US3900915A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary coiled broom
Assignee: Industrial Brush Corp
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Filing: 1974-07-23
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Granted: 1975-08-26
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Expires: 1994-07-23
Abstract
Abstract A street sweeping broom which is comprised of a rotary helical brush strip tightly secured about a rigid cylindrical core. The brush strip is of generally conventional construction and includes a plurality of reversely bent bristles with the bights thereof being maintained within a channel member by an anchoring wire and by the crimping of the channel member at spaced locations along the length thereof. Each of the ends of the helical brush strip is secured to a guide member which also supports the coil directly adjacent to the end of the brush strip. A ring having a plurality of circumferentially spaced slots is secured to each end of the core, and the guide members are attached to the rings by means of an inclined, inwardly projecting tang which allows movement of the guide member in only one rotational direction upon the ring. Thus, ratchet-type mechanisms are provided to secure each end of the brush strip to the core which mechanisms act to automatically take up any slack in the brush strip during the usage thereof in order to maintain it in tight engagement with the core.
Inventors
- 👤 Richard B Rosseau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:08
CPC Classifications
A; A46; A46B; A46B13/00; A46B13/001; A46B13/006
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
107 words
A rotary broom comprising a generally cylindrical core, a helical brush strip wound about said core, a ring member secured to one end of said core, said ring member having a series of stops spaced circumferentially thereabout, and automatic tightening means provided at the end of said brush strip adjacent to said ring member for engagement with said stops on said ring member, said tightening means and said stops being configured and oriented so as to permit endless relative rotary movement therebetween in one direction and to prevent relative rotary movement in the opposite direction when said tightening means is in engagement with one of said stops.
Claim 2
Dependent Claim
107 words
A rotary broom comprising a generally cylindrical core, a helical brush strip wound about said core, a ring member secured to one end of said core, said ring member having a series of stops spaced circumferentially thereabout, and automatic tightening means provided at the end of said brush strip adjacent to said ring member for engagement with said stops on said ring member, said tightening means and said stops being configured and oriented so as to permit endless relative rotary movement therebetween in one direction and to prevent relative rotary movement in the opposite direction when said tightening means is in engagement with one of said stops.
Claim 3
Dependent Claim
36 words
A rotary broom according to claim 1 wherein each end of said broom is provided with one of said ring members and wherein each end of said brush strip is provided with said automatic tightening means.
Claim 4
Dependent Claim
35 words
A rotary broom according claim 1 wherein said automatic tightening means comprises a guide member secured to said brush strip and having a projecting tang arranged to engage said stops on the associated ring member.
Claim 5
Dependent Claim
42 words
A rotary broom according to claim 3 wherein said ring member is provided with a track extending circumferentially about the periphery of said ring member and said guide member is provided with means for riding upon said track of the ring member.
Claim 6
Dependent Claim
59 words
A rotary broom according to claim 1 wherein said tightening means includes means for slidably supporting said brush strip at a position spaced one coil from said end of the strip in order to maintain said tightening means in engagement with said ring member and at least one coil of such brush strip at said end of said core.
Claim 7
Dependent Claim
47 words
A rotary broom according to claim 4 including a second guide member secured to said brush strip at a position spaced approximately one half coil from said end of the strip, said second guide member being arranged to be received upon said track of said ring member.
Claim 8
Dependent Claim
142 words
A rotary broom comprising a generally cylindrical core; a helical brush strip wound about said core; and automatic take-up means for maintaining said brush strip in tight engagement with said core including a ring member secured to one end of said core, said ring member having a series of recesses spaced circumferentially thereabout, and a guide member clamped to the end of said brush strip adjacent to said ring member, said guide member having a projecting tang and being arranged to slide upon said ring member with said tang being received in said recesses, the interengagement of said tang and said recesses permitting said guide member to rotate about said ring member in one direction but preventing relative rotational movement therebetween in the oppositE direction whereby any slack which accumulates in said brush strip will be removed by said automatic take-up means.
Claim 9
Dependent Claim
142 words
A rotary broom comprising a generally cylindrical core; a helical brush strip wound about said core; and automatic take-up means for maintaining said brush strip in tight engagement with said core including a ring member secured to one end of said core, said ring member having a series of recesses spaced circumferentially thereabout, and a guide member clamped to the end of said brush strip adjacent to said ring member, said guide member having a projecting tang and being arranged to slide upon said ring member with said tang being received in said recesses, the interengagement of said tang and said recesses permitting said guide member to rotate about said ring member in one direction but preventing relative rotational movement therebetween in the oppositE direction whereby any slack which accumulates in said brush strip will be removed by said automatic take-up means.
Claim 10
Dependent Claim
37 words
A rotary broom according to claim 7 wherein said ring member is provided with a radially outwardly extending flange, said guide member having a recessed portion arranged to be received upon said flange of the ring member.
Claim 11
Dependent Claim
63 words
A rotary broom according to claim 7 wherein said guide member is provided with means for slidably supporting said brush strip at a position spaced one coil from said end of the strip in order to maintain said guide member in slidable engagement with said ring member and at least one complete coil of said brush strip at said end of said core.
Claim 12
Dependent Claim
43 words
A rotary broom according to claim 7 including a second guide member secured to said brush strip at a position spaced approximately one half coil from said end of the strip, said second guide member being arranged to slidably engage said ring member.
Claim 13
Dependent Claim
76 words
A rotary broom according to claim 7 wherein said guide member comprises a generally U-shaped member with the arms thereof extending radially outwardly therefrom to receive said end of the brush strip and bent being bent over said brush strip to securely clamp the strip to the guide member, said tang projecting from the undersurface of said guide member, said guide member further including a laterally projecting ear arranged for sliding engagement with said ring member.
Claim 14
Dependent Claim
107 words
A helical brush strip for attachment to a generally cylindrical core of a rotary sweeper, said brush strip having a guide member securely attached to one end thereof, a ring member slidably attached to said guide member, said ring member being provided with a series of uniformly spaced stops extending circumferentially thereabout, means for securing said ring member to one end of said core, said guide member including means arranged to engage said stops on said ring member so as to permit endless relative movement of said guide member upon said ring member in one rotary direction but preventing relative movement therebetween in the opposite rotary direction.
Claim 15
Dependent Claim
107 words
A helical brush strip for attachment to a generally cylindrical core of a rotary sweeper, said brush strip having a guide member securely attached to one end thereof, a ring member slidably attached to said guide member, said ring member being provided with a series of uniformly spaced stops extending circumferentially thereabout, means for securing said ring member to one end of said core, said guide member including means arranged to engage said stops on said ring member so as to permit endless relative movement of said guide member upon said ring member in one rotary direction but preventing relative movement therebetween in the opposite rotary direction.
Claim 16
Dependent Claim
26 words
A helical brush strip according to claim 12 wherein each end thereof has attached thereto one of said guide members and one of said ring members.
Claim 17
Dependent Claim
37 words
A helical brush strip according to claim 12 wherein said guide member is provided with a laterally projecting arm slidably engaged with said brush strip at a position spaced one coil from said end of the strip.
Claim 18
Dependent Claim
43 words
A helical brush strip according to claim 14 including a second guide member secured to said strip at a position spaced approximately one half coil from said end of the strip, said second guide member having means for slidably engaging said ring member.
Claim 19
Dependent Claim
169 words
In a rotary broom which includes a generally cylindrical core, a helical brush strip wound about said core, means securing each end of said brush strip to one of the ends of said core, and automatic take-up means provided at at least one end of said core for permitting take-up of any slack which accumulates in said brush strip so that said brush strip will be maintained in tight engagement with said core, the improvement wherein said automatic take-up means comprises a ring member attached to said core at said one end thereof, said ring member being provided with a series of stops extending circumferentially thereabout, and a guide member secured to one end of the brush strip for riding engagement with said ring member, said guide member including means arranged to engage said stops on said ring member so as to permit endless relative movement of said guide member upon said ring member in one rotary direction but preventing relative rotary movement therebetween in the opposite rotary direction.
Claim 20
Dependent Claim
169 words
In a rotary broom which includes a generally cylindrical core, a helical brush strip wound about said core, means securing each end of said brush strip to one of the ends of said core, and automatic take-up means provided at at least one end of said core for permitting take-up of any slack which accumulates in said brush strip so that said brush strip will be maintained in tight engagement with said core, the improvement wherein said automatic take-up means comprises a ring member attached to said core at said one end thereof, said ring member being provided with a series of stops extending circumferentially thereabout, and a guide member secured to one end of the brush strip for riding engagement with said ring member, said guide member including means arranged to engage said stops on said ring member so as to permit endless relative movement of said guide member upon said ring member in one rotary direction but preventing relative rotary movement therebetween in the opposite rotary direction.
Claim 21
Dependent Claim
21 words
In a rotary broom according to claim 16 wherein each end of said core is provided with said automatic take-up means.
Claim 22
Dependent Claim
39 words
In a rotary broom according to claim 16 wherein said guide member is provided with a laterally extending arm slidably engaged with and underlying said brush striP at a position spaced one coil from said end of the strip.
Claim 23
Dependent Claim
123 words
A rotary broom comprising a generally cylindrical core, a helical brush strip wound about said core, a ring member at one end of said core, said ring member having a series of stops spaced circumferentially thereabout, means for securing said ring member to one of said core or said brush strip at the end thereof, and automatic tightening means secured to the other of said core or said brush strip for engagement with said stops on said ring member, said stops and said tightening means being configured and oriented so as to permit endless relative rotary movement therebetween in one direction and to prevent relative rotary movement in the opposite direction when said tightening means is in engagement with one of said stops.
Claim 24
Dependent Claim
123 words
A rotary broom comprising a generally cylindrical core, a helical brush strip wound about said core, a ring member at one end of said core, said ring member having a series of stops spaced circumferentially thereabout, means for securing said ring member to one of said core or said brush strip at the end thereof, and automatic tightening means secured to the other of said core or said brush strip for engagement with said stops on said ring member, said stops and said tightening means being configured and oriented so as to permit endless relative rotary movement therebetween in one direction and to prevent relative rotary movement in the opposite direction when said tightening means is in engagement with one of said stops.
Claim 25
Dependent Claim
102 words
A slack take-up device for maintaining a helically coiled brush strip in tight engagement with a generally cylindrical core, said take-up device being mounted at one end of said core and said brush strip, said take-up device comprising means for receiving and clamping the end of said brush strip, and guide means extending laterally from said last named means for slidably receiving said brush strip at a position spaced one coil length from said end of the strip whereby the end coil of said brush strip will always be maintained in a fixed position with respect to said end of said core.
Claim 26
Dependent Claim
102 words
A slack take-up device for maintaining a helically coiled brush strip in tight engagement with a generally cylindrical core, said take-up device being mounted at one end of said core and said brush strip, said take-up device comprising means for receiving and clamping the end of said brush strip, and guide means extending laterally from said last named means for slidably receiving said brush strip at a position spaced one coil length from said end of the strip whereby the end coil of said brush strip will always be maintained in a fixed position with respect to said end of said core.
Claim 27
Dependent Claim
23 words
A slack take-up device according to claim 20 wherein said guide means comprises a flange which is arranged to underlie said brush strip.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |