brake is connected to a stringing machine body and is rotably stationary relative to said stringing machine body;
(2) wherein said disk brake has a lip disposed laterally from said disk brake;
(3) wherein said disk brake is disposed in an internal cavity of said drum;
v) a lever disposed in said tensioner housing;
(1) wherein said lever has a first end and a second end, said first end having an aperture;
(2) wherein said axel of said disk brake is disposed through said aperture;
vi) a brake lever disposed in said tensioner housing;
(1) wherein said brake lever has a first end and a second end, said first end having a channel disposed laterally into said brake lever;
vii) wherein said lip of said disk brake is disposed within said channel of said brake lever.

13 more elements

Dependencies are inferred from the claim text.

Facts

Application

15/716,521Filed 27 Sep 2017

Priority

11 Nov 2013

Published

18 Jan 2018

Term ends

Not estimatedThe source records don’t support an estimate.

Classification4 codes

A63B 51/14
Stringing tennis, badminton or like rackets; Strings therefor; Maintenance of racket strings: arrangements for stringing, e.g. for controlling the…
A63B 51/143
Arrangements for stringing, e.g. for controlling the tension of the strings during stringing: hand-held string-tensioning devices
A63B 2210/50
Space saving: size reducing arrangements for stowing or transport
A63B
Apparatus for physical training, gymnastics, swimming, climbing, or fencing

Family

Application14/076,593Continuation in part · filed 11 Nov 2013

Application14/215,537Continuation in part · filed 17 Mar 2014

Application15/716,521Continuation in part

US 2015/0133243 A1Published application

US 2015/0258389 A1Published application

US 2018/0015335 A1This patent

From the US filing history. Foreign family members aren’t listed.

Self Locking Racket Stringing Machine Tensioner

Life of this patent

Self Locking Racket Stringing Machine Tensioner

Life of this patent

Abstract

Claims20