# US 2019/0244591 A1 · Strap length adjusting apparatus

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- Number: US 2019/0244591 A1
- Document ID: US20190244591A1
- Status: Published application
- Kind: A1
- Application number: 16/341,911
- Filed: 2017-09-10
- Published: 2019-08-08
- Earliest claimed: 2016-09-18
- Inventors: Jonathan Amos Bodnar; Dror Elkayam
- Web page: https://patentgrep.com/patent/US20190244591A1

## CPC

- G10G 5/005: {while playing, e.g. cord, strap or harness (rests or guards as part of the instruments, see the particular instruments, e.g. G10D3/18)}
- A44B 99/00: Subject matter not provided for in other groups of this subclass
- A45C 13/30: Straps; Bands
- A45F 5/004: {with an automatic spring reel}
- B65H 75/40: mobile or transportable
- B65H 75/4481: {Arrangements or adaptations for driving the reel or the material (by a spring B65H75/48)}
- A45F 2005/006: {comprising a suspension strap or lanyard}
- G10D 1/08: Guitars
- G10G: REPRESENTATION OF MUSIC; RECORDING MUSIC IN NOTATION FORM; ACCESSORIES FOR MUSIC OR MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR, e.g. SUPPORTS (music stands A47B; non-musical aspects of musical toy instruments A63H5/00; metronomes G04F5/02; teaching music G09B15/00)
- A44B: BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE (fastenings specially adapted for footwear A43C)
- A45C: PURSES; LUGGAGE; HAND CARRIED BAGS
- A45F: TRAVELLING OR CAMP EQUIPMENT: SACKS OR PACKS CARRIED ON THE BODY
- B65H: HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- G10D: STRINGED MUSICAL INSTRUMENTS; WIND MUSICAL INSTRUMENTS; ACCORDIONS OR CONCERTINAS; PERCUSSION MUSICAL INSTRUMENTS; AEOLIAN HARPS; SINGING-FLAME MUSICAL INSTRUMENTS; MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR (organs, harmoniums or similar wind musical instruments with associated blowing apparatus G10B; pianos, harpsichords, spinets or similar stringed musical instruments with one or more keyboards G10C; automatic musical instruments G10F; electrophonic musical instruments in which tones are generated by electromechanical means G10H)

## Abstract

A strap length adjusting apparatus includes first and second stationary plates and a middle plate disposed between them. The middle plate can rotate relative to the first and second stationary plates. A biasing device is linked to first and second coupling members between the middle plate and the first plate. The biasing device can either couple the middle plate to the first plate or decouple the middle plate from the first plate. When the first and middle plates are decoupled from each other, the middle plate can rotate with respect to the first plate, and a strap partially wound about a rod that extends from the middle plate, can wind about the rod either clockwise or counterclockwise so as to continuously change a length of the strap that extends away from the rod.

## Claims

### Claim 1

A strap length adjusting apparatus comprising:
a first stationary element;
a second stationary element;
a middle element positioned between said first and second elements, said middle element being rotatable with respect to said first and second elements;
first and second coupling members on said first stationary element and said middle element, respectively;
a biasing device linked to said first and second coupling members, said biasing device having a first operational position in which said first and second coupling members are coupled with each other such that said middle element cannot rotate with respect to said first stationary element, and said biasing device having a second operational position in which said first and second coupling members are decoupled from each other such that said middle element can rotate with respect to said first stationary element; and
a strap partially wound about a rod that extends from said middle element, wherein in said second operational position, said rod rotates with said middle element so that said strap winds about said rod either clockwise or counterclockwise so as to continuously change a length of said strap that extends away from said rod, and wherein in said first operational position, said rod cannot rotate with said middle element so that said strap cannot wind about said rod.

### Claim 2 (depends on 1)

The strap length adjusting apparatus according to claim 1, further comprising an object attached to said strap and to said second stationary element, wherein in said second operational position said biasing device is configured to counteract a weight of said object so that said object does not move downwards by gravitational force.

### Claim 3 (depends on 1)

The strap length adjusting apparatus according to claim 1, wherein said biasing device is coupled to a push button, wherein depressing said push button brings said biasing device from said first operational position to said second operational position.

### Claim 4

A method for adjusting a length of a strap comprising:
providing a first stationary element;
providing a second stationary element;
providing a middle element positioned between said first and second elements, said middle element being rotatable with respect to said first and second elements;
providing first and second coupling members on said first stationary element and said middle element, respectively;
providing a biasing device linked to said first and second coupling members;
providing a strap partially wound about a rod that extends from said middle element and
selectively placing said biasing device either in a first operational position in which said first and second coupling members are coupled with each other such that said middle element cannot rotate with respect to said first stationary element, or in a second operational position in which said first and second coupling members are decoupled from each other such that said middle element can rotate with respect to said first stationary element; and
wherein in said second operational position, said rod rotates with said middle element so that said strap winds about said rod either clockwise or counterclockwise so as to continuously change a length of said strap that extends away from said rod, and wherein in said first operational position, said rod cannot rotate with said middle element so that said strap cannot wind about said rod.

### Claim 5 (depends on 4)

The method according to claim 4, further comprising attaching an object to said strap and to said second stationary element, wherein in said second operational position said biasing device counteracts a weight of said object so that said object does not move downwards by gravitational force.

### Claim 6 (depends on 4)

The method according to claim 4, wherein said biasing device is coupled to a push button, wherein depressing said push button brings said biasing device from said first operational position to said second operational position.